Theory of Machine
The maximum fluctuation of speed is the

Difference of the maximum and minimum speeds
Sum of maximum and minimum speeds
Difference of minimum fluctuation of speed and the mean speed
Variations of speed above and below the mean resisting torque line

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Theory of Machine
The relation l = (2/3).(j + 2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

One lower pair and two additional links
Two lower pairs and two additional links
Two lower pairs and one additional link
Any one of these

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