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Theory of Machine

Theory of Machine
For fluctuating loads, well suited bearing is

Ball bearing
Roller bearing
Thrust bearing
Needle roller bearing

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Theory of Machine
A circular bar moving in a round hole is an example of

Incompletely constrained motion
Successfully constrained motion
Partially constrained motion
Completely constrained motion

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Theory of Machine
A slider crank chain consists of following numbers of turning and sliding pairs

2, 2
1, 3
3, 1
4, 0

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Theory of Machine
The natural frequency of free transverse vibrations due to a point load acting over a simply supported shaft is equal to (where δ = Static deflection of a simply supported shaft due to the point load)

0.571/√δ
0.4985/√δ
0.5615/√δ
0.6253/√δ

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Theory of Machine
When the relation between the controlling force (Fc) and radius of rotation (r) for a spring controlled governor is Fc = ar + b, then the governor will be

Stable
None of these
Unstable
Isochronous

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Theory of Machine
If some links are connected such that motion between them can take place in more than one direction, it is called

Partially constrained motion
Incompletely constrained motion
Successfully constrained motion
Completely constrained motion

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