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Mechanical Engineering

In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.
[A].

True

[B].

False

Answer: Option A

Explanation:

No answer description available for this question.

In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In mechanical refrigeration system, the refrigerant has the maximum temperature

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In mechanical refrigeration system, the refrigerant has the maximum temperature
[A].

in evaporator

[B].

before expansion valve

[C].

between compressor and condenser

[D].

between condenser and evaporator

Answer: Option C

Explanation:

No answer description available for this question.

In mechanical refrigeration system, the refrigerant has the maximum temperature Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

The air cooling system mostly used in transport type aircrafts is

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: The air cooling system mostly used in transport type aircrafts is
[A].

simple air cooling system

[B].

simple evaporative air cooling system

[C].

boot-strap air cooling system

[D].

all of these

Answer: Option C

Explanation:

No answer description available for this question.

The air cooling system mostly used in transport type aircrafts is Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

An ordinary passenger aircraft requires a cooling system of capacity.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: An ordinary passenger aircraft requires a cooling system of capacity.
[A].

2 TR

[B].

4 TR

[C].

8 TR

[D].

10 TR

Answer: Option C

Explanation:

No answer description available for this question.

An ordinary passenger aircraft requires a cooling system of capacity. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In aircraft, air refrigeration Cycle is used because of

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In aircraft, air refrigeration Cycle is used because of
[A].

low weight per tonne of refrigeration

[B].

high heat transfer rate

[C].

low temperature at high altitudes

[D].

higher coefficient of performance

Answer: Option A

Explanation:

No answer description available for this question.

In aircraft, air refrigeration Cycle is used because of Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

In a reversed Brayton cycle, the heat is absorbed by the air during

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: In a reversed Brayton cycle, the heat is absorbed by the air during
[A].

isentropic compression process

[B].

constant pressure cooling process

[C].

isentropic expansion process

[D].

constant pressure expansion process

Answer: Option D

Explanation:

No answer description available for this question.

In a reversed Brayton cycle, the heat is absorbed by the air during Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in __________ power per tonne of refrigeration.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in __________ power per tonne of refrigeration.
[A].

same

[B].

lower

[C].

higher

Answer: Option B

Explanation:

No answer description available for this question.

A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in __________ power per tonne of refrigeration. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning

A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance.

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning /
Question: A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance.
[A].

Agree

[B].

Disagree

Answer: Option A

Explanation:

No answer description available for this question.

A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance. Read More »

Heat Transfer, Mechanical Engineering, Refrigeration and Air Conditioning