flywheel

Question 1

The maximum fluctuation of speed is the

Answer 1

difference of the maximum and minimum speeds

Question 2

The coefficient of fluctuation of speed is the ……….. of maximum fluctuation of speed and the mean speed.

Answer 2

ratio

Question 3

In a turning moment diagram, the variations of energy above and below the mean resisting torque line is called

Answer 3

fluctuation of energy

Question 4

If E = Mean kinetic energy of the flywheel, Cs = Coefficient of fluctuation of speed and deltaE= Maximum fluctuation of speed, then

Answer 4

deltaE=2ExCs

Question 5

The ratio of the maximum fluctuation of energy to the ……. is called coefficient of fluctuation of energy.

Answer 5

workdone per cycle

Question 6

Due to the centrifugal force acting on the rim, the flywheel arms will be subjected to

Answer 6

tensile stress

Question 7

The tensile stress in the flywheel rim due to the centrifugal force acting on the rim is given by

where
p = Density of the flywheel material, and
v = Linear velocity of the flywheel

Answer 7

p.v^2

Question 8

The cross-section of the flywheel arms is usually

Answer 8

elliptical

Question 9

In order to find the maximum bending moment on the arms, it is assumed as a

Answer 9

cantilever beam fixed at the hub and carrying a concentrated load at the free end of the rim

Question 10

The diameter of the hub of the flywheel is usually taken

Answer 10

twice the diameter of the shaft