In turbo-alternators, smooth cylindrical rotors have very long axial length because it
A. reduces friction and windage loss.
B. reduces centrifugal force.
C. number of conductors being less, they have to be necessarily long for generating the required voltage.
D. none of the above.
Answer:C
In turbo-alternators, smooth cylindrical rotors have very long axial length because it
A. reduces friction and windage loss. B. reduces centrifugal force. C. number of conductors being less, they have to be necessarily long for generating the required voltage. D. none of the above.