In turbo-alternators, smooth cylindrical type rotors used have long axial length because
A. it gives smooth running of the rotor
B. it reduces windage loss
C. centrifugal force is reduced
D. number of armature conductors being less they have to be necessarily long for generating the required voltage
Answer:D
In turbo-alternators, smooth cylindrical type rotors used have long axial length because
A. it gives smooth running of the rotor B. it reduces windage loss C. centrifugal force is reduced D. number of armature conductors being less they have to be necessarily long for generating the required voltage