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Heat Transfer

A condenser is used in the __________ pressure side of a refrigerating system.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: A condenser is used in the __________ pressure side of a refrigerating system.
[A].

low

[B].

high

Answer: Option B

Explanation:

No answer description available for this question.

A condenser is used in the __________ pressure side of a refrigerating system. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be
[A].

lack of cooling water

[B].

water temperature being high

[C].

dirty condenser surface

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is
[A].

reciprocating

[B].

rotating

[C].

centrifugal

[D].

screw

Answer: Option C

Explanation:

No answer description available for this question.

For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

A refrigerant compressor is used to

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: A refrigerant compressor is used to
[A].

raise the pressure of the refrigerant

[B].

raise the temperature of the refrigerant

[C].

circulate the refrigerant through the refrigerating system

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

A refrigerant compressor is used to Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Moisture should be removed from refrigerants to avoid

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Moisture should be removed from refrigerants to avoid
[A].

freezing at the expansion valve

[B].

restriction to refrigerant flow

[C].

corrosion of steel plates

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Moisture should be removed from refrigerants to avoid Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Which of the following refrigerant has the maximum ozone depletion potential in the stratophere?

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Which of the following refrigerant has the maximum ozone depletion potential in the stratophere?
[A].

Ammonia

[B].

Carbon dioxide

[C].

Sulphur dioxide

[D].

Flourine

Answer: Option D

Explanation:

No answer description available for this question.

Which of the following refrigerant has the maximum ozone depletion potential in the stratophere? Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

Environmental protection agencies advice against the use of chloro-fluoro-carbon refrigerants since

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: Environmental protection agencies advice against the use of chloro-fluoro-carbon refrigerants since
[A].

these react with water vapour and cause acid rain

[B].

these react with plants and cause green-house effect

[C].

these react with oxygen and cause its depletion

[D].

these react with ozone layer

Answer: Option D

Explanation:

No answer description available for this question.

Environmental protection agencies advice against the use of chloro-fluoro-carbon refrigerants since Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

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

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: 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:

No answer description available for this question.

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

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning