## Engineering Thermodynamics When a gas is heated, change takes place in

Pressure
Volume
Temperature
All of the listed here

## Engineering Thermodynamics The unit of pressure in S.I. units is

mm of water column
Dyne per square cm
kg/cm²
Pascal

## Engineering Thermodynamics Which of the following statement is correct according to Clausis statement of second law of thermodynamics?

None of these
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature by using refrigeration cycle.
It is impossible to transfer heat from a body at a lower temperature to a body at a higher temperature, without the aid of an external source.
It is possible to transfer heat from a body at a lower temperature to a body at a higher temperature.

Celsius
Fahrenheit
Kelvin

## Engineering Thermodynamics When the gas is cooled at constant pressure,

Its volume increases but temperature decreases
Both temperature and volume increases
Its temperature increases but volume decreases
Both temperature and volume decreases

## Engineering Thermodynamics If the value of n = 0 in the equation pvn = C, then the process is called

Constant volume process