State and explain zeroth law of thermodynamics.
[3 marks]List sources of renewable energy.
[4 marks]Define prime mover and classify it.
[7 marks]Derive characteristic equation of a perfect gas.
[3 marks]Define following terms:
[4 marks]Dryness fraction (ii) Degree of superheat (iii) Enthalpy of evaporation (iv) Enthalpy of superheated steam
[ marks]One kg of gas is compressed polytropically from 150 kPa pressure and 290 K temperature to 750 kPa. The compression is according to law pV1.3 = C. find :
[7 marks]Final temperature (ii) Work-done (iii) Change in internal energy (iv) Amount of heat transferred
[ marks]Change in enthalpy, Take R=0.287 kJ/kg Kand c = 1.001 kJ/kg K p
[ marks]Determine dryness fraction of steam supplied to a separating and throttling calorimeter. Water separated in separating calorimeter = 0.45 kg Steam discharge from throttling calorimeter = 7 kg Steam pressure in main pipe = 1.2 MPa Barometer reading= 760 mm of Hg Manometer reading = 180 mm of Hg Temperature of steam after throttling = 140° C Take C =2.1kJ/kgK ps
[7 marks]State limitations of Carnot gas power cycle.
[3 marks]Compare 2- stroke engine with 4- stroke engine.
[4 marks]Derive an expression of air standard efficiency of Otto cycle. Draw its P-V and T-Sdiagram.
[7 marks]State assumptions considered for analysis of air standard cycle.
[3 marks]Derive an expression for thermal efficiency of rankine cycle.
[4 marks]The following data is available for 2-stroke diesel engine:1 Bore = 10 cm, stroke = 15 cm, engine speed=1000 rpm, torque developed= 58 N-m, η = 80%, η = 40%, calorific value of fuel =44000 kJ/kg. m i,th Find: (i) Indicated power (ii) Mean effective pressure (iii) Brake specific fuel consumption.
[7 marks]Define Compressor. State uses of compressed air.
[3 marks]Discuss briefly location and function of the followings;
[4 marks]Water level indicator (ii) Pressure Gauge
[ marks]Explain with neat sketch working of Cochran boiler.
[7 marks]Define following with reference to air compressor;
[3 marks]Free air delivery (ii) Swept volume (iii) Volumetric efficiency
[ marks]Differentiate between boiler mountings and accessories.
[4 marks]Explain with neat sketch construction and working of split air conditioner.
State the application of following gears
[3 marks]Helical gear, (ii) worm and worm gear (iii) rack and pinion
[ marks]What is coupling? Classify it.
[4 marks]Explain with neat sketch working of centrifugal pump.
[7 marks]Enlist types of belt drive.
[3 marks]Differentiate between clutch and brake.
[4 marks]Explain following properties of materials.
[7 marks]Elasticity, (ii) Plasticity, (iii) Ductility, (iv) Brittleness (v) Hardness (vi) Toughness, (vii) Fatigue
[ marks]