Question: Defrosting of a refrigerator may be done by stopping the compressor for a short period. [A]. Correct [B]. Incorrect Answer: Option A Explanation: No answer description available for this question.

Question: In a vapour compression system, the condition of refrigerant before passing through the condenser is [A]. saturated liquid [B]. wet vapour [C]. dry saturated vapour [D]. superheated vapour Answer: Option D Explanation: No answer description available for this question.

Question: In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is [A]. high pressure saturated liquid [B]. wet vapour [C]. very wet vapour [D]. dry vapour Answer: Option A Explanation: No answer description…

Question: During a refrigeration cycle, heat is rejected by the refrigerant in a [A]. compressor [B]. condenser [C]. evaporator [D]. expansion valve Answer: Option B Explanation: No answer description available for this question.

Question: In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve. [A]. True [B]. False Answer: Option A Explanation: No answer description available for this question.

Question: In mechanical refrigeration system, the refrigerant has the maximum temperature [A]. in evaporator [B]. before expansion valve [C]. between compressor and condenser [D]. between condenser and evaporator Answer: Option C Explanation: No answer description available for this question.

Question: The air cooling system mostly used in transport type aircrafts is [A]. simple air cooling system [B]. simple evaporative air cooling system [C]. boot-strap air cooling system [D]. all of these Answer: Option C Explanation: No answer description available…

Question: A boot-strap air cooling system has [A]. one heat exchanger [B]. two heat exchangers [C]. three heat exchangers [D]. four heat exchangers Answer: Option B Explanation: No answer description available for this question.

Question: A simple air cooling system is good for __________ flight speeds. [A]. low [B]. high Answer: Option A Explanation: No answer description available for this question.

Question: An ordinary passenger aircraft requires a cooling system of capacity. [A]. 2 TR [B]. 4 TR [C]. 8 TR [D]. 10 TR Answer: Option C Explanation: No answer description available for this question.