Electrical Machines If the applied voltage to a dc machine is 230 V, then the back emf, for maximum power developed, is 230 V 460 V 200 V 115 V 230 V 460 V 200 V 115 V 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 0.87 0.96 0.95 1.06 0.87 0.96 0.95 1.06 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively large and thick less and thin large and thin less and thick large and thick less and thin large and thin less and thick ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be constant independent of speed. proportional to rotor speed. proportional to square of rotor speed. zero. constant independent of speed. proportional to rotor speed. proportional to square of rotor speed. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are electrically linked. conductively linked. mechanically linked. inductively linked. electrically linked. conductively linked. mechanically linked. inductively linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 0.1 µF. 2 - 3 µF. 5 - 10 F. 1 - 2 µF. 0.1 µF. 2 - 3 µF. 5 - 10 F. 1 - 2 µF. ANSWER DOWNLOAD EXAMIANS APP
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