prospectus for b.tech lateral entry course - Directorate of Technical ...

C) Second law of thermodynamics D) Boyle’s law2. The maximum possible thermal efficiency of a heat engine working between 27 0 Cand 627 0 C isA) 100% B) 95.69% C) 66.67% D) 45%3. For an irreversible process,A) Change in entropy < δQ/T B) Change in entropy > δQ/TC) Change in entropy = δQ/T D) Change in entropy = 04. Work done during isothermal process is given byA) W = P 1 V 1 log (V 2 /V 1 ) B) W = P 1 V 1 log e (V 2 /V 1 )C) W=0 D) W = (P 1 V 1 – P 2 V 2 )/(γ - 1)5. A Diesel Cycle consists of the following processesA) Two constant volume and two adiabatic processesB) Two constant pressure and two adiabatic processesC) Two adiabatic, a constant volume and a constant pressure processesD) Two adiabatic and two isothermal processes6.In a petrol engine, the unit which mixes fuel with air is calledA) cylinder B) carburetor C) radiator D) crank shaft7. During a throttling processes the ---------------------remains constantA) pressure B) temperatureC) internal energy D) enthalpy8. 1.25 kg of wet steam contains 0.25 kg of water in suspension. Dryness fractionof the steam isA) 1.25 B) 0.80 C) 0.75 D) 0.259. The heat required to convert water at boiling point to dry steam at sametemperature isA) specific heat B)latent heat of vapourisationC)sensible heatD) latent heat of fusion10. One ton refrigeration refers toA) Total weight of the unitB) Heat removal rate equivalent to latent heat of fusion of 1 ton of ice at0 0 C in 24 hoursC) Heat removal rate equivalent to latent heat of fusion of 1 ton of ice at 0 0 C in 1hourD) Heat removal rate equivalent to latent heat of fusion of 1 ton of ice at0 0 C in 1 second11. The top part of a two part moulding box is calledA) cope B) drag C) runner D) gate12. The forging process used for increasing the diameter of a bar by reducing its20