Electrical Machines Transformer cooling and insulating oil must be of low BDV. high viscosity. low viscosity. low resistivity. low BDV. high viscosity. low viscosity. low resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Starting torque, operating speed, full load current. Operating speed. Full load current. Starting torque. Starting torque, operating speed, full load current. Operating speed. Full load current. Starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator, when driven without any excitation, showed an open circuit voltage of 12 V. When the field winding was excited, the voltage dropped to zero. It happened because field winding was wrongly connected there was no residual magnetism in the field circuit field resistance was higher than critical resistance there was a break in the armature circuit field winding was wrongly connected there was no residual magnetism in the field circuit field resistance was higher than critical resistance there was a break in the armature circuit ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stepper motor is used in food processing computer printers All of these traction food processing computer printers All of these traction ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following, voltage regulation may be zero or negative unity power factor lagging power factor All of these leading power factor unity power factor lagging power factor All of these leading power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. Highest speed of alternator is 3600 rpm. 500 rpm. 3000 rpm. 600 rpm. 3600 rpm. 500 rpm. 3000 rpm. 600 rpm. ANSWER DOWNLOAD EXAMIANS APP
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