Engineering Mechanics | Mechanical Engineering

Coefficient of friction depends upon

Byadmin September 14, 2022

Question: Coefficient of friction depends upon
[A].

area of contact only

[B].

nature of surface only

[C].

both (a) and (b)

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Engineering Materials | Mechanical Engineering

Which of the following solids are malleable and ductile?

Question: Which of the following solids are malleable and ductile?
[A].

Ionic solids
[B].
Covalent solids
[C].
Metallic solids
[D].
none of these

Answer: Option C

Explanation:

No answer description available for this question.

Read More Which of the following solids are malleable and ductile?
Automobile Engineering | Mechanical Engineering

In a square type engine

Question: In a square type engine
[A].

geometrical shape is square
[B].
diameter and length of piston are same
[C].
two cylinders are placed horizontal and two vertical
[D].
stroke length and cylinder bore are same

Answer: Option D

Explanation:

No answer description available for this question.

Read More In a square type engine
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

Conduction is the process of heat transfer from one particle of the body to another by the actual motion of the heated particles.

Question: Conduction is the process of heat transfer from one particle of the body to another by the actual motion of the heated particles.
[A].

True
[B].
False

Answer: Option B

Explanation:

No answer description available for this question.

Read More Conduction is the process of heat transfer from one particle of the body to another by the actual motion of the heated particles.
Heat Transfer | Mechanical Engineering | Refrigeration and Air Conditioning

A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

Question: A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be
[A].

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

Answer: Option D

Explanation:

No answer description available for this question.

Read More A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be
Engineering Mechanics | Mechanical Engineering

Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Question: Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
[A].

nine times
[B].
six times
[C].
four times
[D].
two times

Answer: Option A

Explanation:

No answer description available for this question.

Read More Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.
Engineering Mechanics | Mechanical Engineering

If a number of forces are acting at a point, their resultant is given by

Question: If a number of forces are acting at a point, their resultant is given by
[A].

(∑V)2 + (∑H)2
[B].

[C].
(∑V)2 +(∑H)2 +2(∑V)(∑H)
[D].

Answer: Option B

Explanation:

No answer description available for this question.

Read More If a number of forces are acting at a point, their resultant is given by

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