Engineering Mechanics | Mechanical Engineering

An ideal machine is one whose efficiency is

Byadmin September 14, 2022

Question: An ideal machine is one whose efficiency is
[A].

between 60 and 70 %

[B].

between 70 and 80%

[C].

between 80 and 90%

[D].

100%

Answer: Option D

Explanation:

No answer description available for this question.

Compressors | Gas Dynamics and Gas Turbines | Mechanical Engineering

For perfect intercooling in a three stage compressor,

Question: For perfect intercooling in a three stage compressor,
[A].

[B].

[C].
p1p2 = p3p4
[D].
p1p3 = p2p4

Answer: Option A

Explanation:

No answer description available for this question.

Read More For perfect intercooling in a three stage compressor,
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In a parallel flow heat exchanger, the rate of flow of heat and the rate of decrease of temperature are maximum.

Question: In a parallel flow heat exchanger, the rate of flow of heat and the rate of decrease of temperature are maximum.
[A].

Yes
[B].
No

Answer: Option A

Explanation:

No answer description available for this question.

Read More In a parallel flow heat exchanger, the rate of flow of heat and the rate of decrease of temperature are maximum.
Engineering Mechanics | Mechanical Engineering

In a framed structure, as shown in the below figure, the force in the member BC is

Question: In a framed structure, as shown in the below figure, the force in the member BC is
[A].

W/3 (compression)
[B].
W/3 (tension)
[C].
2W/3 (compression)
[D].
2W/3 (tension)

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a framed structure, as shown in the below figure, the force in the member BC is
Engineering Mechanics

The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?

The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?

A. same
B. double
C. half
D. four times
E. one fourth

Read More The M.I. of hollow circular section about a central axis perpendicular to section as compared to its M.I. about horizontal axis is__________________?
Hydraulic Machines | Mechanical Engineering

The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.

Question: The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.
[A].

True
[B].
False

Answer: Option A

Explanation:

No answer description available for this question.

Read More The capacity of a hydraulic accumulator is generally specified as the maximum amount of energy stored.
Engineering Materials | Mechanical Engineering

Pearlite is a combination of 87% ferrite and 13% cementite.

Question: Pearlite is a combination of 87% ferrite and 13% cementite.
[A].

Yes
[B].
No

Answer: Option A

Explanation:

No answer description available for this question.

Read More Pearlite is a combination of 87% ferrite and 13% cementite.

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