R.A.C. - Question & Answer with solution in Hindi & English

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Mechanical Engineering : R.A.C. Question & Answer in English

21.	A refrigerant with highest critical pressure is -

	A. Carbon-dioxide	B. Ammonia
	C. Freon-11	D. Freon-22
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : B Solution : Ammonia Report error Hide Error Report Box

22.	The leakage in a refrigeration system using Freon is detected by

	A. Soap and water	B. Sulphur sticks
	C. Halide torch	D. All of the above
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : C Solution : Halide torch Report error Hide Error Report Box

23.	In order to obtain high C.O.P., the pressure range of compressor should be

	A. Low	B. High
	C. Optimum	D. Any value
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : A Solution : Low Report error Hide Error Report Box

24.	The refrigerant commonly used in commercial ice plants.

	A. Brine	B. Water
	C. Ammonia	D. Freon - 12
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : B Solution : Water Report error Hide Error Report Box

25.	Leakage in the refrigeration system using ammonia as refrigerant is detected by

	A. Soap and water	B. Burning candle
	C. Sulphur sticks	D. Halide torch
	View Answer Solution Report Error
	Answer & Solution Hide Solution Box Answer : C Solution : Sulphur sticks Report error Hide Error Report Box

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