Refrigeration and Air Conditioning

Rating of a domestic refrigerator is of the order of__________________?

Byadmin January 25, 2019August 16, 2021

Rating of a domestic refrigerator is of the order of__________________?

A. 0.1 ton
B. 5 tons
C. 10 tons
D. 40 tons
E. 100 tons

Refrigeration and Air Conditioning

The leaks in a refrigeration system using Freon are detected by____________________?

The leaks in a refrigeration system using Freon are detected by____________________?

A. halide torch which on detection produces greenish flame lighting
B. sulphur sticks which on detection gives white smoke
C. using reagents
D. smelling
E. sensing reduction in pressure

Read More The leaks in a refrigeration system using Freon are detected by____________________?
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied is

Question: For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied is
[A].

zero
[B].
20
[C].
50
[D].
100

Answer: Option D

Explanation:

No answer description available for this question.

Read More For air conditioning the operation theatre in a hospital, the percentage of outside air in the air supplied is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A perfect black body is one which

Question: A perfect black body is one which
[A].

is black in colour
[B].
absorbs heat radiations of all wave lengths falling on it
[C].
reflects all the heat radiations
[D].
transmits the heat radiations

Answer: Option B

Explanation:

No answer description available for this question.

Read More A perfect black body is one which
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

Degree of saturation or percentage humidity is

Question: Degree of saturation or percentage humidity is
[A].

the mass of water vapour present in 1 m3 of dry air
[B].
the mass of water vapour present in 1 kg of dry air
[C].
the ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure.
[D].
the ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure

Answer: Option C

Explanation:

No answer description available for this question.

Read More Degree of saturation or percentage humidity is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

Question: A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
[A].

1 kW
[B].
2 kW
[C].
3 kW
[D].
4 kW

Answer: Option D

Explanation:

No answer description available for this question.

Read More A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

During sensible heating of air, specific humidity remains constant.

Question: During sensible heating of air, specific humidity remains constant.
[A].

Agree
[B].
Disagree

Answer: Option A

Explanation:

No answer description available for this question.

Read More During sensible heating of air, specific humidity remains constant.

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