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Theory of Machine

Theory of Machine
The size of cam depends upon

Pitch circle
Base circle
Prime circle
Pitch curve

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Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Line or point contact
Body contact
None of these
Surface contact

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Theory of Machine
The velocity of any point in mechanism relative to any other point on the mechanism on velocity polygon is represented by the line

At 45° to line as per (A)
Perpendicular to line as per (A)
Joining the corresponding points
Not possible to determine with these data

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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
Theory of machines
Kinematics
Mechanisms

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Theory of Machine
Longitudinal vibrations are said to occur when the particles of a body moves

Parallel to its axis
None of these
In a circle about its axis
Perpendicular to its axis

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Theory of Machine
In the below figure, PC is the connecting rod and OC is the crank making an angle θ with the line of stroke PO and rotates with uniform angular velocity at ω rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO. The acceleration of the piston P with respect to the crank-pin C is given by

ω² × QN
ω² × CN
ω² × CO
ω² × NO

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