Theory of Machine
Sense of tangential acceleration of a link

Is opposite to that of velocity
Is perpendicular to that of velocity
Could be either same or opposite to velocity
Is same as that of velocity

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Theory of Machine
In order to give a complete secondary balance of a multi-cylinder inline engine,

The algebraic sum of the secondary forces must be equal to zero
The algebraic sum of the couples about any point in the plane of the secondary forces must be equal to zero
None of these
Both (A) and (B)

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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

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

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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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