Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

Between the saturated liquid line and saturated vapour line
To the left of saturated liquid line
To the right of saturated liquid line
None of these

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
In a vapour compression refrigeration system, a throttle valve is used in place of an expander because

It leads to significant cost reduction
The positive work in isentropic expansion of liquid is very small
It considerably reduces mass of the system
It improves the C.O.P., as the condenser is small

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
A one tonne refrigerating machine means that

One tonne of water can be converted into ice
One tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min
One tonne is the total mass of machine
One tonne refrigerant is used

ANSWER DOWNLOAD EXAMIANS APP