Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

6. 

In a vapour compression system, the condition of refrigerant is dry saturated vapour

A. before entering the compressor
B. after leaving the compressor
C. before entering the condenser
D. after leaving the condenser

Answer: Option A

Explanation:

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7. 

An evaporator is also known as

A. freezing coil
B. cooling coil
C. chilling coil
D. all of these

Answer: Option D

Explanation:

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8. 

The rate of heat flow through a body is . The term is known as temperature gradient.

A. Yes
B. No

Answer: Option A

Explanation:

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9. 

Oil separator in a refrigeration cycle is installed

A. before compressor
B. between compressor and condenser
C. between condenser and evaporator
D. between condenser and expansion valve

Answer: Option B

Explanation:

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10. 

In larger industrial and commercial reciprocating compression systems, refrigerent widely used is

A. ammonia
B. carbon dioxide
C. sulphur dioxide
D. R-12

Answer: Option A

Explanation:

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