Theory of Machine
The two elements of a pair are said to form a _________ when they permit relative motion between them.

Kinematic pair
Sliding pair
None of these
Open pair

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Theory of Machine
Pitch point on a cam is

The point on cam pitch curve having the minimum pressure angle
Any point on pitch circle
Any point on pitch curve
The point on cam pitch curve having the maximum pressure angle

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Theory of Machine
In order to give the primary balance of the reciprocating parts of a multi-cylinder inline engines

The algebraic sum of the primary forces must be equal to zero
The algebraic sum of the couples about any point in the plane of the primary forces must be equal to zero
Both (A) and (B)
None of these

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Theory of Machine
A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Remain same as before
Become equal to R/2
Become equal to 2R
Become equal to R/4

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