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Theory of Machine

Theory of Machine
The purpose of a link is to

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

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Theory of Machine
The example of successfully constrained motion is a

All of these
Motion of the shaft between a footstep bearing
Motion of an I.C. engine valve
Piston reciprocating inside an engine cylinder

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Theory of Machine
When the primary direct crank of a reciprocating engine makes an angle of 'θ' with the line of stroke, then the secondary direct crank will make an angle of _________ with the line of stroke.

θ
2θ
4θ
θ/2

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Theory of Machine
Which of the following is an example of a higher pair?

All of the listed here
Toothed gearing
Ball and roller bearing
Belt and rope drive

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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 - 2
l - 1
l
l + 1

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Theory of Machine
The advantage of the piston valve over the slide valve is that in the former case

The pressure developed being high provides tight sealing
Wear is less
Power absorbed is less
Both wear and power absorbed are low

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