Electrical Machines The armature shaft must be able to with stand Bending moment due to weight of the armature. Twisting stains due to transmission of torque. Any unbalanced magnetic pull on the armature core. All of these Bending moment due to weight of the armature. Twisting stains due to transmission of torque. Any unbalanced magnetic pull on the armature core. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The breakdown torque of a synchronous motor varies as applied voltage V 1/V² V² 1/V applied voltage V 1/V² V² 1/V 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 120 V 240 V 140 V 175 V 120 V 240 V 140 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a DC cummulative compound wound motor is loaded Both torque and speed decrease. Torque decrease and speed increases. Torque increase and speed decrease. Torque and speed both increase. Both torque and speed decrease. Torque decrease and speed increases. Torque increase and speed decrease. Torque and speed both increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An unexcited single phase synchronous motor is reluctance motor. repulsion motor. universal motor. AC series motor. reluctance motor. repulsion motor. universal motor. AC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 400 V, 50 Hz, 30 Hp, three phase IM is drawing 50 A current at 0.8 p.f lagging. The stator and rotor copper losses are 1.5 KW and 900 W respectively. The friction and windage losses are 1050 W and core losses are 1200 W. The air gap power of the motor will be 26.21 kW. 25 kW. 24.11 kW. 23.06 kW. 26.21 kW. 25 kW. 24.11 kW. 23.06 kW. ANSWER DOWNLOAD EXAMIANS APP
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