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Theory of Machine

Theory of Machine
The number of centers in a crank driven slider crank mechanism is

4
6
2

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Theory of Machine
Idler pulley is used

All of the listed here
For applying tension
For changing the direction of motion of the belt
For increasing velocity ratio

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Theory of Machine
The axis of precession is __________ to the plane in which the axis of spin is going to rotate.

None of these
Perpendicular
Both A and B
Parallel

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Theory of Machine
Minimum number of teeth for involute rack and pinion arrangement for pressure angle of 20° is

30
20
10
34

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Theory of Machine
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W (sin α + μ cos α)
P = W tan (α + φ)
P = W (cos α + μ sin α)
P = W tan α

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Theory of Machine
Which of the following disciplines provides study of relative motion between the parts of a machine?

Applied mechanics
Kinematics
Theory of machines
Mechanisms

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