Refrigeration and Air Conditioning - Interview Questions | Exam2Win

Take a timed mock test specifically for Refrigeration and Air Conditioning.

46. Choose the correct statement

A. A refrigerant should have low latent heat

B. If operating temperature of system is low, then refrigerant with low boiling point should be used

C. Precooling and subcooling bf refrigerant are same

D. Superheat and sensible heat of a. refrigerant are same

E. Refrigerant is inside the lubes in case of a direct-expansion chiller.

Explanation:

47. In vapour compression cycle using NH3 as refrigerant, initial charge is filled at

A. suction of compressor

B. delivery of compressor

C. high pressure side colse to receiver

D. low pressure side near receiver

E. anywhere in the cycle.

Explanation:

48. Highest pressure encountered in a refrigeration system should be

A. critical pressure of refrigerant

B. much below critical pressure

C. much above critical pressure

D. near critical pressure

E. there is no such restriction.

Explanation:

49. Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system

A. strong solution to weak solution

B. weak solution to strong solution

C. strong solution to ammonia vapour

D. ammonia vapour to weak solution

E. ammonia vapour to strong solution.

Explanation:

50. One ton of the refrigeration is

A. the standard unit used in refrigeration problems

B. the cooling effect produced by melting 1 ton of ice

C. the refrigeration effect to freeze 1 ton of water at 0�C into ice at 0�C in 24 hours

D. the refrigeration effect to produce 1 ton of ice at NTP conditions

E. the refrigeration effect to produce 1 ton of ice in 1 hour time.

Explanation:

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