According to Stefan’s law, the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature.

Byadmin September 14, 2022

Question: According to Stefan’s law, the total radiation from a black body per second per unit area is directly proportional to the fourth power of the absolute temperature.
[A].

Correct

[B].

Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Hydraulic Machines | Mechanical Engineering

Kinematic similarity is said to exist between the model and the prototype, if both of them

Question: Kinematic similarity is said to exist between the model and the prototype, if both of them
[A].

have identical velocities
[B].
are equal in size and shape
[C].
are identical in shape, but differ only in size
[D].
have identical forces

Answer: Option A

Explanation:

No answer description available for this question.

Read More Kinematic similarity is said to exist between the model and the prototype, if both of them
Hydraulics and Fluid Mechanics | Mechanical Engineering

A structure used to dam up a stream or river over which the water flows is called

Question: A structure used to dam up a stream or river over which the water flows is called
[A].

orifice
[B].
notch
[C].
weir
[D].
dam

Answer: Option C

Explanation:

No answer description available for this question.

Read More A structure used to dam up a stream or river over which the water flows is called
Engineering Mechanics | Mechanical Engineering

Non-coplaner non-concurrent forces are those forces which

Question: Non-coplaner non-concurrent forces are those forces which
[A].

meet at one point, but their lines of action do not lie on the same plane
[B].
do not meet at one point and their lines of action do not lie on the same plane
[C].
do not meet at one point but their lines of action lie on the same plane
[D].
none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Read More Non-coplaner non-concurrent forces are those forces which
Hydraulics and Fluid Mechanics | Mechanical Engineering

All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.

Question: All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.
[A].

Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Read More All the gases are considered to have compressible flow and all the liquids are considered to have incompressible flow.
CHEMICAL ENGINEERING | Heat Transfer

Maximum heat transfer rate is achieved in __________ flow.

Question: Maximum heat transfer rate is achieved in __________ flow.
[A].

co-current
[B].
counter-current
[C].
turbulent
[D].
laminar

Answer: Option C

Explanation:

No answer description available for this question.

Read More Maximum heat transfer rate is achieved in __________ flow.
CHEMICAL ENGINEERING | Heat Transfer

At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the

Question: At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the
[A].

buffer zone
[B].
turbulent core
[C].
both (a) and (b)
[D].
viscous sub-layer

Answer: Option D

Explanation:

No answer description available for this question.

Read More At Pr > 1, conduction in an ordinary fluid flowing through a heated pipe is limited to the

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