Applied Mechanics - Section 1 (5)

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Applied Mechanics - Section 1

If you are looking for important MCQs of Applied Mechanics then you
are at right place. In this section you will get all the important MCQs of this field.

33.

Engineer's units of force, is

A.	Newton in absolute units
B.	Dyne in absolute units
C.	Newton and dyne in absolute units
D.	All the above.

Answer: Option A

Explanation:

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34.

The product of mass and velocity of a moving a body, is called

A.	moment
B.	momentum
C.	power
D.	impulse.

Answer: Option B

Explanation:

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35.

The beam shown in below figure is supported by a hinge at A and a roller at B. The reaction RA of the hinged support A of the beam, is

118-5.253-1

A.	10.8 t
B.	10.6 t
C.	10.4 t
D.	10.2 t.

Answer: Option D

Explanation:

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36.

Which one of the following statements is true ?

A.	The tangent of the angle of friction is equal to coefficeint of friction
B.	The angle of repose is equal to angle of friction
C.	The tangent of the angle of repose is equal to coefficient of friction
D.	All the above.

Answer: Option D

Explanation:

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37.

Parallelogram Law of Forces states, "if two forces acting simultaneously on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, their resultant may be represented in magnitude and direction by

A.	its longer side"
B.	its shorter side"
C.	the diagonal of the parallelogram which does not pass through the point of intersection of the forces"
D.	the diagonal of the parallelogram which passes through the point of intersection of the forces"
E.	half the sum of the diagonals".

Answer: Option D

Explanation:

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38.

The Law of Polygon of Forces states that

A.	if a polygen representing the forces acting at point in a body is closed, the forces are in equilibrium
B.	if forces acting on a point can be represented in magnitde and direction by the sides of a polygon taken in order, then the resultant of the forces will be represented in magnitude and direction by the closing side of the polygon
C.	if forces acting on a point can be represented of a polygon taken in order, their sides of a polygon taken in order, their resultant will be represented in magnitude and direction by the closing side of the polygon, taken in opposite order
D.	if forces acting on a point can be represented in magnitude and direction by the sides of a polygon in order, the forces are in equilibrium.

Answer: Option C

Explanation:

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39.

A particle moves along a straight line such that distance x traversed in t seconds is given by x = t2(t + 1), the acceleration of the particle, will be

A.	3t3 - 2t
B.	3t2 + 2t
C.	6t - 2
D.	6t + 2
E.	3t - 2

Answer: Option D

Explanation:

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40.

A cable loaded with 0.5 tonne per horizontal metre span is stretched between supports in the same horizontal line 400 m apart. If central dip is 20 m, the minimum tension in the cable, will be

A.	200 tonnes at the centre
B.	500 tonnes at the centre
C.	200 tonnes at the right support
D.	200 tonnes at the left support.

Answer: Option B

Explanation:

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Applied Mechanics - Section 1 (5)

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