Refrigeration and Air Conditioning The emissivity of a polished silver body is ____ as compared to black body. High Very low Low Same High Very low Low Same ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The boiling point of ammonia is -77.7°C -33.3°C -30°C -10.5°C -77.7°C -33.3°C -30°C -10.5°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The value of C.O.P in vapour compression cycle is usually Always less than unity Any one of the above Equal to unity Always more than unity Always less than unity Any one of the above Equal to unity Always more than unity ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature) T₂/ (T₂ - T₁) (T₂ - T₁)/T₁ T₁ / (T₂ - T₁) (T₁ - T₂)/T₁ T₂/ (T₂ - T₁) (T₂ - T₁)/T₁ T₁ / (T₂ - T₁) (T₁ - T₂)/T₁ ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Chaperon equation is a relation between Temperature, pressure, specific volume and enthalpy Temperature, pressure and enthalpy Temperature and enthalpy Specific volume and enthalpy Temperature, pressure, specific volume and enthalpy Temperature, pressure and enthalpy Temperature and enthalpy Specific volume and enthalpy ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is 3.72 kW 18.6 kW 1.86 kW 7.44 kW 3.72 kW 18.6 kW 1.86 kW 7.44 kW ANSWER DOWNLOAD EXAMIANS APP
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