Electrical Machines If the excitation is critical, the power factor of the alternator is None of these leading power factor. unity power factor. lagging power factor. None of these leading power factor. unity power factor. lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of self induction. electromagnetic induction. mutual induction. self or mutual induction. self induction. electromagnetic induction. mutual induction. self or mutual induction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings are used in DC generators to neutralize the cross magnetizing effect of the armature reaction. to provide path for the circulation of cooling air. None of these mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. to provide path for the circulation of cooling air. None of these mainly to reduce the eddy currents by providing local short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The compensating winding in a DC machine is located on pole shoes for avoiding the flashover at the commutator. is located on pole shoes to avoid the sparking at the brushes. is located on commutating poles for improving commutation. is located in armature slots for compensation of the armature reaction. is located on pole shoes for avoiding the flashover at the commutator. is located on pole shoes to avoid the sparking at the brushes. is located on commutating poles for improving commutation. is located in armature slots for compensation of the armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 4 pole, 50 Hz induction motor 4 % slip, calculate frequency of the rotor emf? 2 Hz. 50 Hz. 10 Hz. 3 Hz. 2 Hz. 50 Hz. 10 Hz. 3 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque speed characteristics of a AC servomotor is approximately hyperbola linearised any of the above parabola hyperbola linearised any of the above parabola ANSWER DOWNLOAD EXAMIANS APP
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