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Engineering Mechanics

Engineering Mechanics
A couple produces

Translatory motion
Combined translatory and rotational motion
None of these
Rotational motion

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Engineering Mechanics
The moment of inertia of a thin rod of mass 'm' and length 'l', about an axis through its centre of gravity and perpendicular to its length is

ml2/ 6
ml2/12
ml2/8
ml2/4

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Engineering Mechanics
The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

P = m/W + C
P = mW - C
P = mW + C
P = C - mW

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Engineering Mechanics
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.

Changes periodically
Does not change
Change
None of these

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Engineering Mechanics
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.)

P = W tanα
P = W (cosα + μsinα)
P = W (sinα + μcosα)
P = W tan (α + φ)

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Engineering Mechanics
Whenever a force acts on a body and the body undergoes a displacement, then

Body has kinetic energy of translation
Power is being transmitted
None of these
Work is said to be done

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MORE MCQ ON Engineering Mechanics

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