Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part2 : 11 to 15
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
11.The bank of tubes at the back of domestic refrigerator are |
| condenser tubes |
| evaporator tubes |
| refrigerant cooling tubes |
| capillary tubes |
| throttling device. |
12.The value of COP in vapour compression cycle is usually |
| always less than unity |
| always more than unity |
| equal to unity |
| any one of the above |
| none of the above. |
13.Absorption system normally uses the following refrigerant |
| Freon-11 |
| Freon-22 |
| C02 |
| S02 |
| ammonia. |
14.One of the purposes of sub-cooling the liquid refrigerant is to |
| reduce compressor overheating |
| reduce compressor discharge tempera-ture |
| increase cooling effect |
| ensure that only liquid and not the vapour enters the expansion (throttling) valve |
| none of the above. |
15.The domestic refrigerator uses following type of compressor |
| centrifugal |
| axial |
| miniature sealed unit |
| piston type reciprocating |
| none of the above. |
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