52.SSC JE (ME)II Refrigeration and Air Conditioning Booster Quiz-5

If the ratio of the lower to the higher absolute temperature is 7/8, then what will be the COP of the Carnot refrigerator?

COP of a domestic refrigerator as compared to that of an air conditioner is generally

The atmospheric air at DBT is 20°C . It enters a heating coil which is maintained 50°C . It the air leaves the heating coil at 35°C, then what will be the efficiency of the coil __________?

The evaporative cooling system is suitable under:

In case of saturated air-water vapor mixture, the

Humidity Ratio is given by; where is barometric pressure, is partial pressure of saturated air, is partial pressure of water vapor, pressure at DBT, pressure at WBT,  is degree of saturation.

Refrigerant-22 has chemical formula:

For leakage detection in a refrigeration system using Freon, which of the following is used: