Electrical Machines Open circuit test on transformer gives hysteresis loss copper loss both 1and 2 eddy current loss hysteresis loss copper loss both 1and 2 eddy current loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are high initial cost. poor overall efficiency. all of above. high maintenance cost. high initial cost. poor overall efficiency. all of above. high maintenance cost. 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, 2 and 3 1 and 3 1 and 2 2 and 3 1, 2 and 3 1 and 3 1 and 2 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is used in elevators? None of these. DC shunt motor. DC series motor. DC compound motor. None of these. DC shunt motor. DC series motor. DC compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature resistance control method is also called as-----------? constant power control constant torque control constant current control constant voltage control constant power control constant torque control constant current control constant voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the speed of stator rotating magnetic field with respect to rotor rotating magnetic field? Synchronous speed None of these Slip speed Zero Synchronous speed None of these Slip speed Zero ANSWER DOWNLOAD EXAMIANS APP
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