For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference ™ for parallel flow is __________ that for counter flow.

Byadmin September 14, 2022

Question: For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference ™ for parallel flow is __________ that for counter flow.
[A].

equal to

[B].

less than

[C].

greater than

Answer: Option A

Explanation:

No answer description available for this question.

Hydraulic Machines | Mechanical Engineering

If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by

Question: If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
[A].

H = Hg/hf
[B].
H = Hg x hf
[C].
H = Hg + hf
[D].
H = Hg – hf

Answer: Option D

Explanation:

No answer description available for this question.

Read More If Hg is the gross or total head and hf is the head lost due to friction, then net or effective head (H) is given by
Hydraulics and Fluid Mechanics | Mechanical Engineering

In a venturiflume, the flow takes place at

Question: In a venturiflume, the flow takes place at
[A].

atmospheric pressure
[B].
gauge pressure
[C].
absolute pressure
[D].
none of these

Answer: Option A

Explanation:

No answer description available for this question.

Read More In a venturiflume, the flow takes place at
Automobile Engineering | Mechanical Engineering

In a four wheel drive (4WD), the number of gear boxes are

Question: In a four wheel drive (4WD), the number of gear boxes are
[A].

1
[B].
2
[C].
3
[D].
4

Answer: Option B

Explanation:

No answer description available for this question.

Read More In a four wheel drive (4WD), the number of gear boxes are
Engineering Mechanics | Mechanical Engineering

Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.

Question: Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.
[A].

two times
[B].
same
[C].
half

Answer: Option A

Explanation:

No answer description available for this question.

Read More Moment of inertia of a hollow circular section, as shown in the below figure about an axis perpendicular to the section, is __________ than that about X-X axis.
Engineering Mechanics | Mechanical Engineering

The angle which the normal reaction makes with the resultant reaction is called angle of friction.

Question: The angle which the normal reaction makes with the resultant reaction is called angle of friction.
[A].

Agree
[B].
Disagree

Answer: Option A

Explanation:

No answer description available for this question.

Read More The angle which the normal reaction makes with the resultant reaction is called angle of friction.
CHEMICAL ENGINEERING | Heat Transfer

A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of materialA is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C.

Question: A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of materialA is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C.
[A].

6
[B].
12
[C].
18
[D].
24

Answer: Option B

Explanation:

No answer description available for this question.

Read More A wall has two layers of materials A and B; each made of a different material. Both the layers have the same thickness. The thermal conductivity of materialA is twice that of B. Under the equilibrium, the temperature difference across the wall is 36°C. The temperature difference across the layer A is __________ °C.

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