Electrical Machines Which of the following induction motor has maximum speed? 6 pole. 4 pole. 8 pole. 2 pole. 6 pole. 4 pole. 8 pole. 2 pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of the dc motor is generally of the range 0.5 ohm. 100 ohm. 50 ohm. 0.1 ohm. 0.5 ohm. 100 ohm. 50 ohm. 0.1 ohm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor has external resistance Ra and Rf in the armature and field circuits respectively. Armature current at starting can be reduced by keeping Ra maximum and Rf minimum Rf maximum and Ra minimum Ra minimum and Rf minimum Ra maximum and Rf maximum Ra maximum and Rf minimum Rf maximum and Ra minimum Ra minimum and Rf minimum Ra maximum and Rf maximum ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 21% 41% 10% 11% 21% 41% 10% 11% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is (1 / 5) times the synchronous speed. (1 / 15) times the synchronous speed. 5 times the synchronous speed. 0.5 times the synchronous speed. (1 / 5) times the synchronous speed. (1 / 15) times the synchronous speed. 5 times the synchronous speed. 0.5 times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will run at very high speed. burn. start haunting. run at very low speed. run at very high speed. burn. start haunting. run at very low speed. ANSWER DOWNLOAD EXAMIANS APP
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