Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part3 : 16 to 20

Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

16.A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Ammonia

Carbon dioxide

Freon

Brine

Hydrocarbon refrigerant.

17.Where does the lowest temperature occur in a vapour compression cycle ?

condenser

evaporator

compressor

expansion valve

receiver.

18.Aqua ammonia is used as refrigerant in the following type of refrigeration system

compression

direct

indirect

absorption

none of the above.

19.Which of the following is not a desirable property of a refrigerant

high triiscibility with oil

low boiling point

good electrical conductor

large latent heat

non-inflammable.

20.On the pressure-enthalpy diagram, condensation and desuperheating is represented by a horizontal line because the process

involves no change in volume

takes place at constant temperature

takes place at constant entropy

takes place at constant enthalpy

takes place at constant pressure.

More Refrigeration And Air Condition QUESTIONS AND ANSWERS available in next pages

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Mechanical Engineering Questions And Answers :: Refrigeration And Air Condition: part3

Refrigeration And Air Condition QUESTIONS AND ANSWERS

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