Electrical Machines Hopkinss test in DC motor is conducted at ? None of these. Full load. No load. Low load. None of these. Full load. No load. Low load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an AC servomotor has one of its winding excited by AC, then voltage measured at the other winding with rotor running will be constant independent of speed. zero. proportional to square of rotor speed. proportional to rotor speed. constant independent of speed. zero. proportional to square of rotor speed. proportional to rotor speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve voltage level. Improve power level. Improve current level. Improve power factor. Improve voltage level. Improve power level. Improve current level. Improve power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct roller bearings → large machines neither 1 nor 2 both A and B ball bearings → small machines roller bearings → large machines neither 1 nor 2 both A and B ball bearings → small machines ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the above problem, find the induced voltage of an alternator of it is to deliver a load of 100 A at power factor of 0.8 lagging with terminal voltage of 200 V. 230 V. 222 V. 220 V. 225 V. 230 V. 222 V. 220 V. 225 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During hunting of a synchronous motor harmonic are developed in the armature circuit. damper bar develops torque. field excitation increases. negative phase sequence currents are generated. harmonic are developed in the armature circuit. damper bar develops torque. field excitation increases. negative phase sequence currents are generated. ANSWER DOWNLOAD EXAMIANS APP
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