Theory of Machine
In a single slider crank chain

Three are turning pairs and one is a sliding pair
Each of the four pairs is a turning pair
One is a turning pair and three are sliding pairs
Two are turning pairs and two are sliding pairs

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Theory of Machine
Hammer blow

Varies inversely with the square of the speed
Is the maximum horizontal unbalanced force caused by the mass provided to balance the reciprocating masses.
Is the maximum vertical unbalanced force caused by the mass added to balance the reciprocating masses
Varies as the square root of the speed

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

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

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