Question: Coefficient of friction depends upon
[A].area of contact only
nature of surface only
both (a) and (b)
none of these
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
admin
Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.
Question: Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.
[A].Yes
No
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
Question: A body of weight W is required to move up on rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by(where μ = tanφ = Coefficient of friction between the plane and the body.)
[A].P = W tanα
P = W tan(α + φ)
P = W (sinα + μcosα)
P = W (cosα + μsinα)
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.
Question: A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.
[A].equal to
less than
greater than
[A].
[B].
[C].
Answer: Option C
Explanation:
No answer description available for this question.
The angle of inclination of the plane at which the body begins to move down the plane, is called
Question: The angle of inclination of the plane at which the body begins to move down the plane, is called
[A].angle of friction
angle of repose
angle of projection
none of these
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
The angle which the normal reaction makes with the resultant reaction is called angle of friction.
Question: The angle which the normal reaction makes with the resultant reaction is called angle of friction.
[A].Agree
Disagree
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
The angle of the inclined plane at which a body just begins to slide down the plane, is called helix angle.
Question: The angle of the inclined plane at which a body just begins to slide down the plane, is called helix angle.
[A].True
False
[A].
[B].
Answer: Option B
Explanation:
No answer description available for this question.
A force acting in the opposite direction to the motion of the body is called force of friction.
Question: A force acting in the opposite direction to the motion of the body is called force of friction.
[A].Agree
Disagree
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
The catalysts are used to accelerate the chemical reaction during the process of ploymerisation of plastics.
Question: The catalysts are used to accelerate the chemical reaction during the process of ploymerisation of plastics.
[A].True
False
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Incoloy, Hastelloy and Vitallium are __________ temperature alloys.
Question: Incoloy, Hastelloy and Vitallium are __________ temperature alloys.
[A].high
low
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.