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Theory of Machine

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l
l - 2
l - 1
l + 1

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Theory of Machine
The mechanism in which two are turning pairs and two are sliding pairs, is called a

Double slider crank chain
Elliptical trammel
Scotch yoke mechanism
All of these

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Theory of Machine
A cam with a roller follower would constitute following type of pair

Lower pair
Higher pair
Open pair
Close pair

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Theory of Machine
In a four stroke I.C. engine, the turning moment during the compression stroke is

Negative throughout
Positive throughout
Positive during major portion of the stroke
Negative during major portion of the stroke

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Theory of Machine
At the nodal point in a shaft, the amplitude for torsional vibration will be

Infinity
Zero
Maximum
Minimum

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Theory of Machine
The purpose of a link is to

All of these
Guide other links
Act as a support
Transmit motion

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