Electrical Machines The armature MMF waveform of a DC machine is rectangular. pulsating. triangular. sinusoidal. rectangular. pulsating. triangular. sinusoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increase in speed of a DC motor both back emf as well as line current fall. back emf falls and line current increases. back emf increases but line current falls. both back emf as well as line current increase. both back emf as well as line current fall. back emf falls and line current increases. back emf increases but line current falls. both back emf as well as line current increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening control method is used for the _________ ? both A and B None of these below rated speed above rated speed both A and B None of these below rated speed above rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors is/are widely used? None of these squirrel cage induction motor slip ring induction motor either of these None of these squirrel cage induction motor slip ring induction motor either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? ∞ a finite negative value a positive finite value 0 ∞ a finite negative value a positive finite value 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: 50 Hz. Zero Hz. 100 Hz. 25 Hz. 50 Hz. Zero Hz. 100 Hz. 25 Hz. ANSWER DOWNLOAD EXAMIANS APP
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