7) In a refrigeration cycle, a capillary tube is used

to produce cooling effect

to control the temperature refrigerated space

to convert refrigerant from liquid to vapour state

to control the flow of refrigerant

Answer is:

to control the flow of refrigerant

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

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8) Ammonia is preferred as refrigerant in large commercial installations because

it has low latent heat

it is non-toxic

it is relatively cheap

it has low working pressure

Answer is:

it is relatively cheap

9) In order to obtain high C.O.P. pressure range of compressor should be

low

high

optimum

any value

Answer is:

low

10) The diameter of the suction pipe of refrigerating unit compressor, in comparision to delivery side is

Bigger

Smaller

Equal

Unpredictable

Answer is:

Bigger

11) A perfect at 27 degree celsius is heated at constant pressure till its volume is double. The final temperature is

108 degree celsius

654 degree celsius

327 degree celsius

54 degree celsius

Answer is:

54 degree celsius

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

For more MCQ's Click Here

7) In a refrigeration cycle, a capillary tube is used

to control the flow of refrigerant

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

Related ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key

8) Ammonia is preferred as refrigerant in large commercial installations because

it is relatively cheap

9) In order to obtain high C.O.P. pressure range of compressor should be

low

10) The diameter of the suction pipe of refrigerating unit compressor, in comparision to delivery side is

Bigger

11) A perfect at 27 degree celsius is heated at constant pressure till its volume is double. The final temperature is

54 degree celsius

ISRO Technician-B MRAC Question Paper - 2017 (Set -1) with Answer Key