Electrical Machines Dynamic braking is employed to brake both 1 and 2 reversing drive non reversing drive None of these both 1 and 2 reversing drive non reversing drive None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of mechanical losses. hysteresis losses. ohmic losses. eddy current losses. mechanical losses. hysteresis losses. ohmic losses. eddy current losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 175 V 140 V 240 V 120 V 175 V 140 V 240 V 120 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotive which of the following motor are used ? Separately compound motor. Synchronous motor. DC series motor. Shunt motor. Separately compound motor. Synchronous motor. DC series motor. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 1.06 0.95 0.87 0.96 1.06 0.95 0.87 0.96 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Delta - star Star - star Delta - delta Star - delta Delta - star Star - star Delta - delta Star - delta ANSWER DOWNLOAD EXAMIANS APP
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