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Theory of Machine

Theory of Machine
Ackermann steering gear consists of

Sliding pairs
Turning pairs
Rolling pairs
Higher pairs

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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
Instantaneous center of rotation of a link in a four bar mechanism lies on

A point obtained by intersection on extending adjoining links
Right side pivot of this link
Left side pivot of this link
Can’t occur

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

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

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

Screw pair
Belt and pulley
Sliding pair
Turning pair

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Theory of Machine
A system in dynamic balance implies that

The system is critically damped
There will absolutely no wear of bearings
There is no critical speed in the system
The system is also statically balanced

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