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Theory of Machine

Theory of Machine
The locus of a point on a thread unwound from a cylinder will be

A circle
A straight line
Involute
Cycloidal

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Theory of Machine
The example of lower pair is

All of these
Shaft revolving in a bearing
Automobile steering gear
Straight line motion mechanisms

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Theory of Machine
Which of the following mechanism is an approximate straight line motion mechanism?

Watt's mechanism
Robert's mechanism
All of these
Grasshopper mechanism

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Theory of Machine
For a kinematic chain to be considered as mechanism

Two links should be fixed
One link should be fixed
There is no such criterion
None of the links should be fixed

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Theory of Machine
In locomotives, the ratio of the connecting rod length to me crank radius is kept very large in order to

Have perfect balancing
Minimize the effect of primary forces
Minimize the effect of secondary forces
To start the locomotive quickly

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Theory of Machine
An imaginary circle which by pure rolling action, gives the same motion as the actual gear, is called

Addendum circle
Clearance circle
Dedendum circle
Pitch circle

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