GOVERNMENT ENGINEERING COLLEGE, GODHRA
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1 Practical No. - 1 To understand construction and working of various types of Steam boilers. 1) What is the function of Steam boiler? And what are factors should be considered while selecting a boiler? 2) Explain with neat sketches the natural circulation & forced circulation in boiler. 3) Differentiate between (i) fire tube and water tube boilers (ii) internally and externally fired boilers 4) State the factor affecting the selection of a boiler. 5) Sketch and explain a Cochran & Babcock and Wilcox boiler & Lancashire boiler. 6) Give detail classification of boiler.
2 Practical No. - 2 To understand construction and working of different boiler mountings and accessories. 1) Distinguish between boiler mountings and accessories. 2) Enlist various boiler mountings and accessories. 3) Explain with neat sketches the working and function of all boiler mountings. 4) Explain with neat sketches the working and function of all boiler accessories. 5) What is draught? State the function of chimney.
3 Practical No. - 3 To study about internal combustion engines. 1) Define heat engines. How they are classified? 2) Compare I.C and E.C engines. 3) Give classification of I.C. engine in detail. 4) Explain the various important parts of an I.C.engine. 5) Define:- (i) Clearance volume (ii) Swept volume (iii) Compression ratio (iv) Indicated and brake power (v) Mechanical and thermal efficiency (vi) Relative, air standard and volumetric efficiency (vii) Specific fuel consumption (viii) Bore, stroke and piston speed
4 Practical No. - 4 To understand construction and working of Petrol engines. 1) Explain with the help of neat sketch the working of a 4-stroke petrol engine. 2) Why petrol engines are called as S.I. engine? 3) Comparison between 2-stroke and 4-stroke petrol engine. 4) Explain with the help of neat sketch the working of a 2-stroke petrol engine. 5) Why 4-stroke engines are more fuel efficient?
5 Practical No. - 5 To understand construction and working of Diesel engines. 1) Explain with the help of neat sketch the working of a 4-stroke diesel engine. 2) Why diesel engines are called as C.I. engine? 3) Comparison between S.I and C.I engines. 6) Comparison between 2-stroke and 4-stroke cycles engine. 4) What do you understand by term scavenging? Explain. 5) Explain with the help of neat sketch the working of a 2-stroke diesel engine.
6 Practical No. - 6 To understand construction and working of different types of pumps. 1) Define pump. Give few application of the pump. 2) Give classification of the pump. 3) Explain with the help of neat sketch the working of a single & double acting reciprocating pump. 4) State main components of reciprocating pump & centrifugal pump. 5) Explain with the help of neat sketch the working of a centrifugal pump. 6) Give classification of the centrifugal pump. And explain all in detail. 7) Comparison between :- (i) Reciprocating pump & centrifugal pump. (ii) Rotary positive displacement and roto dynamic pump. 8) What is priming? Why priming is required in centrifugal pump but not in reciprocating pumps? 9) Explain with the help of neat sketch the working of Gear pump, Vane pump and screw pump.
7 Practical No. - 7 To understand construction and working of different types of air compressors. 1) What is air-compressor? Why it is considered as reversed heat engine? 2) How compressor is differing from pump? 3) Give classification of the compressor. And explain all in detail with diagram. 4) Comparison between :-(i) Reciprocating compressor & rotodynamic compressor. 5) Explain with the help of neat sketch the working and construction of a single & double stage acting reciprocating air compressor. 6) What is clearance volume? Why is it required in a compressor? 7) Derive an equation for work done in case of a single stage single acting reciprocating air compressor neglecting clearance. 8) Why multistage compression is required? Give advantages of this compression. 9) Derive the volumetric efficiency equation for a single stage, single acting reciprocating air compressor. 10) Explain with the help of neat sketch the working and construction of a centrifugal compressor, axial flow compressor, roots blowers, and vane type compressor.
8 Practical No. - 8 To study about refrigeration and air-conditioning. 1) Define: - (i) Refrigeration. (ii) Air-conditioning (iii) 1 ton refrigeration (iv) Refrigeration effect. (v) Refrigerant. 2) Explain principal of refrigeration & air-conditioning. 3) Give the classification of refrigerator. 4) Explain with a neat sketch the working of a vapour compression refrigerator (VCR) and vapour absorption refrigerator (VAR). 5) Draw the flow diagram of VCR & VAR. and write function of each component. 6) Explain with a neat sketch the working of a window air-conditioner and split a.c. State their advantages & disadvantages. 7) Differentiate between :- (i) refrigeration and air-conditioning. (ii) VCR and VAR.
9 Practical No. - 9 To understand construction, working and applications of different types of coupling, clutch and brake. 1) Define and State its function :- (i) coupling (ii) clutch (iii) brake 2) Classify the various types of coupling, clutch, and brake And give example of their application. 3) Explain with neat sketch the construction and working of all types couplings. 4) Explain with neat sketch the construction and working of all types clutches. 5) Explain with neat sketch the construction and working of all types brakes. 6) Difference between :- (i) rigid and flexible coupling. (ii) protected and unprotected type flange coupling. (iii) Coupling and clutch. (iv) Clutch and brake. (v) Disc and drum brakes.
10 Practical No To study about transmission of motion and power. 1) Define: - (i) shaft (ii) axle (iii) spindle (iv) bearing (v) drive (vi) slip & creep (vii) velocity ratio of gear drives and chain drives. 2) Classification of bearings. And explain with neat sketch all types of bearings & its advantages & disadvantages. 3) Classification of belt drives. And explain with neat sketch all types of belt drives. 4) Explain and derive tensions in belt drives. 5) Define gear drive. And states its advantages & disadvantages. 6) Explain with neat sketch all types of gears. 7) Define gear train. And explain with neat sketch all types of gear trains. 8) Define pulley. And explain with neat sketch all types of pulleys. 9) Define chain drive. And explain with neat sketch all types of chain drives. 10) Comparison between :- (i) Individual and group drive. (ii) Radial and thrust bearing. (iii) Sliding and rolling contact bearing. (iv) Simple and compound gear train. (v) Flat and V-belt drive. (vi) Belt drive, chain drive and gear drive. 11) What are the factors affecting the selection of drives? 12) Write in detail about transmission of motion and power.
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