1. Which of the following is the extensive property of a thermodynamic system ?

Pressure

Volume

Temperature

Density

Answer: Volume

Explanation:


2. Kelvin-Planck's law deals with ?

conservation of work

conservation of heat

conversion of heat into work

conversion of work into heat

Answer: conversion of heat into work

Explanation:


3. A process, in which the gas is heated or expanded in such a way that the product of pressure and volume remains constant, is called ?

isothermal process

hyperbolic process

adiabatic process

polytropic process

Answer: hyperbolic process

Explanation:


4. The efficiency of Carnot cycle depends upon ?

temperature limits

pressure ratio

volume compression ratio

cut-off ratio and compression ratio

Answer: temperature limits

Explanation:


5. The specific heat of water is ?

1.817

2.512

4.187

none of these

Answer: 4.187

Explanation:


6. When a perfect gas is expanded through an aperture of minute dimensions, the process is known as ?

isothermal process

adiabatic process

free expansion process

throttling process

Answer: throttling process

Explanation:


7. Which of the following is an intensive property of a thermodynamic system ?

Volume

Temperature

Mass

Energy

Answer: Temperature

Explanation:


8. A process, in which the temperature of the working substance remains constant during in expansion or compression, is called ?

isothermal process

hyperbolic process

adiabatic process

polytropic process

Answer: isothermal process

Explanation:


9. The behaviour of super-heated vapour is similar to that of ?

perfect gas

air

steam

ordinary gas

Answer: perfect gas

Explanation:


10. Which of the following is correct ?

Absolute pressure = Gauge pressure + Atmospheric pressure

Gauge pressure = Absolute pressure Atmospheric pressure

Atmospheric pressure = Absolute pressure + Gauge pressure

Absolute pressure = Gauge pressure - Atmospheric pressure

Answer: Absolute pressure = Gauge pressure + Atmospheric pressure

Explanation: