Current normally used to excite synchronous and d.c. generators is HomeDC Motor MCQsCurrent normally used to excite synchronous and d.c. generators isQ. Current normally used to excite synchronous and d.c. generators isA. D.CB. A.C. single phaseC. A.C. two phaseD. A.C. three phaseAnswer: D.C
A shunt motor is fitted with a field regulator for speed control. For constant torque load, the speed will be minimum when the resistance of the regulator is