Refrigeration and Air Conditioning Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle? 1.25 0.5 0.8 0.25 1.25 0.5 0.8 0.25 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During adiabatic saturation process on unsaturated air ___ remains constant. Dew point temperature Wet bulb temperature Dry bulb temperature Relative humidity Dew point temperature Wet bulb temperature Dry bulb temperature Relative humidity ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature to 50% relative humidity and 25° C dry bulb temperature (room condition). The practical arrangement will be Dehumidification Dehumidification and pure sensible cooling Cooling and dehumidification Cooling and humidification Dehumidification Dehumidification and pure sensible cooling Cooling and dehumidification Cooling and humidification ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The sensible heat factor during the heating and humidification process is given by (where h₁ = Enthalpy of air entering the heating coil, h₂ = Enthalpy of air leaving the heating coil, and hA = Enthalpy of air at the end of humidification process) (hA - h2)/ (h1 - h2) (h2 - hA)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h1 - h2)/ (hA - h2) (hA - h2)/ (h1 - h2) (h2 - hA)/ (h1 - h2) (hA - h1)/ (h2 - h1) (h1 - h2)/ (hA - h2) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The process, generally used in winter air-conditioning to warm and humidity the air, is called Cooling and dehumidification Dehumidification Heating and humidification Humidification Cooling and dehumidification Dehumidification Heating and humidification Humidification ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Which of the following statement is correct for ammonia as a refrigerant? It requires large displacement per TR compared to fluoro carbons. All of these It reacts with copper and its alloys. It is toxic to mucous membranes. It requires large displacement per TR compared to fluoro carbons. All of these It reacts with copper and its alloys. It is toxic to mucous membranes. ANSWER DOWNLOAD EXAMIANS APP
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