A. Self-excited generator
B. Separately excited generator
C. Level compounded generator
D. All of the above
A. Shunt generators
B. Series generators
C. Compound generators
D. None of the above
A. The direction of that generator is reversed
B. The speed of that generator is increased
C. The field of that generator is weakened
D. That generator takes large share of loads
A. to increase the series flux
B. to increase the generated e.m.f.
C. to reduce the combined effect of ar-mature reaction of both the machines
D. so that the two identical machines will pass approximately equal cur¬rents to the load
A. same kW rating
B. the same operation r.p.m.
C. the same drooping voltage characteristics
D. same percentage regulation
A. 270 V
B. 267.5 V
C. 265 V
D. 257.4 V
A. 100% regulation
B. infinite regulation
C. 50% regulation
D. 1% regulation
A. only if the resistance of the field circuit is less than critical value
B. only if the resistance of the field circuit is greater than critical value
C. irrespective of the value of the resistance in the field circuit
D. none
A. 150 V
B. less than 150 V
C. greater than 150 V
D. none of the above