Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is 40 A. 400 A. 44 A. 440 A. 40 A. 400 A. 44 A. 440 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Belt conveyors offer _______________ starting torque. high. low. zero. medium. high. low. zero. medium. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eb/Vt ratio of a DC motor is an indication of running torque. efficiency. starting torque. speed regulation. running torque. efficiency. starting torque. speed regulation. 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 0.96 0.95 0.87 1.06 0.96 0.95 0.87 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is possible in DC shunt motor with field weakening control. DC compound motor. DC shunt motor with armature resistance control. DC series motor. DC shunt motor with field weakening control. DC compound motor. DC shunt motor with armature resistance control. DC series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Remain unaltered. Increase. Reduce. Oscillate around the normal speed. Remain unaltered. Increase. Reduce. Oscillate around the normal speed. ANSWER DOWNLOAD EXAMIANS APP
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