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Theory of Machine

Theory of Machine
Hart mechanism has

Four links
Eight links
Twelve links
Six links

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Theory of Machine
The centre of gravity of a coupler link in a four bar mechanism will experience

Only linear acceleration
No acceleration
Both linear and angular acceleration
Only angular acceleration

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Theory of Machine
A friction circle is a circle drawn when a journal rotates in a bearing. Its radius depends upon the coefficient of friction and the

Angular velocity of journal
Clearance between journal and bearing
Magnitude of the forces on journal
Radius of journal

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Theory of Machine
If the pressure angle is __________, a reciprocating follower will jam in its bearings.

Large
Too large
Too small
Small

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Theory of Machine
An exact straight line motion mechanism is a

All of these
Peaucellier's mechanism
Hart's mechanism
Scott-Russell's mechanism

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Theory of Machine
For the same lift and same angle of ascent, a smaller base circle will give

There is no such relation with pressure angle
A small value of pressure angle
A large value of pressure angle
Something else

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