An infinite parallel planes with emissivities e1 and e2, the interchange factor for radiation from surface 1 to surface 2 is given by

Byadmin September 14, 2022

Question: An infinite parallel planes with emissivities e1 and e2, the interchange factor for radiation from surface 1 to surface 2 is given by
[A].

[B].

[C].

e1 + e2

[D].

e1e2

Answer: Option A

Explanation:

No answer description available for this question.

CHEMICAL ENGINEERING | Heat Transfer

If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will

Question: If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will
[A].

increase by 1.8 times
[B].
decrease by 22
[C].
increase by 216
[D].
remain unchanged

Answer: Option C

Explanation:

No answer description available for this question.

Read More If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will
Refrigeration and Air Conditioning

Accumulators should have adequate volume to store refrigerant charge at least_________________?

Accumulators should have adequate volume to store refrigerant charge at least_________________?

A. 10%
B. 25%
C. 50%
D. 75%
E. 100%

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CHEMICAL ENGINEERING | Heat Transfer

If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length

Question: If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length
[A].

ha = hl
[B].
ha = 2hl
[C].
ha = 0.5 hl
[D].
ha = 0.75 hl

Answer: Option B

Explanation:

No answer description available for this question.

Read More If average heat transfer co-efficient is ha and the local coefficient at the end of the plate is hl then in case of heat transfer to a fluid flowing over a flat plate, heated over its entire length
Ic Engines And Nuclear Power Plants | Mechanical Engineering

Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has

Question: Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
[A].

high neutron absorption cross-section
[B].
low moderating efficiency
[C].
high neutron scatter cross-section
[D].
low neutron absorption cross-section

Answer: Option B

Explanation:

No answer description available for this question.

Read More Enriched uranium is required as a fuel in a nuclear reactor, if light water is used as moderator and coolant, because light water has
Hydraulics and Fluid Mechanics | Mechanical Engineering

In case of flow through parallel pipes,

Question: In case of flow through parallel pipes,
[A].

the head loss for all the pipes is same
[B].
the total discharge is equal to the sum of discharges in the various pipes
[C].
the total head loss is the sum of head losses in the various pipes
[D].
Both (A) and (B)

Answer: Option D

Explanation:

No answer description available for this question.

Read More In case of flow through parallel pipes,
Engineering Mechanics | Mechanical Engineering

A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act

Question: A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act
[A].

towards the wall at its upper and
[B].
away from the wall at its upper end
[C].
downward at its upper end
[D].
upward at its upper end

Answer: Option D

Explanation:

No answer description available for this question.

Read More A ladder is resting on a smooth ground and leaning against a rough vertical wall. The force of friction will act

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