Heat Transfer

Thermal conductivity of solid metals with rise in temperature normally___________________?

Byadmin January 24, 2019August 16, 2021

Thermal conductivity of solid metals with rise in temperature normally___________________?

A. increases
B. decreases
C. remains constant
D. may increase or decrease depending on temperature
E. unpredictable

CHEMICAL ENGINEERING | Heat Transfer

is termed as the __________ number.

Question: is termed as the __________ number.
[A].

Grashoff
[B].
Nusselt
[C].
Prandtl
[D].
Stanton

Answer: Option C

Explanation:

No answer description available for this question.

Read More is termed as the __________ number.
CHEMICAL ENGINEERING | Heat Transfer

An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a

Question: An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a
[A].

boiler
[B].
heat exchanger
[C].
recuperator
[D].
regenerator

Answer: Option B

Explanation:

No answer description available for this question.

Read More An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A thermostatic expansion valve in a refrigeration system

Question: A thermostatic expansion valve in a refrigeration system
[A].

ensures the evaporator completely filled with refrigerant of the load
[B].
is suitable only for constant load systems
[C].
maintains different temperatures in evaporator in proportion to load
[D].
none of the above

Answer: Option A

Explanation:

No answer description available for this question.

Read More A thermostatic expansion valve in a refrigeration system
CHEMICAL ENGINEERING | Heat Transfer

Graetz number is given by

Question: Graetz number is given by
[A].

[B].

[C].

[D].

Answer: Option A

Explanation:

No answer description available for this question.

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CHEMICAL ENGINEERING | Heat Transfer

Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second.

Question: Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second.
[A].

3 x l05
[B].
3 x l08
[C].
3 x l010
[D].
3 x l012

Answer: Option B

Explanation:

No answer description available for this question.

Read More Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In aqua-ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Question: In aqua-ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in
[A].

condenser
[B].
evaporator
[C].
absorber
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More In aqua-ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

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