Electric Machines Mega Quiz 4

(a) all the four poles are north poles

(b) alternate poles are north and south

(c) all the four poles are south poles

(d) two north poles follow two south poles

(a) where low voltage and high currents are involved

(b) where high voltage and small cur-rents are involved

(c) in both of the above cases

(d) in none of the above cases

(a) is amenable to better voltage control

(b) is more stable

(c) has exciting current independent of load current

(d) has all above features

(a) current

(b) voltage

(c) speed

(d) none of above

(a) speed

(b) load

(c) voltage

(d) speed and voltage