Electrical Machines The armature MMF waveform of a DC machine is rectangular. sinusoidal. triangular. pulsating. rectangular. sinusoidal. triangular. pulsating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC generator will be in a position to build up without any residual magnetism in the field? Separately excited. Series. Shunt. Compound. Separately excited. Series. Shunt. Compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction depends on which of the following? None of these both 1 and 2 magnitude of load current power factor of load None of these both 1 and 2 magnitude of load current power factor of load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 30°. 120°. 90°. 60°. 30°. 120°. 90°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC shunt generator working on load, the brushes are moved forward in the direction of rotation, as a result of this, commutation will worsen and terminal voltage will fall improve and terminal voltage will rise . worsen and terminal voltage will rise. improve but terminal voltage will fall. worsen and terminal voltage will fall improve and terminal voltage will rise . worsen and terminal voltage will rise. improve but terminal voltage will fall. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of a DC motor is laminated to reduce eddy current loss. copper loss. hysteresis loss. friction and windage loss. eddy current loss. copper loss. hysteresis loss. friction and windage loss. ANSWER DOWNLOAD EXAMIANS APP
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