DHANALAKSHMI COLLEGE OF ENGINEERING MANIMANGALAM. TAMBARAM, CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING

Size: px
Start display at page:

Download "DHANALAKSHMI COLLEGE OF ENGINEERING MANIMANGALAM. TAMBARAM, CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING"

Transcription

1 DHANALAKSHMI COLLEGE OF ENGINEERING MANIMANGALAM. TAMBARAM, CHENNAI B.E. ELECTRICAL AND ELECTRONICS ENGINEERING V SEMESTER EE2305 ELECTRICAL MACHINES II LABORATORY LABORATORY MANUAL 1

2 CONTENT S. No. Name of the experiment Marks Signature 1 Regulation of a three phase alternator by EMF and MMF methods 2 Regulation of a three phase alternator by ZPF and ASA methods 3 Regulation of a three phase alternator by Slip test 4 Measurement of negative sequence and zero sequence impedance of alternators 5 V curves and inverted V curves of synchronous Motor 6 Load test on a three phase squirrel cage induction motor 7 No load and blocked rotor tests on a three phase induction motor 8 Load test on single phase Induction Motor 9 No load test and blocked rotor on single phase Induction Motor 2

4 O.C. TEST: 1. Using the 200 ohm potential divider, current in field circuit is increased in steps of 0.1A and at each step the alternator induced voltage indicated by voltmeter and the corresponding field current (I f ) are noted in tabular column. 2. This procedure is continued until the alternator voltage is 120% of its rated voltage. 3. After completing O.C. Test, the potential divider and motor field rheostat are brought to its minimum position. 4. After completing the experiment, calculate Synchronous Impedance, Synchronous Reactance & Regulation using the formulae given. 5. Using the data, Plot the graph between E o Vs I f. S.C. TEST: 1. The alternator terminals are short circuited by closing TPST switch through an ammeter. 2. The rated current is made to flow through the armature of the stator windings by carefully adjusting 220 ohms potential divider from the minimum position. 3. After completing the experiment, calculate the Load current, Field Current and Regulation. 4. Using the data, Plot the graph I sc vs I f and % Regulation vs Power Factor for both the EMF and MMF methods. CIRCUIT DIAGRAM: FUSE CALCULATION: MOTOR 4

5 ALTERNATOR TABULATION: O.C. TEST S.C TEST S. No. I f (A) V g(1-1) (V) V g (ph) (V) S.C TEST S. No. I f (A) I SC (A) FORMULAE USED: 1. Synchronous Impedance (ph),z S = (Open circuit voltage/phase) / (Short circuit current/phase) (For the same field current) 2. Synchronous Reactance (Ph), X S = [(Z S ) 2 -(R a ) 2 ] 1/2 EMF Method: E 0 ={(Vcos Φ +I a R a ) 2 +(VSin Φ)±I a X S ) 2 } 1/2 E 0 = Induced EMF per Phase, V=Rated voltage per phase, R a = Armature resistance in Ω, I a = Armature current in A; + for lagging p.f. load. - for leading p.f. load. E 0 V % Reg X100 V MMF Method: From the O.C.C. graph, find (1) I f1 - Field current required to produce rated voltage per phase. (2) I f2 - Field current required to produce rated current per phase during S.C. test. I f = {I f1 2 +I f2 2-2I f1 I f2 cos(90±φ)} 1/2 Where + for lagging p.f. load, - for leading p.f. load. 5

6 Now determine V o corresponding to I from graph. % Reg E 0 V X100 V EMF METHOD: S. No. P.F (lag) E o (V) Reg. (%) P.F (lead) E o (V) Reg. (%) MODEL CALCULATION: (EMF method) MODEL GRAPH: 6

7 MMF METHOD: S. No. P.F. (lag) I f (A) E 0 (V) Reg. (%) P.F. (lead) I f (A) Reg. (%) E 0 (V) MODEL CALCULATION: (MMF method) RESULT: REVIEW QUESTIONS: 1. Define Regulation 2. What is meant by pessimistic method? 3. Which method is called as optimistic method? 4. What are the advantages of EMF and MMF method? 5. List out the various methods used to predetermine the regulation. 7

9 O.C. TEST: 1. Using the 200 ohm potential divider, current in field circuit is increased in steps of 0.1A and at each step the alternator induced voltage indicated by voltmeter and the corresponding field current (I f ) are noted in tabular column. 2. This procedure is continued until the alternator voltage is 120% of its rated voltage. 3. After completing O.C. Test, the potential divider and motor field rheostat are brought to its minimum position. 4. After completing the experiment, calculate Synchronous Impedance, Synchronous Reactance & Regulation using the formulae given. 5. Using the data, Plot the graph between E o Vs I f. S.C. TEST: 1. The alternator terminals are short circuited by closing TPST switch through an ammeter. 2. The rated current is made to flow through the armature of the stator windings by carefully adjusting 220 ohms potential divider from the minimum position. 3. After completing the experiment, calculate the Load current, Field Current and Regulation. 4. Using the data, Plot the graph I sc vs I f and % Regulation vs Power Factor for both the EMF and MMF methods. CIRCUIT DIAGRAM: FUSE CALCULATION: MOTOR 9

10 ALTERNATOR TABULATION: O.C. TEST S.C TEST S. No. I f (A) V g(1-1) (V) V g (ph) (V) S.C TEST S. No. I f (A) I SC (A) FORMULAE USED: 1. Synchronous Impedance (ph),z S = (Open circuit voltage/phase) / (Short circuit current/phase) (For the same field current) 2. Synchronous Reactance (Ph), X S = [(Z S ) 2 -(R a ) 2 ] 1/2 PROCEDURE ZPF TEST 1. Connections are made as per the circuit diagram. 2. Close the D. P. S. T. switch. 3. Start the D. C. motor (prime mover) with the help of three point starter. 4. The field rheostat of the motor should be adjusted to bring the motor speed equivalent to the synchronous speed of the alternator. 5. Close the D. P. S. T. switch in the field circuit of the alternator. 6. The potential divider of the alternator field is varied till the ammeter in the alternator circuit reads rated current of the alternator. 7. Reduce the field current on the alternator side to zero value. 8. Reduce the speed by adjusting the motor field rheostat. 9. Open all the switches. 10

11 TABULAR COLOUMN ZPF test Sl. No Field current, I f (A) Voltage, E 0 (V) FORMULAE TO BE USED At Lagging power factor E 0 = (V cosφ + I a R a ) 2 + (V sinφ + IX L ) 2 Percentage Regulation = ((E 0 V) / V) 100 I f = I f1 2 + I f I f1 I f2 cos(180 (90 - ф)) Percentage regulation = ((E 0 V) / V) 100 POWER FACTOR PERCENTAGE VOTAGE REGULATION ZPF METHOD ASA METHOD 0.2 LAG UNITY LEAD RESULT The predetermination of percentage of voltage regulation of given alternator using ZPF and ASA methods were found. 11

13 PRECAUTION 1. All the switches should be kept open at the time of starting the experiment. 2. There should be no load at the time of starting the experiment. 3. The motor field rheostat should be kept at minimum resistance position. PROCEDURE 1. Connections are made as per the circuit diagram. 2. The D. P. S. T. switch should be closed. 3. The motor should be started with the help of three point starter. 4. The motor speed should be made equivalent to alternator synchronous speed with the help of field rheostat of the motor. 5. The auto transformer should be varied to get maximum variations in the meter. 6. All the readings should be noted down. TABULAR COLOUMN S. No. MAXIMUM VOLTAGE (V) MINIMUM VOLTAGE (V) MAXIMUM CURRENT (A) MINIMUM CURRENT (A) FORMULAE X d = (Maximum Voltage / 3 ) / Minimum current X q = (Minimum voltage / 3) / Maximum current d direct axis component q quadrature axis component RESULT The direct axis and quadrature axis component of the three phase alternator have been calculated. 13

14 MEASUREMENTS OF NEGATIVE SEQUENCE IMPEDANCE AND ZERO SEQUENCE IMPEDANCE OF ALTERNATORS AIM To obtain the negative sequence and zero sequence reactance of a given three phase alternator. APPARATUS REQUIRED S. No. Name of the apparatus Range Type Quantity 1 Voltmeter (0 300 V) M. I. 1 2 Voltmeter (0 150 V) M. I. 1 3 Ammeter (0 20 A) M. I. 1 4 Ammeter (0 10 A) M. I. 1 5 Ammeter (0 2 A) M. I. 1 6 Wattmeter 300 V, 10 A UPF 1 7 Rheostat 220 Ω, 2 A Single phase Auto Transformer (0 270 V) Tachometer ( rpm) Digital 1 NEGATIVE SEQUENCE PARAMETERS PRECAUTION 1. All the switches should be kept open at the time of starting the experiment. 2. The D. C. motor field rheostat should be kept at minimum resistance position at the time of starting the experiment. 3. The generator field potential divider should be kept at minimum potential position. PROCEDURE 1. Connections are made as per the circuit diagram. 2. The motor should be started with the help of three point starter. 3. The motor speed should be made equivalent to alternator synchronous speed with the help of field rheostat of the motor. 4. The D. P. S. T. switch on the alternator field side should be closed. 5. The alternator field potential divider must be varied in steps. 6. At each step, all the meter readings should be noted down. 7. The above procedure should be repeated till the ammeter reads the rated alternator current. 14

15 TABULAR COLOUMN NEGATIVE NEGATIVE S. No. VOLTAGE V RY (V) CURRENT I SC (A) POWER (W) SEQUENCE IMPEDANCE SEQUENCE REACTANCE AVERAGE (X 2 ) (Z 2 ) (X 2 ) FORMULAE Z 2 = V RY / (3 I SC ) X 2 = Z 2 (W 2 / (V RY I SC )) ZERO SEQUENCE PARAMETERS PRECAUTION 1. All the switches must be kept open at the time of starting the experiment. 2. The auto transformer should be kept at minimum potential position. PROCEDURE 1. Connections are made as per the circuit diagram. 2. The auto transformer should be varied in steps. 3. At each step the meter readings should be noted down. 4. The above procedure should be repeated till the ammeter reads rated current of the alternator. TABULAR COLOUMN S. No OBSERVATION VOLTAGE CURRENT (V) (A) CALCULATION X 0 = (3 V) / I AVERAGE X 0 15

16 RESULT Thus the negative sequence reactance and zero sequence reactance have been determined. 16

17 AIM: V AND INVERTED V CURVES OFTHREE PHASE SYNCHRONOUS MOTOR To draw V and inverted V curves for given three phase synchronous motor APPARATUS REQUIRED: S. No. Name of the apparatus Range Type Quantity 1 Voltmeter (0 600 V) M. I. 1 2 Ammeter (0 10 A) M. I. 1 3 Ammeter (0 2 A) M. C. 1 4 Wattmeter 600 V, 10 A UPF 1 5 Tachometer ( rpm) Digital 1 6 Three phase Auto Transformer (0 470 V) Rheostat 950 Ω, 0.8 A - 1 CIRCUIT DIAGRAM: 17

18 PRECAUTION 1. All the switches should be kept open at the time of starting the experiment. 2. The potential divider in the field circuit of synchronous motor should be kept at minimum potential position. PROCEDURE 1. Connections are made as per the circuit diagram. 2. Close the T. P. S. T. switch. 3. The auto transformer is varied gradually to start the motor. 4. The auto transformer is adjusted till the voltmeter reads the rated voltage of the synchronous motor. 5. Close the D. P. S. T. switch and increase the field current. 6. At no load condition, increase the field current in steps and note down the corresponding armature current. 7. The potential divider is brought to the minimum potential position. 8. Repeat the same procedure for different load conditions. 9. Reduce the load on the motor. 10. Reduce the field current to zero value. 11. Reduce voltage by varying auto transformer. 12. Open all the switches. TABULAR COLOUMN S. No. I a (A) I f (A) WATTMETER READING W 1 (W) W 2 (W) W 1 + W 2 (W) POWER FACTOR 18

19 GRAPH Field current, I f Vs Armature current, I a Field current, I f Vs Power factor, cosф RESULT Thus the V and inverted V curves of the given synchronous motor have been drawn. 19

20 LOAD TEST ON THREE PHASE INDUCTION MOTOR AIM: To conduct the direct load test on a given 3-phase induction motor and plot the performance characteristics of the machine. NAME PLATE DETAILS: Rated voltage = Rated power = Rated current = Frequency = Rated speed = APPARATUS REQUIRED: S. No. Apparatus Range & Type Quantity 1 3 Ф Induction Motor - 1 No. 2 3 Ф Autotransformer 415 V (0 470 V), 12.4 KVA 1 No. 3 Voltmeter AC (0-600 V), MI 1 No. 4 Ammeter AC (0-10 A), MI 1 No. 5 Wattmeter 600 V, 10 A, UPF ( Double Element) 1 No. 6 Tachometer, TPST Switch - 1 each 7 Connecting wires & fuse - As Required THEORY: Squirrel cage induction motors are so called because of the rotor construction, which is the most rugged construction. The rotor conductors are heavy bars of copper, Aluminium that are permanently shortcircuited. The rotor slots are given a slight skew for quieter operation and to prevent the locking tendency of the rotor. The direct load test is conducted on the squirrel cage induction motor to plot its performance characteristics under loading condition. This is more accurate than the predetermination techniques as the latter doesn t take into account the effect of factors such as temperature, which cause significant change in its operation. PRECAUTIONS: (Not to be included in the Record) 1. Remove the fuse carrier before starting wiring 2. Fuse rating calculation: Since this is load test, the required fuse rating is only 120% of the rated current of the motor 3. Before switching on the supply ensure the motor in on no load condition and the autotransformer is in the minimum position 4. Replace the fuse carriers with appropriate fuse wires after the circuit connections are checked by the staff in charge 20

21 PROCEDURE: 1. The connections are given as shown in circuit diagram. 2. The 3Ф ac supply is switched ON to the motor using the starter. 3. Under this load condition, one set of readings of the ammeter (I L ), voltmeter (V L ), wattmeter (W), spring balance and the speed (N) of motor are noted down. 4. Now the mechanical load on motor is increased in regular steps in such a way that the current drawn by the motor increases in steps of 1A. 5. At each step of loading, the entire meter readings are noted down in the tabular column. 6. This procedure is continued until the current drawn by the motor equals 120% of its rated value. 7. After the experiment is completed, the main supply is switched OFF. 8. After completing the experiment, Torque, Output Power, Power Factor, % Slip and % efficiency are calculated by using the given formulae. 9. Using the obtained data, the plot of % efficiency Vs Output power,.% Slip vs Output power, Speed vs Output power, power factor vs Output power, Line current vs Output power and Slip vs torque. CIRCUIT DIAGRAM: FUSE CALCULATION: 21

22 TABULAR COLUMN: S. No. Line voltage V L (V) Line current I L (A) Input power (W) Speed (RPM) Spring balance reading F 1 F 2 F 1 ~ F 2 (Kg) (Kg) (Kg) Torque (Nm) Output power (W) P.F % %Slip MODEL GRAPHS: 22

23 FORMULAE USED: 1. Torque = 9.81*R*(F 1 ~F 2 ) N-m R Radius of the brake drum including belt thickness. (m) F 1, F 2 spring balance readings in kg. 2. Output Power = 2πNT/60 W T Torque in N-m N Speed in rpm. 3. Power Factor = Input Power / 3 V L* I L Watt 4. % Efficiency = (Output/Input)* 100 % 5. % Slip = [(N s -N)/N s ]*100% MODEL CALCULATION: RESULT: REVIEW QUESTIONS: 1. What is Skewing? 2. What is cogging? 3. What is crawling? 4. Define Slip 23

24 AIM: NO LOAD AND BLOCKED ROTOR TESTS ON A THREE PHASE INDUCTION MOTOR To draw the equivalent circuit diagram of the given 3-phase squirrel-cage induction motor by conducting no load and blocked rotor tests. NAME PLATE DETAILS: Rated Voltage (volts) : Rated Speed (R.P.M) : Rated Current (Amps) : Frequency (Hz) : Rated Output (H.P.) : APPARATUS REQUIRED: S. No. Apparatus Type Range Quantity 1 3 Ф Induction Motor Set up No 2 Voltmeter AC MI 3 Ammeter AC MI 4 3 Auto transformer - (0-600 V) (0-150 V) (0-10 A) (0-2 A) kva/ 415 (0-470 V) 1 each 1 each 1 No 5 Double Element Wattmeter V,10 A 1 No 6 Wattmeter LPF 600 V, 10 A 2 No 7 Connecting wires - - As Required THEORY: This is a predetermination technique used to calculate the characteristics of the motor under difference load conditions without actually loading the machine. The disadvantages of direct load test are (i) Absence of loads of large magnitude (ii) Wastage of large amount of power during testing. The results obtained are accurate enough for practical purposes. Therefore we apply the predetermination techniques to obtain the load characteristics of the machine. From the losses obtained in these tests the equivalent circuit of three phase induction motor can be determined and drawn. PRECAUTIONS: (Not to be included in record) 1. Remove the fuse carriers before wiring and start wiring as per the circuit diagram. 2. Fuse Calculations: This being a load test, the required fuse ratings are 120% of rated current. 3. The auto transformer should be kept in minimum position. 4. Replace the fuse carrier with appropriate fuse wires after the circuit connections are checked by the staff-in-charge. 24

25 PROCEDURE: NO LOAD (OPEN CIRCUIT) TEST: 1. The circuit connections are given as per the circuit diagram. 2. With the autotransformer starter in minimum position, the supply is switched ON and the voltage is gradually increased to rated voltage as the motor picks up speed. 3. All the meter readings are noted down for this no-load condition. 4. If anyone of the wattmeter shows a negative deflection, then bring the autotransformer to the minimum position, switch off the supply and reverse the current coil connection. Then apply rated voltage and record this wattmeter reading as a negative power. 5. The autotransformer is brought back to its minimum position and the mains are switched OFF. BLOCKED ROTOR TEST: 1. The circuit connections are given as per the circuit diagram, 2. With the autotransformer starter in minimum position and the rotor in blocked position, the mains are switched ON. 3. By varying the autotransformer, the input voltage is gradually increased such that the ammeter reads rated current. 4. All the meter readings are noted down in this condition. 5. The autotransformer is brought back to its minimum position and the mains are switched OFF. CIRCUIT DIAGRAM: NO LOAD TEST: FUSE CALCULATION: 25

26 BLOCKED ROTOR TEST: FUSE CALCULATION: TABULATION: NO LOAD (OPEN CIRCUIT) TEST: Open circuit Voltage V oc (volts) No load Current I oc (amps) No load Power W oc W 1 W 2 W oc = W 1 + W 2 (watts) BLOCKED ROTOR (SHORT CIRCUIT) TEST: Short circuit Voltage V sc (volts) Short circuit Current I sc (amps) Short circuit Power W sc (watts) 26

27 FORMULAE USED: No load Impedance (Z 0 )= V oc / (I oc / 3) No load Resistance( R 0 )= W oc /I oc 2 No load Reactance( X 0 )= [( Z 0 ) 2 - (R 0 ) 2 ] Power factor angle ( 0 )= cos -1 [W oc / ( 3V oc I oc )] Block rotor resistance (R BR )= W sc / I sc 2 Block rotor impedance( Z BR )= V sc / (I sc / 3) Block rotor reactance ( X BR )= [Z BR 2 R BR 2 ] R iwf Resistance accounting for rotational losses R 1 = 1.2*stator winding resistance (dc) P r = W oc I oc 2 R 1 (Since P r = P 0 3(I oc / 3) 2 R 1 ) R iwf = V oc 2 / P r X m = Magnetic reactance I iwf = V oc / R iwf I m = (I oc 2 - I iwf 2 ) 1/2 X m = V oc / I m EQUIVALENT CIRCUIT: MODEL CALCULATIONS: RESULT: The No-load and blocked rotor test was conducted on the given three-phase induction motor & the equivalent circuit is drawn. REVIEW QUESTIONS: 1. Prove that three phase power can be measure using two watt meters. 2. What is the necessity to have starter for three phase induction motor? 3. How mechanical load is represented in the equivalent circuit of induction motor? 4. Define Synchronous Speed. 5. Why induction motors cannot run at synchronous speed? 27

28 AIM: LOAD TEST ON SINGLE PHASE INDUCTION MOTOR To draw load characteristics of a single phase induction motor by conducting the load test APPARATUS REQUIRED: S. No. Apparatus Range Type Quantity 1 Single phase induction motor Single phase auto transformer (0 270 V) 1 3 Voltmeter (0-300) V MI 1 4 Ammeter (0-10 ) A MI 1 5 Wattmeter 300 V, 10 A, UPF 1 6 Connecting wires - - As required THEORY: Constructional of this motor is more or less similar to a poly phase induction motor, except that its stator is provided with a single phase winding. A centrifugal switch is used in some type of motor in order to cut out a winding, used in some type of motor, in order to cut out a winding, used in some type of motors for starting squirrel cage rotor, when fed from a single phase only alternating one which alternates along one phase axis only. Now, alternating or pulsating flux acting on a stationary squired cage rotor cannot produce rotation that is why a single phase motor is not self starting. FORMULAE 1. Torque ( T )=S*9.81*R Nm 2. Output power (P o ) = 2πNT/60 watts 3. Efficiency (η) = Output power / Input power X 100 % 4. Slip S = (Ns Nr) / Ns * 100 % 5. Synchronous speed Ns = 120 f / P rpm 6. Power factor cos Φ = P in / (V L *I L ) where, R Radius of brake drum. V L Line Voltage 28

30 S. No 1 TABULAR COLUMN: Voltage V L (V) Current I L (A) Input Power P in (W) Spring Balance Reading S=S 1 S 2 S 1 (Kg) S 2 (Kg) (Kg) Circumference of the Brake drum = m. Speed N (rpm) Torque T (Nm) Output Power P o (W) Efficiency % SLIP S Power Factor Cos Φ Radius of Brake Drum Circumference = 2 π R = Radius = R=Circumference / (2 π) = meter MODEL CALCULATION 30

31 MODEL GRAPH RESULT: 31

32 NO LOAD AND BLOCKED ROTOR TESTS ON SINGLE PHASE INDUCTION MOTOR AIM To draw the equivalent circuit of the given three phase induction motor by conducting no load and blocked rotor test. APPARATUS REQUIRED S. No. Apparatus Range Type Quantity 1 Single phase induction motor Single phase auto transformer (0 270 V) 1 3 Voltmeter 4 Ammeter 5 Wattmeter (0-300) V (0-150) V (0-10) A (0-10) A 150 V, 5 A, LPF 300 V, 10 A, UPF MI 1 MI 1 1 each 6 Connecting wires - - As required CIRCUIT DIAGRAM NO LOAD TEST 32

34 TABULAR COLOUMN OPEN CIRCUIT TEST Sl. No. Voltage, Vo (V) Current, Io (A) Power, Wo (W) SHORT CIRCUIT TEST Sl. No. Voltage, V SC (V) Current, I SC (A) Power, W SC (W) FORMULAE W 0 = V 0 I 0 COS ф 0 COS ф 0 = W 0 / (V 0 I 0 ) I C = I 0 COS ф 0 I m = I 0 SIN ф 0 R 0 = V O / I C X 0 = V 0 / I m X 2 = X eq / 2 R 2 = R eq - R 1 R 0 = V 0 / (I 0 COS ф 0 ) X 0 = V 0 / (I 0 SIN ф 0 ) 2 R 01 = W SC / I SC X 01 = Z R 01 R 2 = R 01 (R m ll el R s ) X 2 = X 01 (X m ll el (X S - X L )) X S = Z 2 2 S R S X m = Z 2 2 m R m Z SC = V SC / I SC 2 R SC = W SC / I SC X SC = Z 2 2 SC R SC Slip = (N s - N r ) / N s R l 2 = R SC R 1 X l 2 = X 1 = X SC / 2 X m = 2 (X 0 X 1 (X l 2 / 2)) 34

35 RESULT Thus the equivalent circuit of single phase induction motor has been drawn using no load and blocked rotor tests. 35

Dev Bhoomi Institute Of Technology LABORATORY Department of Electrical And Electronics Engg. Electro-mechanical Energy Conversion II

REV. NO. : REV. DATE : PAGE: 1 Electro-mechanical Energy Conversion II 1. To perform no load and blocked rotor tests on a three phase squirrel cage induction motor and determine equivalent circuit. 2.

ELECTRICAL MACHINES-II LABORATORY MANUAL

ELECTRICAL MACHINES-II LABORATORY MANUAL T. ANIL KUMAR Associate Professor Department of Electrical and Electrical Engineering N. SINDHU Assistant Professor Department of Electrical and Electrical Engineering

SRM Institute of Science and Technology (Deemed to be University)

5EE0L-ELECTRICAL MACHINES LAB-II RECORD ACADEMIC YEAR: ODD SEMESTER 08-9 NAME : REG.NO. : DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING FACULTY OF ENGINEERING & TECHNOLOGY SRM Institute of Science

DHANALAKSHMI COLLEGE OF ENGINEERING Manimangalam, Tambaram, Chennai

DHANALAKSHMI COLLEGE OF ENGINEERING Manimangalam, Tambaram, Chennai 601 301 DEPARTMENT OF MECHANICAL ENGINEERING EE 8361- Electrical Engineering LABORATORY III SEMESTER - R 2017 LABORATORY MANUAL Name

EXPERIMENT CALIBRATION OF 1PHASE ENERGY METER

EXPERIMENT CALIBRATION OF PHASE ENERGY METER THEORY:- Energy Meters are integrating instruments used to measure the quantity of electrical energy supplied to a circuit in a given time. Single phase energy

ELECTRICAL AND ELECTRONICS LABORATROY MANUAL

ELECTRICAL AND ELECTRONICS LABORATROY MANUAL K CHAITANYA Assistant Professor Department of Electrical and Electrical Engineering A. NARESH KUMAR Assistant Professor Department of Electrical and Electrical

To expose the students to the operation of D.C. machines and transformers and give them experimental skill.

TOTAL: 45 PERIODS EE6411 ELECTRICAL MACHINES LABORATORY I L T P C 0 0 3 2 OBJECTIVES: To expose the students to the operation of D.C. machines and transformers and give them experimental skill. LIST OF

Electrical Machines -II

Objective Type Questions: 1. Basically induction machine was invented by (a) Thomas Alva Edison (b) Fleming (c) Nikola Tesla (d) Michel Faraday Electrical Machines -II 2. What will be the amplitude and

2014 ELECTRICAL TECHNOLOGY

SET - 1 II B. Tech I Semester Regular Examinations, March 2014 ELECTRICAL TECHNOLOGY (Com. to ECE, EIE, BME) Time: 3 hours Max. Marks: 75 Answer any FIVE Questions All Questions carry Equal Marks ~~~~~~~~~~~~~~~~~~~~~~~~~~

ELECTRICAL MAINTENANCE

ELECTRICAL MAINTENANCE II PRACTICAL JOURNAL DATA 1 EXPERIMENT NO. 1 AIM: TO FIND VOLTAGE RATIO OF A GIVEN TRANSFORMER. CIRCUIT DIAGRAM: OBSERVATION TABLE: Sr.No. 1 2 3 4 Primary Voltage (V 1 ) Secondary

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK 16EET41 SYNCHRONOUS AND INDUCTION MACHINES UNIT I SYNCHRONOUS GENERATOR 1. Why the stator core is laminated? 2. Define voltage regulation

Regulation: R16 Course & Branch: B.Tech EEE

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (Descriptive) Subject with Code : Electrical Machines-II (16EE215) Regulation: R16 Course & Branch: B.Tech

List of Experiments (Cycle-2)

List of Experiments (Cycle-) SL.No Experiment HOPKINSON S TEST RETARDATION TEST 3 SEPARATION OF LOSSES IN A SINGLE PHASE TRANSFORMER 4 SEPERATION OF LOSSES IN A DC SHUNT MACHINE 5 SUMPNER S TEST Experiment

Synchronous Generators I. EE 340 Spring 2011

Synchronous Generators I EE 340 Spring 2011 Construction of synchronous machines In a synchronous generator, a DC current is applied to the rotor winding producing a rotor magnetic field. The rotor is

Unit III-Three Phase Induction Motor:

INTRODUCTION Unit III-Three Phase Induction Motor: The three phase induction motor runs on three phase AC supply. It is an ac motor. The power is transferred by means of induction. So it is also called

Synchronous Generators I. Spring 2013

Synchronous Generators I Spring 2013 Construction of synchronous machines In a synchronous generator, a DC current is applied to the rotor winding producing a rotor magnetic field. The rotor is then turned

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (DESCRIPTIVE) Subject with Code : ET(16EE212) Year & Sem: II-B.Tech & II-Sem UNIT I DC GENERATORS Course

MUFFAKHAM JAH COLLEGE OF ENGINEERING & TECHNOLOGY EXPT.1: SCOTT CONNECTION OF TRANSFORMERS

EXPT.1: SCOTT CONNECTION OF TRANSFORMERS Page 1 AIM : To study the conversion of three phase supply to two phase supply by using scott connected transformers NAME PLATE DETAILS: EQUIPMENTS REQUIRED: SL.NO

SYLLABUS 1. SYNCHRONOUS GENERATOR 9 2. SYNCHRONOUS MOTOR 8

SYLLABUS 1. SYNCHRONOUS GENERATOR 9 Constructional details Types of rotors emf equation Synchronous reactance Armature reaction Voltage regulation EMF, MMF, ZPF and A.S.A methods Synchronizing and parallel

Electrical Machines-I (EE-241) For S.E (EE)

PRACTICAL WORK BOOK For Academic Session 2013 Electrical Machines-I (EE-241) For S.E (EE) Name: Roll Number: Class: Batch: Department : Semester/Term: NED University of Engineer ing & Technology Electrical

II/IV B.Tech(Regular) DEGREE EXAMINATION. Electronics & Instrumentation Engineering

SCHME OF EVALUTION II/IV B.Tech(Regular) DEGREE EXAMINATION JUNE,2016 EI ET 403 Electrical Technology Electronics & Instrumentation Engineering Max.Marks :60 marks -----------------------------------------------------------------------------------------------------------

Single Phase Induction Motor. Dr. Sanjay Jain Department Of EE/EX

Single Phase Induction Motor Dr. Sanjay Jain Department Of EE/EX Application :- The single-phase induction machine is the most frequently used motor for refrigerators, washing machines, clocks, drills,

GROUP OF INSTITUTIONS :: PUTTUR UNIT I SINGLE PHASE TRANSFORMERS

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (Descriptive) Subject with Code : Electrical Machines-II (16EE215) Course & Branch: B.Tech EEE Regulation:

DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING VI SEMESTER (NEW SCHEME)

DEPARTMENT OF ELECTRICAL & ELECTRONICS ENGINEERING VI SEMESTER (NEW SCHEME) 10EEL67 DC AND SYNCHRONOUS MACHINES LAB LABORATORY MANUAL NAM E OF THE STUDENT : BRANCH : UNIVERSITY SEAT NO. : SEMESTER & SECTION

ELECTRICAL MACHINES I

PRACTICAL WORK BOOK ELECTRICAL MACHINES I EX-404 Name: Enrollment No: Branch: Semester: Batch: Department of Electrical Engineering Name of Laboratory : Electrical Machine - I Lab Subject Code : Ex 404

DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1

It is the mark of an educated mind to be able to entertain a thought without accepting it. DEPARTMENT OF EI ELECTRICAL MACHINE ASSIGNMENT 1 1. Explain the Basic concepts of rotating machine. 2. With help

ST. ANNE S COLLEGE OF ENGINEERING AND TECHNOLOGY 9001:2015 CERTIFIED INSTITUTION) ANGUCHETTYPALAYAM, PANRUTI

ST. ANNE S COLLEGE OF ENGINEERING AND TECHNOLOGY (AN ISO 9001:2015 CERTIFIED INSTITUTION) ANGUCHETTYPALAYAM, PANRUTI 607 110. EE6504 ELECTRICAL MACHINES - II UNIT I SYNCHRONOUS GENERATOR PART A 1. What

2-marks question bank UNIT I - TRANSFORMERS UNIT II: AC MACHINES

2-marks question bank UNIT I - TRANSFORMERS 1. What is all day efficiency? 2. What are the applications of auto transformers? 3. Why transformer rating is expressed in KVA? 4. Does transformer draw any

Short questions and answers. EE1251 Electrical Machines II

Short questions and answers EE1251 Electrical Machines II 1. Why almost all large size Synchronous machines are constructed with rotating field system type? The following are the principal advantages of

R07 SET - 1

R07 SET - 1 II B. Tech II Semester Supplementary Examinations April/May 2013 ELECTRICAL MACHINES - II (Electrical and Electronics Engineering) Time: 3 hours Max. Marks: 80 Answer any FIVE Questions All

Dhanalakshmi College of Engineering

Dhanalakshmi College of Engineering Tambaram, Chennai 601 301 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING EE8311 - ELECTRICAL MACHINES LABORATORY - I III SEMESTER - R 2017 LABORATORY MANUAL Name

UNIT-I ALTERNATORS PART-A

UNIT-I ALTERNATORS 1. What principle is used in Alternators? 2. What are the requirements of an alternator? 3. Mention the types of alternator rotor. 4. What is hunting in alternators? 5. What are the

DC CIRCUITS ELECTROMAGNETISM

DC CIRCUITS 1. State and Explain Ohm s Law. Write in brief about the limitations of Ohm s Law. 2. State and explain Kirchhoff s laws. 3. Write in brief about disadvantages of series circuit and advantages

ESO 210 Introduction to Electrical Engineering

ESO 210 Introduction to Electrical Engineering Lectures-37 Polyphase (3-phase) Induction Motor 2 Determination of Induction Machine Parameters Three tests are needed to determine the parameters in an induction

694 Electric Machines

694 Electric Machines 9.1 A 4-pole wound-rotor induction motor is used as a frequency changer. The stator is connected to a 50 Hz, 3-phase supply. The load is connected to the rotor slip rings. What are

2. Draw the speed-torque characteristics of dc shunt motor and series motor. (May2013) (May 2014)

UNIT 2 - DRIVE MOTOR CHARACTERISTICS PART A 1. What is meant by mechanical characteristics? A curve is drawn between speed-torque. This characteristic is called mechanical characteristics. 2. Draw the

Starting of Induction Motors

1- Star Delta Starter The method achieved low starting current by first connecting the stator winding in star configuration, and then after the motor reaches a certain speed, throw switch changes the winding

EE6351 ELECTRIC DRIVES AND CONTROL UNIT-1 INTRODUTION

EE6351 ELECTRIC DRIVES AND CONTROL UNIT-1 INTRODUTION 1. What is meant by drive and electric drive? Machines employed for motion control are called drives and may employ any one of the prime movers for

VALLIAMMAI ENGINEERING COLLEGE

VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur 603 203. DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING Question Bank EE6401 ELECTRICAL MACHINES I UNIT I: MAGNETIC CIRCUITS AND MAGNETIC

AC MOTOR TYPES. DESCRIBE how torque is produced in a single-phase AC motor. EXPLAIN why an AC synchronous motor does not have starting torque.

Various types of AC motors are used for specific applications. By matching the type of motor to the appropriate application, increased equipment performance can be obtained. EO 1.5 EO 1.6 EO 1.7 EO 1.8

SPEED CONTROL OF DC SHUNT MOTOR

INDEX NO. : M-140 TECHNICAL MANUAL FOR SPEED CONTROL OF DC SHUNT MOTOR Manufactured by : PREMIER TRADING CORPORATION (An ISO 9001:2000 Certified Company) 212/1, Mansarover Civil Lines, MEERUT. Phone :

Stator rheostat, Autotransformer Star to Delta starter and rotor resistance starter.

UNIT-IV 1.What are the types of starters? Stator rheostat, Autotransformer Star to Delta starter and rotor resistance starter. 2. List out the methods of speed control of cage type 3-phase induction motor?

Part- A Objective Questions (10X1=10 Marks)

Dr. Mahalingam College of Engineering and Technology, Pollachi-3 (An Autonomous Institution) CCET 3(2016Regulation) Name of Programme: B.E. (EEE) Course Code&Course Title: 16EET41 & Synchronous & Induction

UNIT I SYNCHRONOUS GENERATOR PART-A

1. What is an alternator? UNIT I SYNCHRONOUS GENERATOR PART-A An alternator or AC generator is a synchronous machine which converts mechanical energy into electrical energy and produces alternating emf.

Unit-II Synchronous Motor

Unit-II Synchronous Motor CONSTRUCTION OF THREE PHASE SYNCHRONOUS MOTOR PRINCIPLE OF OPERATION Prepared By P.Priyadharshini Ap/EEE - 1 - Note: 1. The average torque exerted on the rotor of synchronous

EMEC 1 LAB Laboratory Manual

DEV BHOOMI INSTITUTE OF TECHNOLOGY CHAKRATA ROAD,NAVGAOUN MANDUWALA,UTTARAKHAND Programs: B.TECH. (Electrical and Electronics Engineering) EMEC 1 LAB Laboratory Manual PREPARED BY Saurabh Rajvanshi ASST.PROFESSOR,

APGENCO/APTRANSCO Assistant Engineer Electrical Previous Question Papers Q.1 The two windings of a transformer is conductively linked. inductively linked. not linked at all. electrically linked. Q.2 A

AE105 PRINCIPLES OF ELECTRICAL ENGINEERING JUNE 2014

Q.2 a. Explain in detail eddy current losses in a magnetic material. Explain the factors on which it depends. How it can be reduced? IETE 1 b. A magnetic circuit with a single air gap is shown in given

Contents. Review of Electric Circuitd. Preface ;

Preface ; Chapter 1 Review of Electric Circuitd 1.1 Introduction, 1 1.2 Direct Circuit Current, 1 1.2.1 Voltage, 3 1.2.2 Power, 3 1.2.3 Ohm's Law, 5 1.2.4 KirchhofTs Laws, 5 1.2.4.1 Kirchhoff s Current

ST.ANNE S COLLEGE OF ENGINEERING AND TECHNOLOGY ANGUCHETTYPALAYAM, PANRUTI

ST.ANNE S COLLEGE OF ENGINEERING AND TECHNOLOGY ANGUCHETTYPALAYAM, PANRUTI 607106. QUESTION BANK DECEMBER 2017 - JUNE 2018 / EVEN SEMESTER BRANCH: EEE YR/SEM: II/IV BATCH: 2016-2020 SUB CODE/NAME: EE6401

Scheme - I. Sample Question Paper

Program Name Program Code Course Title Sample Question Paper : Diploma in Industrial Electronics : IE : Electrical Machines and Transformers Max. Marks : 70 Time : 3 Hrs. Q1. ATTEMPT ANY FIVE OF THE FOLLOWING.

LENDI INSTITUTE OF ENGINEERING AND TECHNOLOGY

LENDI INSTITUTE OF ENGINEERING AND TECHNOLOGY (Approved by A.I.C.T.E & Affiliated to JNTUK,Kakinada) Jonnada, Denkada (M), Vizianagaram Dist 535 005 Phone No. 08922-241111, 241666 E-Mail: lendi_2008@yahoo.com

VALLIAMMAI ENGINEERING COLLEGE MECHANICAL ENGINEERING ANNA UNIVERSITY CHENNAI II YEAR MECH / III SEMESTER EE6351 - ELECTRICAL DRIVES AND CONTROL (REGULATION 2013) UNIT I INTRODUCTION PART-A (2 MARKS) 1.

Sub:EE6604/DESIGN OF ELECTRICAL MACHINES Unit V SYNCHRONOUS MACHINES. 2. What are the two type of poles used in salient pole machines?

SRI VIDYA COLLEGE OF ENGINEERING & TECHNOLOGY DEPARTMENT OF EEEE QUESTION BANK Sub:EE6604/DESIGN OF ELECTRICAL MACHINES Unit V SYNCHRONOUS MACHINES 1. Name the two types of synchronous machines. 1. Salient

SRI VIDYA COLLEGE OF ENGINEERING & TECHNOLOGY QUESTION BANK UNIT III EC6352-ELECTRICAL ENGINEERING AND INSTRUMENTATION UNIT III PART A

SRI VIDYA COLLEGE OF ENGINEERING & TECHNOLOGY QUESTION BANK UNIT III EC6352-ELECTRICAL ENGINEERING AND INSTRUMENTATION UNIT III PART A INDUCTION MOTORS 1. What are the 2 types of 3phase induction motor?

INDUCTION MOTORS 1. OBJECTIVE 2. SAFETY

INDUCTION MOTORS 1. OBJECTIE To study a 3-phase induction motor, by using its experimentally developed equivalent circuit diagram and by obtaining its basic characteristics: torque/slip, current/slip and

Electrical Machines II. Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit

Electrical Machines II Week 5-6: Induction Motor Construction, theory of operation, rotating magnetic field and equivalent circuit Asynchronous (Induction) Motor: industrial construction Two types of induction

St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad

St.MARTIN S ENGINEERING COLLEGE Dhulapally, Secunderabad-500 014 Subject: STATIC DRIVES Class : EEE III TUTORIAL QUESTION BANK Group I QUESTION BANK ON SHORT ANSWER QUESTION UNIT-I 1 What is meant by electrical

R13 SET - 1. b) Describe different braking methods employed for electrical motors. [8M]

Code No:RT32026 R13 SET - 1 III B. Tech II Semester Regular Examinations, April - 2016 POWER SEMICONDUCTOR DRIVES (Electrical and Electronics Engineering) Time: 3 hours Maximum Marks: 70 Note: 1. Question

Sharjah Indian School Sharjah Boys Wing

Read the instructions given below carefully before writing the fair record book. The following details are to be written on the LEFT HAND SIDE of the book. CIRCUIT DIAGRAM CALCULATIONS The remaining details

(d) None of the above.

Dr. Mahalingam College of Engineering and Technology, Pollachi-3 (An Autonomous Institution affiliated to Anna niversity) CCET II (2016 Regulation) Name of Programme: B.E. (EEE) Course Code & Course Title:

10. Starting Method for Induction Motors

10. Starting Method for Induction Motors A 3-phase induction motor is theoretically self starting. The stator of an induction motor consists of 3-phase windings, which when connected to a 3-phase supply

SYNCHRONOUS GENERATOR (ALTERNATOR)

i SYLLABUS osmania university UNIT - I SYNCHRONOUS MACHINES Constructional Details, Types of Windings, Winding Factors, EMF Equation, Fractional Pitch and Fractional Slot Windings, Suppression of Harmonics

The Wound-Rotor Induction Motor Part I

Experiment 1 The Wound-Rotor Induction Motor Part I OBJECTIVE To examine the construction of the three-phase wound-rotor induction motor. To understand exciting current, synchronous speed and slip in a

DHANALAKSHMI SRINIVASAN INSTITUTE OF RESEARCH AND TECHNOLOGY SIRUVACHUR

DHANALAKSHMI SRINIVASAN INSTITUTE OF RESEARCH AND TECHNOLOGY SIRUVACHUR 621 113. DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK (PART B) YEAR/SEMESTER :III/V SUB CODE/SUB NAME : EE2302/ELECTRICAL

DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY MAMALLAPURAM, CHENNAI

DHANALAKSHMI SRINIVASAN COLLEGE OF ENGINEERING AND TECHNOLOGY MAMALLAPURAM, CHENNAI -603104 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING QUESTION BANK VII SEMESTER EE6501-Power system Analysis

INSTITUTE OF AERONAUTICAL ENGINEERING Dundigal, Hyderabad

INSTITUTE OF AERONAUTICAL ENGINEERING Dundigal, Hyderabad - 500 043 MECHANICAL ENGINEERING ASSIGNMENT Name : Electrical and Electronics Engineering Code : A40203 Class : II B. Tech I Semester Branch :

EEE3441 Electrical Machines Department of Electrical Engineering. Lecture. Introduction to Electrical Machines

Department of Electrical Engineering Lecture Introduction to Electrical Machines 1 In this Lecture Induction motors and synchronous machines are introduced Production of rotating magnetic field Three-phase

EKT112 Principles of Measurement and Instrumentation. Power Measurement

EKT112 Principles of Measurement and Instrumentation Power Measurement 1 Outline Power? Power in DC and AC Circuits Power Measurements Power Instrumentation (Wattmeter) 2 Concept of Electric POWER Power

Study and Measure the Active and Reactive Power Developed By a Three Phase Induction Generator with Capacitive Load

International Journal of Engineering and Technical Research (IJETR) Study and Measure the Active and Reactive Power Developed By a Three Phase Induction Generator with Capacitive Load Surajit Mondal, Oisik

CHAPTER 4 HARDWARE DEVELOPMENT OF DUAL ROTOR RADIAL FLUX PERMANENT MAGNET GENERATOR FOR STAND-ALONE WIND ENERGY SYSTEMS

66 CHAPTER 4 HARDWARE DEVELOPMENT OF DUAL ROTOR RADIAL FLUX PERMANENT MAGNET GENERATOR FOR STAND-ALONE WIND ENERGY SYSTEMS 4.1 INTRODUCTION In this chapter, the prototype hardware development of proposed

EXPERIMENT 19. Starting and Synchronizing Synchronous Machines PURPOSE: BRIEFING: To discover the method of starting synchronous motors.

EXPERIMENT 19 Starting and Synchronizing Synchronous Machines PURPOSE: To discover the method of starting synchronous motors. BRIEFING: When three-phase is applied to the stator of a three-phase motor,

Performance Analysis of Dual Stator Induction Motor

Performance Analysis of Dual Stator Induction Motor Prof. Anagha R. Soman 1, Sachin Madaan 2, Shubh Gupta 3, Abhishek Singh 4, Virendra Yadav 5, Ankit Tiwari 6 1Professor,Dept. of Electrical Engineering,

Induction machine characteristics and operation. Induction Machines

Induction Machines 1.1 Introduction: An essential feature of the operation of the synchronous machine is that the rotor runs at the same speed as the rotating magnetic field produced by the stator winding.

Instructor. Payam Zarbakhsh. Department of electrical electronics engineering

Instructor Payam Zarbakhsh Department of electrical electronics engineering Electrical Machines Induction Motors_Note(1) Comparing with synchronous motor No dc field current is required to run the machine.

Single Phase Induction Motors

Single Phase Induction Motors Prof. T. H. Panchal Asst. Professor Department of Electrical Engineering Institute of Technology Nirma University, Ahmedabad Introduction As the name suggests, these motors

Date: Name: ID: LABORATORY EXPERIMENT NO. 8 INDUCTION MOTOR/GENERATOR 8-1

Date: Name: ID: LABORATORY EXPERIMENT NO. 8 INDUCTION MOTOR/GENERATOR 8-1 OBJECT 1. To determine the general performance of a squirrel motors 2. To observe the characteristics of induction generators.

Department of Electrical and Computer Engineering

Page 1 of 1 Faculty of Engineering, Architecture and Science Department of Electrical and Computer Engineering Course Number EES 612 Course Title Electrical Machines and Actuators Semester/Year Instructor

Lecture 20: Stator Control - Stator Voltage and Frequency Control

Lecture 20: Stator Control - Stator Voltage and Frequency Control Speed Control from Stator Side 1. V / f control or frequency control - Whenever three phase supply is given to three phase induction motor

To discover the factors affecting the direction of rotation and speed of three-phase motors.

EXPERIMENT 12 Direction of Rotation of Three-Phase Motor PURPOSE: To discover the factors affecting the direction of rotation and speed of three-phase motors. BRIEFING: The stators of three-phase motors

Institute of Technology, Nirma University B. Tech. Sem. V: Electrical Engineering 2EE305: ELECTRICAL MACHINES II. Handout: AC Commutator Motors

Institute of Technology, Nirma University B. Tech. Sem. V: Electrical Engineering 2EE305: ELECTRICAL MACHINES II Handout: AC Commutator Motors Prepared by: Prof. T. H. Panchal Learning Objective: Introduction

DHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ME 6351 ELECTRICAL DRIVES AND CONTROL UNIVERSITY QUESTIONS AND ANSWERS

DHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF MECHANICAL ENGINEERING ME 6351 ELECTRICAL DRIVES AND CONTROL UNIVERSITY QUESTIONS AND ANSWERS 1) What is the Necessity of starter? UNIT 3 Two Marks Both

UNIT III. AC Machines

SIDDHARTH GROUP OF INSTITUTIONS :: PUTTUR Siddharth Nagar, Narayanavanam Road 517583 QUESTION BANK (DESCRIPTIVE) Subject with Code : (15A01301) Year & Sem: II-B.Tech & I-Sem UNIT III Course & Branch: B.Tech-CE

ROEVER COLLEGE OF ENGINEERING & TECHNOLOGY Elambalur- Perambalur DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

ROEER COLLEGE OF ENGINEERING & TECHNOLOGY Elambalur- Perambalur-621212 DEPRTMENT OF ELECTRICL ND ELECTRONIC ENGINEERING ELECTRICL MCHINE LBORTORY 1 Laboratory Observation Book ersion - 01 Name: Register

Measurement of induction motor characteristics

Measurement of induction motor characteristics ES163 Electrical and Electronic Systems MR TJ KENNAUGH School of Engineering, University of Warwick 27/01/01 Summary The aim of the laboratory is to increase

VIII. Three-phase Induction Machines (Asynchronous Machines) Induction Machines

VIII. Three-phase Induction Machines (Asynchronous Machines) Induction Machines 1 Introduction Three-phase induction motors are the most common and frequently encountered machines in industry simple design,

ELEN 236 DC Motors 1 DC Motors

ELEN 236 DC Motors 1 DC Motors Pictures source: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/mothow.html#c1 1 2 3 Some DC Motor Terms: 1. rotor: The movable part of the DC motor 2. armature: The

INDIAN MARITIME UNIVERSITY KOLKATA CAMPUS

INDIAN MARITIME UNIVERSITY KOLKATA CAMPUS No. IMU-KC/Laboratory Equipment/16-17 Date: 17.02.2017 Sub: Quotation for procurement of Instruments for Electrical Machine Laboratory at IMU-Kolkata Campus Sealed

EXPERIMENT 2 THREE PHASE INDUCTION MOTOR, PART 1

University f Jordan School of Engineering Department of Mechatronics Engineering Electrical Machines Lab Eng. Osama Fuad Eng. Nazmi Ashour EXPERIMENT 2 THREE PHASE INDUCTION MOTOR, PART 1 OBJECTIVES To

ECE 325 Electric Energy System Components 6 Three Phase Induction Motors. Instructor: Kai Sun Fall 2016

ECE 325 Electric Energy System Components 6 Three Phase Induction Motors Instructor: Kai Sun Fall 2016 1 Content (Materials are from Chapters 13-15) Components and basic principles Selection and application

INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING

Course Name Course Code Class Branch INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad - 500 0 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING : Static Drives : A60225 : III -

Practical Manual Lab: Electrical Technology

Practical Manual Lab: Electrical Technology 1 st yr (CSE/EE/ME/CV/ECE) Electronics &Communication Engg. (ECE) RAO PAHALD SINGH GROUP OF INSTITUTIONS BALANA(MOHINDER GARH)123029 Prepared By. Mr.NAVEEN CHAUHAN

Syllabus for the Trade of Electrician Duration : Six Month Second Semester Semester Code: ELE: SEM II

Syllabus for the Trade of Electrician Duration : Six Month Second Semester Semester Code: ELE: SEM II Week Trade practical No. 1-2 Different wave shapes of rectifiers and their values using C.R.O. Identification

Lab Electrical Power Engineering I

INSTITUT FÜR ELEKTRISCHE MASCHINEN RHEINISCH-WESTFÄLISCHE TECHNISCHE HOCHSCHULE AACHEN Lab Electrical Power Engineering I Test 3: Induction machine with squirrel cage rotor and slip ring rotor 1 Experiment

Department of Electrical and Electronics Engineering. II year - III semester ECE Electrical Engineering. 2-Marks Question Bank & University Qn/Ans

Department of Electrical and Electronics Engineering II year - III semester ECE Electrical Engineering 2-Marks Question Bank & University Qn/Ans Prepared by Thenmozhi.N, AP/EEE EC 2201 ELECTRICAL ENGINEERING

ROTOR RESISTANCE SPEED CONTROL OF WOUND ROTOR INDUCTION MOTOR

1 Electrical Machines Lab Experiment-No. ROTOR RESISTANCE SPEED CONTROL OF WOUND ROTOR INDUCTION MOTOR AIM: To vary the speed of the wound rotor induction motor using rotor rheostat control. Theory The

Load Test On 3 Phase Slip Ring Induction Motor Lab Manual

Load Test On 3 Phase Slip Ring Induction Motor Lab Manual Electrical engineering machine lab manual. Brake test on three phase squirrel cage induction motor. No-load &, blocked rotor tests on three phase

Pretest Module 21 Units 1-4 AC Generators & Three-Phase Motors

Pretest Module 21 Units 1-4 AC Generators & Three-Phase Motors 1. What are the two main parts of a three-phase motor? Stator and Rotor 2. Which part of a three-phase squirrel-cage induction motor is a