Engineering Mechanics | Mechanical Engineering

If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.

Byadmin September 14, 2022

Question: If the efficiency of a lifting machine is kept constant, its velocity ratio is __________ propotional to its mechanical advantage.
[A].

directly

[B].

inversely

Answer: Option A

Explanation:

No answer description available for this question.

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.
Ic Engines And Nuclear Power Plants | Mechanical Engineering

A fuel will detonate less if it has higher self ignition temperature.

Question: A fuel will detonate less if it has higher self ignition temperature.
[A].
True
[B].
False

Answer: Option A

Explanation:

No answer description available for this question.

Read More A fuel will detonate less if it has higher self ignition temperature.
Hydraulics and Fluid Mechanics | Mechanical Engineering

According to Chezy’s formula, the discharge through an open channel is (where A = Area of flow, C = Chezy’s constant, m = Hydraulic mean depth, and i = Uniform slope in bed)

Question: According to Chezy’s formula, the discharge through an open channel is (where A = Area of flow, C = Chezy’s constant, m = Hydraulic mean depth, and i = Uniform slope in bed)
[A].
A m x i
[B].
C m x i
[C].
AC m x i
[D].
mi A x C

Answer: Option C

Explanation:

No answer description available for this question.

Read More According to Chezy’s formula, the discharge through an open channel is (where A = Area of flow, C = Chezy’s constant, m = Hydraulic mean depth, and i = Uniform slope in bed)
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

In larger industrial and commercial reciprocating compression systems, refrigerent widely used is

Question: In larger industrial and commercial reciprocating compression systems, refrigerent widely used is
[A].
ammonia
[B].
carbon dioxide
[C].
sulphur dioxide
[D].
R-12

Answer: Option A

Explanation:

No answer description available for this question.

Read More In larger industrial and commercial reciprocating compression systems, refrigerent widely used is
Mechanical Engineering | Production Engineering

In metal machining, the work-tool contact zone is a zone where heat is generated due to

Question: In metal machining, the work-tool contact zone is a zone where heat is generated due to
[A].
plastic deformation of metal
[B].
burnishing friction
[C].
friction between the moving chip and the tool face
[D].
none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Read More In metal machining, the work-tool contact zone is a zone where heat is generated due to
Automobile Engineering | Mechanical Engineering

In a spark plug, when the temperature of the central electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off carbon starts is referred to as the self cleaning temperature.

Question: In a spark plug, when the temperature of the central electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off carbon starts is referred to as the self cleaning temperature.
[A].
Correct
[B].
Incorrect

Answer: Option A

Explanation:

No answer description available for this question.

Read More In a spark plug, when the temperature of the central electrode exceeds a certain temperature, any carbon that has adhered will be burnt off, and the temperature at which this burning off carbon starts is referred to as the self cleaning temperature.

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