+1 vote
in Machine Dynamics by (34.3k points)
In a multicylinder inline engine, each imaginary secondary crank with a mass attached to the crankpin is inclined to the line of stroke at which angle?

(a) Twice the angle of crank

(b) Half the angle of crank

(c) Thrice the angle of crank

(d) Four times the angle of crank

This question was posed to me during a job interview.

Origin of the question is Balancing of Coupled Locomotives & Secondary Forces of Multi-cylinder Inline Engines topic in division Balancing of Reciprocating Masses of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
The correct option is (a) Twice the angle of crank

To elaborate: In multi-cylinder in-line engines, each of the imaginary secondary crank with a mass attached to the crankpin is inclined to the line of stroke at twice the angle of the actual crank.

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