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
Broken belt
All the belts
Broken belt and its adjacent belts

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Theory of Machine
A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will

Become equal to R/2
Become equal to R/4
Become equal to 2R
Remain same as before

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