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Theory of Machine

Theory of Machine
The lower pairs are _________ pairs.

Force-closed
Self-closed
Friction closed
None of these

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Theory of Machine
The number of links in pantograph mechanism is equal to

5
4
2
3

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

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

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Theory of Machine
Coriolis component acts

Somewhere in between above two
None of these
Along sliding surfaces
Perpendicular to sliding surfaces

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Theory of Machine
A kinematic chain requires at least

2 links and 3 turning pairs
5 links and 4 turning pairs
3 links and 4 turning pairs
4 links and 4 turning pairs

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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.

2θ
θ/2
4θ
θ

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