## Engineering Thermodynamics The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

δQ = T/ds
None of the listed here
dQ = ds/T
δQ = T.ds

## Engineering Thermodynamics According to Avogadro's law, for a given pressure and temperature, each molecule of a gas

Occupies same volume
Occupies volume inversely proportional to its molecular weight
Occupies volume proportional to its specific weight
Occupies volume inversely proportional to its specific weight

## Engineering Thermodynamics For the same compression ratio, the efficiency of dual combustion cycle is

Greater than Diesel cycle
Less than Diesel cycle
Greater than Diesel cycle and less than Otto cycle
Less than Diesel cycle and greater than Otto cycle

## Engineering Thermodynamics Work done is zero for the following process

Constant volume
Free expansion
All of the listed here
Throttling

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

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

## Engineering Thermodynamics A heat exchange process in which the product of pressure and volume remains constant is known as

Hyperbolic process
Heat exchange process
Throttling process
Isentropic process