Test: Refrigeration & Air Conditioning - 1 - Mechanical Engineering MCQ

The cycle used for gas refrigeration is

Air refrigeration cycle is used in

In VARC, The compressor is replaced by

In which  of the following cycles waste heat is utilized .

In vapour absorbtion cycle the refrigerant used can be mixure of water and

The throttling device is replaced by an expender in which of the following system

The maximum COP of an absorbtion cycle is given by (T_G = Generator Temperature, T_o = Environment temperature, T_e = Evaporator temperature)

Which o f t he fo llowing is an eco friendly refrigerant ?

Which of  the following is a saturated hydrocarbon.

Ozone is naturally found in

Which of the following is designation of H₂O

Ammonia leakage from refrigerat or can be detected by

 The refrigerant used in milk chilling plant is

In a electrolux refrigerator apart from NH₃ and H₂O the third gas used is

Reversed brayton cycle is also known as

As COP of an Refrigerator increases in heat rejection ratio

Energy performance ratio is

The COP of a refrigerator working on reversed carnot cycle is 4. The ratio of highest absolute temperature is lowest absolute temperature is .

A carnot Refrigerator requires 1.5 kw/ton of refrigeration to maintain a region at a temperature of 243 K. The COP is

An ideal Refrigeration cycle has condenser and evaporator temperature of 27º C and – 3ºC. The COP of the Refrigerator is

A heat pump works on reversed carnot cycle.The temperature in the condenser coil is 27ºC and that in the evaporator coil is -23ºC and that in the evaporator coil is -23ºC. For work of 1.5 kW, how much heat is pumped.

A condenser of a refrigerator reject heat at a rate of 150 kw, while compressor consumes a power of 50kW. The COP is.