Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Right

Wrong

freezing at the expansion valve

restriction to refrigerant flow

corrosion of steel plates

all of these

The value of C.O.P. is always greater than one.

In a vapour compression system, the condition of refrigerant before entering the compressor is dry saturated vapour.

The space between the saturated liquid line and saturated vapour line, in a pressure enthalpy chart, is wet vapour region.

none of the above

remains constant

increases

decreases

none of these

irregular surfaces

non-uniform temperature surfaces

one dimensional cases only

two dimensional cases only