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Heat Transfer

In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid.

CHEMICAL ENGINEERING, Heat Transfer /
Question: In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid.
[A].

nucleate

[B].

pool

[C].

low pressure

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

In case of __________ boiling, the bubbles formed on a submerged hot surface get absorbed in the mass of the liquid. Read More »

CHEMICAL ENGINEERING, Heat Transfer

Heat transfer by __________ may not necessarily require the presence of a medium.

CHEMICAL ENGINEERING, Heat Transfer /
Question: Heat transfer by __________ may not necessarily require the presence of a medium.
[A].

conduction

[B].

natural convection

[C].

forced convection

[D].

radiation

Answer: Option D

Explanation:

No answer description available for this question.

Heat transfer by __________ may not necessarily require the presence of a medium. Read More »

CHEMICAL ENGINEERING, Heat Transfer

It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is

CHEMICAL ENGINEERING, Heat Transfer /
Question: It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is
[A].

&gt 0.75

[B].

< 0.75

[C].

< 0.50

[D].

< 0.25

Answer: Option B

Explanation:

No answer description available for this question.

It is not recommended to use a 1-2 shell and tube heat exchanger for a particular heat duty, whenever the LMTD correction factor is Read More »

CHEMICAL ENGINEERING, Heat Transfer

In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell)

CHEMICAL ENGINEERING, Heat Transfer /
Question: In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell)
[A].

0.25 D

[B].

0.75 D

[C].

0.50 D

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) Read More »

CHEMICAL ENGINEERING, Heat Transfer

For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are

CHEMICAL ENGINEERING, Heat Transfer /
Question: For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are
[A].

same

[B].

different

[C].

never different

[D].

linearly related

Answer: Option B

Explanation:

No answer description available for this question.

For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are Read More »

CHEMICAL ENGINEERING, Heat Transfer

For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is

CHEMICAL ENGINEERING, Heat Transfer /
Question: For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is
[A].

3

[B].

0.33

[C].

1

[D].

1.33

Answer: Option C

Explanation:

No answer description available for this question.

For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is Read More »

CHEMICAL ENGINEERING, Heat Transfer

The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as

CHEMICAL ENGINEERING, Heat Transfer /
Question: The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as
[A].

ha = 0.8hL

[B].

ha = 2hL

[C].

ha = hL

[D].

ha = 5hL

Answer: Option B

Explanation:

No answer description available for this question.

The average heat transfer co-efficient over the entire length of the plate (ha) and the local heat transfer co-efficient (hL), in case of heat transfer over a flat plate in lminar zone is related as Read More »

CHEMICAL ENGINEERING, Heat Transfer