Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

There is no need of changing any one as remaining belts can take care of transmission of load
All the belts
Broken belt and its adjacent belts
Broken belt

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Theory of Machine
In a steam engine, the earlier cut-off with a simple slide valve may be obtained by increasing the steam lap and the angle of advance of the eccentric but keeping constant the travel and lead of the valve, this method will

All of the listed here
Cause withdrawing or throttling of steam
Reduce length of effective stroke of piston
Reduce maximum opening of port to steam

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Theory of Machine
Lower pairs are those which have

Point or line contact between the two elements when in motion
Surface contact between the two elements when in motion
Elements of pairs not held together mechanically
Two elements that permit relative motion

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