Q.1.

The pressure exerted by an ideal gas is __________ of the kinetic energy of all the molecules contained in a unit volume of gas.

Q.2.

In the first law of thermodynamics, the total energy of the system remains constant.

Q.3.

The efficiency and work ratio of a simple gas turbine cycle are

Q.4.

The compression ratio for petrol engines is

Q.5.

The efficiency of Diesel cycle increases with

Q.6.

When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.

Q.7.

When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.

Q.8.

The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called

Q.9.

Coal gas is obtained by mixing coal and gas at ambient conditions.

Q.10.

Which of the following is the lightest and most volatile liquid fuel?

Q.11.

There is a loss of heat in an irreversible process.

Q.12.
Heat is
Q.13.
Which of the following has the highest calorific value?
Q.14.
How does a refrigerator work?
Q.15.
Mixture of ice and water form a
Q.16.
Addition of heat at constant pressure to a gas results in
Q.17.
Warm air rises and cold air sinks demonstrates what?
Q.18.
Define Exothermic
Q.19.
Which of the following is NOT a conductor?
Q.20.
Which of the following gas has the highest calorific value?
Q.21.
The absolute zero pressure can be attained at a temperature of
Q.22.
What happens to particles when they are heated?
Q.23.
When cut-off ratio is ________; the efficiency of Diesel cycle approaches to Otto cycle efficiency
Q.24.
Water has a specific heat ofJ/KgºC. Wood has a specific heat ofJ/KgºC. What material needs more energy to raise the temperature 1ºC
Q.25.
In closed cycle gas turbine, the air is compressed
Q.26.
If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to
Q.27.
How are solids different from liquids?
Q.28.
Carbonization of coal consists of
Q.29.
The value of cp/cv for air is
Q.30.
The unit of power in S.I. units is