Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be less than core loss. zero. equal to core loss. more than core loss. less than core loss. zero. equal to core loss. more than core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss will depends on f1.6 f² f f³ f1.6 f² f f³ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 92% 94% 96% 95% 92% 94% 96% 95% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor cannot be started on no load? both B and C series motors shunt motors cumulative compound motors both B and C series motors shunt motors cumulative compound motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to frequency of waveform. flux per pole. number of turns in coil. All of these frequency of waveform. flux per pole. number of turns in coil. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings are used in DC generators mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. None of these to provide path for the circulation of cooling air. mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. None of these to provide path for the circulation of cooling air. ANSWER DOWNLOAD EXAMIANS APP
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