Heat Transfer

The emissive power of a body depends upon its___________________?

Byadmin January 24, 2019August 16, 2021

The emissive power of a body depends upon its___________________?

A. temperature
B. wave length
C. physical nature
D. all of the above
E. none of the above

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.

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Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A device used for transfering heat from one fluid to another is called heat exchanger.

Question: A device used for transfering heat from one fluid to another is called heat exchanger.
[A].

True
[B].
False

Answer: Option A

Explanation:

No answer description available for this question.

Read More A device used for transfering heat from one fluid to another is called heat exchanger.
CHEMICAL ENGINEERING | Heat Transfer

Calburn analogy is applicable for the value of Prandtl number from

Question: Calburn analogy is applicable for the value of Prandtl number from
[A].

0.001 to 1
[B].
0.6 to 120
[C].
0.5 to 5
[D].
120 to 400

Answer: Option B

Explanation:

No answer description available for this question.

Read More Calburn analogy is applicable for the value of Prandtl number from
CHEMICAL ENGINEERING | Heat Transfer

A process stream of dilute aqueous solution flowing at the rate of10 Kg.s-1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s-1. A 1 – 1 shell and tube heat exchanger is available. The best arrangement is

Question: A process stream of dilute aqueous solution flowing at the rate of10 Kg.s-1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s-1. A 1 – 1 shell and tube heat exchanger is available. The best arrangement is
[A].

counter flow with process stream on shell side.
[B].
counter flow with process stream on tube side.
[C].
parallel flow with process stream on shell side.
[D].
parallel flow with process stream on tube side.

Answer: Option A

Explanation:

No answer description available for this question.

Read More A process stream of dilute aqueous solution flowing at the rate of10 Kg.s-1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s-1. A 1 – 1 shell and tube heat exchanger is available. The best arrangement is
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In mechanical refrigeration system, the refrigerant has the maximum temperature

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.

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CHEMICAL ENGINEERING | Heat Transfer

__________ paint has the minimum absorption co-efficient.

Question: __________ paint has the minimum absorption co-efficient.
[A].

Black
[B].
White lead
[C].
Grey
[D].
Light cream

Answer: Option B

Explanation:

No answer description available for this question.

Read More __________ paint has the minimum absorption co-efficient.

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