Mechanical Engineering : Refrigeration And Air Condition QUESTIONS AND ANSWERS :: part3 : 1 to 5
Following Mechanical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
1.If a heat pump cycle operates between the condenser temperature of +27�C and evaporator temperature of - 23�C, then the Carnot COP will be |
| 0.2 |
| 1.2 |
| 5 |
| 6 |
| 10. |
2.Choose the correct statement |
| A refrigerant should have low latent heat |
| If operating temperature of system is low, then refrigerant with low boiling point should be used |
| Precooling and subcooling bf refrigerant are same |
| Superheat and sensible heat of a. refrigerant are same |
| Refrigerant is inside the lubes in case of a direct-expansion chiller. |
3.In vapour compression cycle using NH3 as refrigerant, initial charge is filled at |
| suction of compressor |
| delivery of compressor |
| high pressure side colse to receiver |
| low pressure side near receiver |
| anywhere in the cycle. |
4.Highest pressure encountered in a refrigeration system should be |
| critical pressure of refrigerant |
| much below critical pressure |
| much above critical pressure |
| near critical pressure |
| there is no such restriction. |
5.Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system |
| strong solution to weak solution |
| weak solution to strong solution |
| strong solution to ammonia vapour |
| ammonia vapour to weak solution |
| ammonia vapour to strong solution. |
More Refrigeration And Air Condition QUESTIONS AND ANSWERS available in next pages
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