SSC JE Mechanical Engineering 2nd March 2017 Shift-1

Stagnation property

Standard property

Simple property

None of these

lowers the boiling point of a liquid

raises the boiling point of a liquid

does not affect the boiling point of a liquid

reduces its volume

Boiler efficiency, turbine efficiency and generator efficiency

Boiler efficiency, turbine efficiency, generator efficiency and gas cycle efficiency

Carnot cycle efficiency

Regenerative cycle efficiency

its temperature

nature of the body

kind and extent of its surface

All optons are correct

a dimensionless parameter

function of temperature

used as mathematical model

a physical property of the material

of cooling medium

of freezing zone

of evaporator

at which refrigerant gas becomes liquid

convection increases, where as due to conduction decreases

convection decreases, where as due to conduction increases

both convection and conduction decreases

both convection and conduction increases

dry bulb temperature is less than the wet bulb temperature

dew point temperature is less than wet bulb temperature

dew point and wet bulb temperatures are equal

dry bulb and dew point temperatures are equal

specific humidity of the air increases

specific humidity of the air decreases

relative humidity of the air increases

relative humidity of the air decreases

keep the COP constant

prevent the liquid refrigerant from entering the compressor

sub-cool the liquid refrigerant leaving the condenser

sub-cool the vapour refrigerant from the evaporator