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Engineering Mechanics

Engineering Mechanics
The centre of percussion is below the centre of gravity of the body and is at a distance equal to

h × kG
h/kG
h2/kG
kG2/h

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

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Engineering Mechanics
The maximum frictional force which comes into play when a body just begins to slide over another surface is called

Kinematic friction
Limiting friction
Rolling friction
Sliding friction

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Engineering Mechanics
The forces, which meet at one point, but their lines of action do not lie in a plane, are called

Non-coplanar concurrent forces
Non-coplanar non-concurrent forces
Coplanar non-concurrent forces
Intersecting forces

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of gravity
Center of mass
Moment of inertia
Center of percussion

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Engineering Mechanics
When the spring of a watch is wound, it will possess

Strain energy
Heat energy
Electrical energy
Kinetic energy

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MORE MCQ ON Engineering Mechanics

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