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Theory of Machine

Theory of Machine
The primary unbalanced force is maximum _________ in one revolution of the crank.

Four times
Eight times
Twice
Sixteen times

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Theory of Machine
In its simplest form, a cam mechanism consists of following number of links

2
4
3
1

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Theory of Machine
According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a

Parabolic curve
Straight line
Triangle
Rectangle

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

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Theory of Machine
Elements of pairs held together mechanically is known as

Closed pair
Open pair
Mechanical pair
Rolling pair

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Theory of Machine
The example of higher pair is

All of these
Ball and roller bearings
Gears, cams
Belt, rope and chain drives

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