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Theory of Machine

Theory of Machine
A pulley and belt in a belt drive form a

Cylindrical pair
Turning pair
Rolling pair
Sliding pair

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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
θ/2
4θ
2θ

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Theory of Machine
The pressure angle of a cam depends upon

Offset between center lines of cam and follower
All of these
Angle of ascent
Lift of follower

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Theory of Machine
For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

Zero and maximum
Zero and minimum
Maximum and zero
Minimum and maximum

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

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

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Theory of Machine
In a reciprocating steam engine, which of the following forms a kinematic link?

Crankshaft and flywheel
Flywheel and engine frame
Cylinder and piston
Piston rod and connecting rod

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