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Q:

Which of the following statements about cross-head of a reciprocating steam engine is FALSE?

A) It connects the piston rod with the connecting rod B) Piston rod in some engines is joined to the cross-head by screwing
C) In some engines cotter joint is used to join piston rod with the cross-heads D) Knuckle-joint is used to join cross-head and piston
 
Answer & Explanation Answer: D) Knuckle-joint is used to join cross-head and piston

Explanation: The piston rod is either screwed to the cross-head or a cotter joint is used to join the two. In some engines the piston rod is forged to the cross-head end. The reciprocating piston rod and the oscillating connecting rod are joined by the cross-head.

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