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Theory of Machine

Theory of Machine
The relative velocity of B with respect to A in a rigid link AB is

At 45° to AB
Along AB
Perpendicular to AB
Parallel to AB

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Theory of Machine
The frictional torque transmitted in a conical pivot bearing, considering uniform pressure, is (where R = Radius of shaft, and α = Semi-angle of the cone)

μ W R cosecα
(3/4) μ W R cosecα
(1/2) μ W R cosecα
(2/3) μ W R cosecα

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Theory of Machine
The Coriolis component of acceleration depends upon

Angular velocity of the link
Both (A) and (B)
Velocity of slider
None of these

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Theory of Machine
When the nature of contact between the elements of a pair is such that one element can turn about the other by screw threads, the pair is known as a

Sliding pair
Screw pair
Spherical pair
Turning pair

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Theory of Machine
A completely constrained motion can be transmitted with.

4 links with pin joints
1 link with pin joints
3 links with pin joints
2 links with pin joints

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Theory of Machine
Which of the following mechanisms produces mathematically an exact straight line motion?

Peaucellier's mechanism
Grasshopper mechanism
Watt mechanism
Tchebicheff mechanism

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