fluctuation of speed

maximum fluctuation of speed

coefficient of fluctuation of speed

none of these

vertically and parallel

vertically and perpendicular

horizontally and parallel

horizontally and perpendicular

(Length of the path of approach/Circular pitch)

(Length of the path of recess / Circular Pitch)

(Length of the arc of contact / Circular pitch)

(Length of the arc of approach / cos 0)

Agree

Disagree

?₁.?₂.r

( ?₁ - ?₂)r

( ?₁ + ?₂)r

( ?₁ - ?₂)2r