Q:

What is the function of a crank shaft?

A) It converts the reciprocating motion of the piston into rotary motion of the crankshaft B) It converts the rotary motion of the crankshaft into reciprocating motion of the piston
C) It converts the rotary motion of the piton into reciprocating motion of the crankshaft D) It converts the reciprocating motion of the crank shaft into rotary motion of the piston
 

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