Consider the following statements for the coefficient of fluctuation of speed (K) of flywheel.
A. \(\rm K=\frac{maximum \ speed-minimum\ speed}{mean\ speed}\)
B. \(\rm K = \frac{maximum\ fluctuation\ of\ energy}{2\ times\ kinetic\ energy\ of \ the\ flywheel\ at\ mean\ speed}\)
C. \(\rm K = \frac{maximum\ fluctuation\ of\ energy}{ kinetic\ energy\ of \ the\ flywheel\ at\ mean\ speed}\)
Which of the following statements is/are correct ?
1
only A
2
only B
3
both A and B
4
both A and C