Ic Engines And Nuclear Power Plants | Mechanical Engineering

In a four stroke cycle diesel engine, the exhaust valve

Byadmin September 14, 2022

Question: In a four stroke cycle diesel engine, the exhaust valve
[A].

opens at 30° before bottom dead cnetre and closes at 10° after top dead centre

[B].

opens at 30° after bottom dead centre and closes at 10° before top dead centre

[C].

opens at bottom dead centre and closes at top dead centre

[D].

may open and close anywhere

Answer: Option A

Explanation:

No answer description available for this question.

Engineering Mechanics | Mechanical Engineering

Coplaner concurrent forces are those forces which

Question: Coplaner 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].
meet at one point and their lines of action also lie on the same plane
[D].
do not meet at one point, but their lines of action lie on the same plane

Answer: Option C

Explanation:

No answer description available for this question.

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Engineering Materials | Mechanical Engineering

In spheroidising process, the steel is

Question: In spheroidising process, the steel is
[A].

heated below the lower critical temperature and then cooled slowly
[B].
heated upto the lower critical temperature and then cooled in still air
[C].
heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C
[D].
none of the above

Answer: Option C

Explanation:

No answer description available for this question.

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Industrial Engineering And Production Management | Mechanical Engineering

A diagram showing the path followed by men and materials while performing a task is known as

Question: A diagram showing the path followed by men and materials while performing a task is known as
[A].

string diagram
[B].
flow process chart
[C].
travel chart
[D].
flow diagram

Answer: Option D

Explanation:

No answer description available for this question.

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Hydraulics and Fluid Mechanics | Mechanical Engineering

A manometer is used to measure

Question: A manometer is used to measure
[A].

atmospneric pressure
[B].
pressure in pipes and channels
[C].
pressure in venturimeter
[D].
difference of pressures between two points in a pipe

Answer: Option B

Explanation:

No answer description available for this question.

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Compressors | Gas Dynamics and Gas Turbines | Mechanical Engineering

A gas turbine used in air-craft should have low weight and small frontal area.

Question: A gas turbine used in air-craft should have low weight and small frontal area.
[A].

Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

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Engineering Materials | Mechanical Engineering

White cast iron has a high tensile strength and a low compressive strength.

Question: White cast iron has a high tensile strength and a low compressive strength.
[A].

Yes
[B].
No

Answer: Option B

Explanation:

White cast iron has a low tensile strength and a high compressive strength.

Source: https://en.wikipedia.org/wiki/Cast_iron#Table_of_comparative_qualities_of_cast_irons

Read More White cast iron has a high tensile strength and a low compressive strength.

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