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

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

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Theory of Machine
Which of the following statements regarding laws governing the friction between dry surfaces are correct?

All of these
The friction force is dependent on the materials of the contact surfaces.
The friction force is directly proportional to the normal force.
The friction force is independent of me area of contact.

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