Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part2 : 21 to 25
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
21.In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to |
| collect liquid refrigerant and prevent it from going to compressor |
| detect liquid in vapour |
| superheat the vapour |
| collect vapours |
| increase refrigeration effect. |
22.Domestic refrigerator working on vapour compression cycle uses the following type of expansion device |
| electrically operated throttling valve |
| manually operated valve |
| thermostatic valve |
| capillary tube |
| expansion valve. |
23.The vapour pressure of refrigerant should be |
| lower than atmospheric pressure |
| higher than atmospheric pressure |
| equal to atmospheric pressure |
| could be anything |
| none of the above. |
24.At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant |
| decreases |
| increases |
| remains same |
| depends on other factors |
| none of the above. |
More Refrigeration And Air Condition QUESTIONS AND ANSWERS available in next pages
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