Q:

In a reciprocating steam engine, what is the function of an eccentric?

A) It converts the rotary motion of the D-slide valve into the reciprocating motion of the crankshaft B) It converts the reciprocating motion of the D-slide valve into the rotary motion of the crankshaft
C) It converts the reciprocating motion of the crankshaft into the rotary motion of the D-slide valve D) It converts the rotary motion of the crankshaft into the reciprocating motion of the D-slide valve
 

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