_ The method of direct and reverse cranks is used in engines for$?

1.	_ The method of direct and reverse cranks is used in engines for$?
A.	The control of speed fluctuations
B.	Balancing of forces and couples
C.	Kinematic analysis
D.	Vibration analysis
Answer» C. Kinematic analysis

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_ The method of direct and reverse cranks is used in engines for$?

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