Course Title: Electrical Estimation and Costing. TH TU PR Total TH TS PR OR TW Total *(E)

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1 Programme Code: Electrical Engineering Course Code: EE Compulsory / Optional: Compulsory Teaching Scheme and Credits Course Title: Electrical Estimation and Costing Examination Scheme TH TU PR Total TH TS PR OR TW Total *(E) Rationale: This subject is considered for the award of class. Electrical Diploma holders have to work as Technicians & Supervisors for Electrical Installations of various companies, commercial and Industrial electrification schemes and prepare estimates for these schemes. They also work as Independent electrical contractors and execute illumination and electrification schemes. This subject will help them to prepare detailed estimates. Objectives: The students will be able to - Define different types of Electrical Installation. - Interpret the Electrical Engineering Drawing. - Understand illumination scheme design. - State and describe the basic terms, general rules, circuit design procedure, wiring design and design considerations of Residential Electrical Installations. - Prepare detail estimate and costing of Residential, Commercial and Industrial Electrical Installations. Section I 1 Drawing and IE rules: 1.1 Classification of Electrical Installation. 1.2 General requirement of Electrical installation. 1.3 Reading and Interpretation of Electrical Engineering Drawings. 1.4 Various diagrams, plans and layout. 1.5 Important definitions related to Installation. 1.6 IE rules related to Electrical Installation & Testing Service Connection: 2.1 Concept of service connection. 2.2 Types of service connection & their features. 2.3 Methods of Installation of service connection. 2.4 Estimates of underground & overhead service connections Design of illumination scheme: 3.1 Terms related to illumination. 3.2 Laws of illumination. 3.3 Types of light sources EE Electrical Estimation and Costing 1

2 3.4 Types of lighting arrangements. 3.5 Design considerations of good lighting scheme. 3.6 Design of illumination for residential, commercial unit. 3.7 Street lighting. 3.8 Yard lighting. 4 Residential Building Electrification: 4.1 General rules guidelines for wiring of Residential Installation and positioning of equipment. 4.2 Principles of circuit design in lighting and power circuits. 4.3 Procedures for designing the circuits and deciding the number of circuits. 4.4 Method of drawing single line diagram. 4.5 Selection of type of wiring and rating of wires & cables. 4.6 Load calculations and selection of size of conductor. 4.7 Selection of rating of main switch, distributions board, protective switchgear ELCB and MCB and wiring accessories. 4.8 Earthing of Residential Installation. 4.9 Sequence to be followed for preparing Estimate Preparation of detailed estimates and costing of Residential Installation. ( Simple Numericals ) Section II 5 Electrification of commercial Installation: 5.1 Concept of commercial Installation. 5.2 Differentiate between electrification of Residential and commercial Installation. 5.3 Fundamental considerations for planning of an electrical Installation system for commercial building. 5.4 Design considerations of electrical Installation system for commercial building. 5.5 Load calculations & selection of size of service connection and nature of supply. 5.6 Deciding the size of cables, busbar and busbar chambers. 5.7 Mounting arrangements and positioning of Switchboards, distribution boards main switch etc. 5.8 Earthing of the electrical Installation 5.9 Selection of type wire, wiring system & layout Sequence to be followed to prepare estimate Preparation of detailed estimate and costing of commercial Installation. ( Simple Numericals ) 6 Electrification of factory unit Installation: 6.1 Concept of Industrial load. 6.2 Concept of Motor wiring circuit and single line diagram. 6.3 Important guidelines about power wiring and Motor wiring. 6.4 Design consideration of Electrical Installation in small EE Electrical Estimation and Costing 2

3 Industry/Factory/workshop. 6.5 Motor current calculations. 6.6 Selection and rating of wire, cable size & conduct. 6.7 Deciding fuse rating, starter, distribution boards main switch etc. 6.8 Deciding the cable route, determination of length of wire, cable, conduit, earth wire, and earthing. 6.9 Factors involved in designing the machine foundation, Requirement of different dimension of foundation for static & rotating machines procedure for leveling & alignment of two shafts of directly & indirectly coupled drives, effects of misalignment. Installation of rotating machines as per I.S Sequence to be followed to prepare estimate Preparations of detailed estimate and costing of small factory unit/ workshop. ( Simple Numericals ) 7 Contracts, Tenders and Execution: 7.1 Concept of contracts and Tenders. 7.2 Contracts, types of contracts, contractors. 7.3 Valid Contracts, Contract documents. 7.4 Tender and tender notices. 7.5 Procedure for submission and opening tenders. 7.6 Comparative statements, criteria for selecting contractors, General conditions in order form. 7.7 Principles of Execution of works. 7.8 Administrative approval, Technical sanctions. 7.9 Billing of executed work List of Practical: 1. To draw service connections and estimate the material. 2. To design illumination scheme for a class room / drawing hall with estimate and costing. 3. To design illumination scheme for street lighting with estimate and costing. 4. To design illumination scheme using Illumination design software. 5. To design electrical installation scheme for single residential unit with detailed estimate and its costing. 6. To design electrical installation scheme for commercial unit with detailed estimate and its costing. 7. To design electrical installation scheme for small factory unit. Draw single line layout and prepare detailed estimate and its costing. 8. To prepare tender document for electrical installation work. Reference Books: 1. Electrical design, estimation and costing by K.B.Raina and S.K. Bhattacharya, Publisher: New Age International, Mumbai. 2. Electrical estimating and costing by Surjit Singh, Publisher: Dhanpatrai and Co.Delhi. 3. Electrical Estimating and Costing by N. Alagappan and S. Ekambaram, Publisher: Tata McGraw Hill, New Delhi. 4. Electrical Engineering Drawing by C.R.Dargan, Publisher Computech Publications Ltd. EE Electrical Estimation and Costing 3

4 Programme Code: Electrical Engineering Course Code: EE Compulsory / Optional: Compulsory Teaching Scheme and Credits Course Title: Power Electronics and Drives Examination Scheme TH TU PR Total TH TS PR OR TW Total (Ext) *This subject is considered for the award of class. Rationale: The field of electrical engineering is generally segmented into three major areas Electronics, Power & Control. Power electronics involves a combination of these three areas. In broad terms, the function of power electronics is to process &control the electrical energy by supplying voltage and current in a form that is optimally suited to the load. Now a day s electrical machine are controlled by Power Electronic devices. Also the various conventional control & relay are replaced by electronic control & relays, employing solid state power semiconductor devices. Hence, for electrical engineering Students it is desirable to study the course dealing with Power Electronics. Objectives: The students will be able to - explain the construction and operation of power semiconductor devices and plot their characteristics. - draw the circuit diagrams and explain the working of controlled rectifiers with appropriate waveforms. - draw the circuit diagrams and explain the working of different types of Inverters with appropriate waveforms. - explain the Voltage and Frequency Control Methods used in Inverters. - draw the circuit diagrams and explain the working of different types of choppers with appropriate waveforms. - apply the power electronic methods of controls in Electrical Engineering field. Section I 01 - Power devices: 1.1 Introduction to thyristors. 1.2 Symbol, Construction, Operation,V-I characteristic and working of SCR, two transistor analogy of SCR. 1.3 Symbol Construction, Operation, V-I characteristic and working of DIAC, TRIAC, UJT, LASCR. 1.4 Definition of Holding & Latching Current, Forward & Reverse Break over Voltages. 1.5 Comparison of SCR with MOSFET & IGBT EE Power Electronics and Drives 1

5 02 - Turn ON & Turn off methods of SCR: 2.1 Thyristor Turn On Methods:Voltage Triggering, GateTriggering, dv/dt Triggering and Light Triggering, Temperature triggering. 2.2 Gate Control using R,RC,UJT. 2.3 Thyristor Turn off methods. a) Natural Commutation b) Forced Commutation : Class A- Self commutation by resonating load Class B- Self commutation by LC circuit Class C- Complementary commutation Class D Auxilliary commutation Class E external pulse commutation Line Commutation (Natural Commutation) 2.4 Thyristor Specifications and Ratings - Voltage Ratings, Current Ratings,Power Ratings and Temperature Ratings. 2.5 Two transistor analogy of SCR. 2.6 Thyristor protection methods. Concept of heat sink,necessity of protection circuit methods: di /dt protection, dv/dt protection/ snubber circuit,etc. (Specifications of devices not to be asked in exam.) Converters: 3.1 Introduction 3.2 Single Phase Fully Controlled Half Wave Converter - With Resistive Load - With RL Load and Freewheeling Diode. 3.3 Single Phase Fully Controlled Full Wave Converter - With Resistive Load & - With RL Load. 3.4 Single Phase Fully Controlled Bridge Converter - With Resistive Load & - With RL Load 3.5 Three Phase Fully Controlled Bridge Converter - With RL Load. 3.6 Comparison of 3 phaseand 1 Phase Converters Power Electronic Applications: 4.1 Phase control using TRIAC 4.2 Light dimmer 4.3 Fan regulator V Battery charger 4.5 Temperature Control using SCR 4.6 Universal motor speed control using thyristors 4.7 Emergency light system 4.8 DC time delay relay using UJT & SCR EE Power Electronics and Drives 2

6 Section II 05 - Inverters: 5.1 Introduction 5.2 Classification: 1phase & 3phase Inverters, Line Commutated & Forced Commutated Inverters, Series, Parallel, & Bridge Inverters. 5.3 Series Inverter - Operation of Basic Series Inverter Circuit, Modified Series Inverter, Three Phase Series Inverter. 5.4 Parallel Inverter -Operation of Basic Parallel Inverter Circuit. 5.5 Single Phase Bridge Inverter = Half Bridge Inverter, Full Bridge Inverter Choppers: 6.1 Introduction 6.2 Chopper Principle 6.3 Control Techniques: 6.4 Constant Frequency System 6.5 Variable Frequency System 6.6 Step Up Chopper And Step down chopper(using MOSFET and SCR) 6.7 Concept of Quadrant operation. 6.8 Classification of Choppers. 6.9 Circuit diagram and working of Class A, Class B, Class C, Class D and Class E choppers (Using SCR) Drives: 7.1 Concept of Electric drives. 7.2 DC Drives - Speed control of DC series motor with single phase and three phase half and full controlled converter, Introduction to DC servo motor, Speed control of DC servomotor. 7.3 AC Drives - Speed control of three phase Induction Motor with Variable frequency. 7.4 AC servomotor, speed control of AC servomotor, AC voltage stabilizer using servo-mechanism. 7.5 Other Applications: - armature voltage control circuit using SCR for d.c motors - Static Circuit Breakers (DC & AC) - Induction Heating Control, - Di-electric Heating Control - Electric Welding Control. - Static Excitation System for Alternators (using variable DC supply) List of Practical:(Any Ten) 1. To understand working of SCR & plot V-I Characteristics of SCR. 2. To plot V-I Characteristics of DIAC. 3. To plot V-I Characteristics of TRIAC. 4. To observe output of single phase Half /Full Wave converter Using SCR. 5. To plot V-I characteristics of SCR triggering (R,RC,UJT) 6. To observe the output waveform of series Inverter. 7. To observe the output waveform of Parallel Inverter. EE Power Electronics and Drives 3

7 8. To observe the output waveform of step up Chopper. 9. To understand working of Light Dimmer. 10. To understand working of Fan regulator. 11. To observe the output voltage of simple 12v Battery Charger Using thyristor. 12. Temperature control using Thyristor. 13. Time delay relay using SCR & UJT. 14. Study speed control of single phase AC/ DC/Induction motor using thyristor. Reference Books: 1. Power Electronics by M.D.Singh and Khanchandani, Publisher: TATA McGraw Hill 2. Power Electronics by H Rai, Publisher: SatyaPrakshan 3. Power Electronics by Mohan and Robbins, Publisher: Wiley 4. SCR Manual 5. Power Electronics by Dr. P.S.Bimbhra, Publisher: Khanna Publishers EE Power Electronics and Drives 4

8 Programme Code: Electrical Engineering Course Code: EE Compulsory / Optional: Compulsory Teaching Scheme and Credits Course Title: Industrial Automation Examination Scheme TH TU PR Total TH TS PR OR TW Total (Ext) Rationale: * This subject is considered for the award of class. The aim of this course is to develop the technician to carry out the responsibilities in the industries related to industrial control. Diploma holder employed in industry needs to operate, test and maintain the industrial drives and its power control. It is very essential for him to know the electrical logic, Input devices, Control supply, control devices and designing control circuits. This subject covers design of electromagnetic control circuit, basics of PLC programming and introduction to SCADA, operation of hydraulic and pneumatic control systems. This knowledge will help the diploma holder to work as an automation engineer in the industry. Objectives: The students will be able to 1. Design and read the electromagnetic control circuit. 2. Explain fluid power and its control. 3. Explain the control of pneumatic and hydraulic power. 4. Describe the working of PLC 5. Develop ladder programs for various industrial applications. Section I 01 Introduction to Industrial Automation: 1.1 Importance of automation. 1.2 Types of automation. 1.3 General idea of control, manufacturing and assembly processes. 1.4 Comparison between Relay based and PLC based control systems Programmable logic controllers: 2.1 Introduction definition and history of the PLC. 2.2 PLC advantages and disadvantages. 2.3 Types of PLC-Fixed and modular. 2.4 List of PLC manufacturers. 2.5 PLC Specifications. 2.6 Comparison between PC and PLC. 2.7 PLC block diagram- Central processing unit, Power supplies, I/O modules, Programming devices, Memory. 2.8 Scan cycle of PLC. 2.9 List of remote digital and analog I/Os EE Industrial Automation 1

9 03 PLC programming: 3.1 PLC programming languages. 3.2 Development of PLC ladder diagrams. 3.3 Basic concept of ladder. 3.4 Rules of ladder. 3.5 Classification of PLC instructions. 3.6 Bit type instructions- XIC, XIO, OTE, OTL, OUT, OSR. 3.7 Logical instructions- OR, AND, NOT, XOR. 3.8 Comparison instructions- EQU, NEQ, LES, LEQ, GRT, GERQ, LIM. 3.9 Timer instructions- TON, TOFF, RTO Counter instructions- CTU, CTD Scaling instructions- SCP Industrial process examples- Bottle filling plant, Diesel generator set control, Motor control, Traffic light control Introduction to advanced control systems: 4.1 SCADA- brief introduction to hardware & software used. 4.2 Distributed Control System(DCS)-brief introduction to hardware & software used Section II 05 Electrical control system components: 5.1 Construction, working, specifications and applications of following devices: 5.2 The contactors- Types, Current capacity, Load utilization categories. 5.3 The solenoid- A.C. solenoid, D.C. solenoid. 5.4 Manual control switches- push buttons, selector switches. 5.5 Pilot switches- Limit switches, proximity switches, photoelectric switch, temperature actuated switches, level control switch, pressure-sensing switch, Overload sensing switch. 5.6 Output devices Contactors, Solenoid actuated valves, pilot lamps. 5.7 Control supplies-control transformer rectifier Electrical Actuators 6.1 Potentiometers working and use as error detector 6.2 Servomotors ac and dc working principle. 6.3 Synchros transmitter, control transformer, use of as error detector. 6.4 Stepper motor PM & variable reluctance working principle 6.5 Tacho generator 6.6 Applications of above components as AC/DC control system EE Industrial Automation 2

10 07 Hydraulic and pneumatic systems: 7.1 Brief comparison between electrical, hydraulic and pneumatic control system-merits and demerits. 7.2 Symbols of various components. 7.3 Components of Pneumatic system Types of compressors, FRL unit and its working. 7.4 Pneumatic output devices - Working of Single acting, double acting cylinder, Vane motor. 7.5 Hydraulic and pneumatic control devices - working of direction control valves, pressure control valves and flow control valves. 7.6 Examples of application of pneumatic circuit continuous to and fro motion of piston, logical OR, AND circuit. 7.7 Examples of application of hydraulic circuit shaper circuit, sequence circuit List of Practical: 1. To develop ladder diagrams for ON/OFF inputs to produce ON/OFF outputs. 2. To develop ladder diagrams for logic gates OR, AND, NOT, XOR. 3. To develop ladder diagrams for traffic light control system. 4. To develop ladder diagrams for counting objects. 5. To develop ladder diagrams for temperature measurement. 6. To develop simple programmes for comparison instruction. 7. Design ON and OFF Switch in SCADA 8. Measure step angle for a stepper motor in forward and reverse direction. 9. A) To plot the characteristics of potentiometer B) Use of potentiometer as error detector 10. Draw the Symbol sheet for different pneumatic and Hydraulic components Reference Books: 1. Programmable Logic Controllers, Principles and applications by John W. Webb Ronald A Reis Publisher: Eastern Economy Edition. 2. Electronics Instrumentation by H. S. Kalsi, Publication Tata McGraw Hill 3. Fluid Power Systems by Anthony Esposito, Publisher: Pearson Education, New Delhi. 4. Hydraulics & Pneumatics by Andrew Parr, Publisher Jaico Publication EE Industrial Automation 3

11 Programme Code: Electrical Engineering Course Code: EE Compulsory / Optional: Compulsory Teaching Scheme and Credits Course Title: Project and Seminar Stage II Examination Scheme TH TU PR Total TH TS PR OR TW Total *(Ext) Rationale: *This subject is considered for the award of class. Diploma technicians come across different types of problems of various natures. To solve those problems students are required to know the facts, concepts and techniques of electrical machines,switchgears,control panels & electrical equipment s, its repairs, fault finding and testing, estimation of cost and procurement of material, fabrication and manufacturing of various items used in electrical field. In order to develop them systematically for different problem solving needs, by previous technical knowledge, and skills learnt in previous semester, this subject is incorporated in the curriculum. Objectives: At the end of course students will be able to: Analyses of the different types of Case studies. Develop Innovative ideas. Develop basic technical Skills by hands on experience. Work out different solutions of the problems. Develop skills to use latest technology in Electrical field. Work effectively in a team. Prepare effective documents. Prepare learning material. Acquire effective presentation skills. Develop leadership qualities. Develop communication skills. Methodology: A project diary is to be maintained by each student, giving details of planning, work executed, information collected etc., on weekly basis. And the same should be shown to the guide concerned. Project report should be as per IEEE format Completion of project Every student will prepare a report after completion of project EE Project and Seminar stage II 1

12 Programme Code: Electrical Engineering Course Code: MG Compulsory / Optional: Compulsory Teaching Scheme and Credits Course Title: Industrial Organization and Management Examination Scheme TH TU PR Total TH TS PR OR TW Total Rationale:- * This subject is considered for the award of class. Management concepts are universal and it is a multidisciplinary subject. They are equally applicable to different types industries like Manufacturing, Service and Trade as well as different kind of business activities like industry, army, school, hospital, retail shops etc. Also, at the end of diploma course polytechnic students are expected to enter in to the Industrial Environment. This environment is altogether different and new to the students. A proper introduction and understanding of management fundamentals is therefore essential for all these students. Contents of the this subject will enable the students to address various issues related to human resource, finance, materials, legislations etc. by use of basic principles of management. This will ensure that students will play their role effectively to enhance the quality of business output in total. Objectives:- The students will able to: 1. Familiarize them with environment related to business processes. 2. Know the management aspects of the organisation 3. Understand Role & Responsibilities of a Technician 5. Appreciate the importance of ethics, corporate social responsibility and quality Section I 01 BUSINESS 1.1 Definition 1.2 Characteristics 1.3 Classification 1.4 Objectives 1.5 Types of Business organizations 1.6 Business environment 1.7 Globalization and its effects on Indian economy 1.7 Business Ethics and Social Responsibility 1.8 Major areas of Indian industry 02 ORGANIZATION. 2.1 Definition, Need. 2.2 Essentials 2.3 Types of organization Structures ( line, functional, line & staff) 2.4 Forms of organizations (Proprietorship, partnership, joint stock companies, Govt. Enterprises, co-operative enterprises) MG Industrial Organization and Management 1

13 03 INDUSTRIAL ACTS. 3.1 Factory Act 3.2 Industrial dispute act 3.3 Pollution control act 3.4 Indian Electricity act 3.5 Industrial safety (Accident, causes and prevention) 04 ADMINISTRATION. 4.1 Definition 4.2 Difference between Administration & Management 4.3 Types of administration (centralized, individual) 4.4 Roles, Responsibilities & functions of administrator 4.5 Problems associated with administration Section II 05 MANAGEMENT. 5.1 Concept, Definition 5.2 Scientific Management 5.3 Levels of Management & their duties 5.4 Principles of Management 5.5 Functions of Management 5.6 Management strategies- MBO, MBP, MBE (Management By Objective, Participation, Exception) FINANCIAL MANAGEMENT. 6.1 Objectives 6.2 Types of Capitals 6.3 Sources of Finance 6.4 Break Even Analysis, Profit-loss Accounts, Balance Sheet 6.5 Taxes (Sales Tax, Income Tax, VAT, and Excise.) HUMAN RESOURCE MANAGEMENT 7.1 Functions of Personnel Management 7.2 Staffing- manpower planning, Recruitment, Selection, 7.3 Training (Definition, Objectives, Types) MATERIALS MANAGEMENT. 8.1 Purchase Procedure 8.2 Inventory (Definition, Types) 8.3 Inventory Control (ABC analysis, EOQ concept) TOTAL QUALITY MANAGEMENT 9.1 Concept, Definition 9.2 Principles of Total Quality(TQ) 9.3 Total Quality(TQ) management practice 3 6 MG Industrial Organization and Management 2

14 Note: There will be home assignments(minimum five) based on the Case Studies discussed at the end of the topic. The faculty shall identify the Case Studies and make them available to students at the commencement of the session. This is aimed at developing the better insight into the subject. However no questions shall be asked on the Case Studies, while setting the theory question paper. Reference Books: 1. Industrial Engineering and Management, Author Dr. O.P.Khanna, Publisher Dhanpat Rai & Sons New Delhi. 2. Industrial Engineering & Management, Author Banga and Sharma, Publisher Khanna Publication 3. Business Administration and Management, Author Dr. S.C.Saksena, Publisher Sahitya Bhavan Agra 4. The Process of Management, Author W.H.Newman E. Kirby Warren Andrew R. McGill, Publisher Prentice - Hall MG Industrial Organization and Management 3