Electrical Machines If the field connection of a DC Shunt Motor is changed then it will run in same direction. it will run in same direction by slowly. motor will not run. it will run in opposite direction. it will run in same direction. it will run in same direction by slowly. motor will not run. it will run in opposite direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotation of 5th harmonic component in the stator of an induction motor is 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. (1 / 5) times the synchronous speed. (1 / 15) times the synchronous speed. 5 times the synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions is a dc motor provided with compensating winding used ? 1. Wide range of speed control above normal 2. Wide range of steady load variation with no speed control 3.Wide range of rapid variation in load Select the correct answer using the codes given below : Codes : 1 and 2 1 and 3 1, 2 and 3 2 and 3 1 and 2 1 and 3 1, 2 and 3 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor will deliver maximum power when load angle is 0°. load angle is 45°. input power factor is unity. load angle is equal to internal angle θ. load angle is 0°. load angle is 45°. input power factor is unity. load angle is equal to internal angle θ. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 75 W 112.5 W 50 W 168.75 W 75 W 112.5 W 50 W 168.75 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are electrically linked. conductively linked. inductively linked. mechanically linked. electrically linked. conductively linked. inductively linked. mechanically linked. ANSWER DOWNLOAD EXAMIANS APP
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