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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigerator works on

Both (A) and (B)
None of these
Reversed Carnot cycle
Bell Coleman cycle

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Refrigeration and Air Conditioning
Which of the following statement is correct for ammonia as a refrigerant?

It reacts with copper and its alloys.
All of these
It requires large displacement per TR compared to fluoro carbons.
It is toxic to mucous membranes.

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant is dry saturated vapour

After leaving the condenser
Before entering the compressor
After leaving the compressor
Before entering the condenser

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Refrigeration and Air Conditioning
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

O.P)P = (
O.P.)R + 2
O.P.)P = (
(
O.P)R - 1
O.P)P = (
O.P)R
(
O.P.)R + 1
(
O.P.)P = (
(

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Increases C.O.P
Decreases C.O.P
O.P remains unaltered
Other factors decide C.O.P

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Depends upon the make
Is equal to 1
Is less than 1
Is more than 1

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MORE MCQ ON Refrigeration and Air Conditioning

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