Electrical Machines Field divertor method of speed control of a DC series motor gives speed above rated one due to reduction of Armature current. Field current. Line current. None of above. Armature current. Field current. Line current. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A crusher is equipped with Synchronous motor. Slip ring induction motor. Reluctance motor. DC shunt motor. Synchronous motor. Slip ring induction motor. Reluctance motor. DC shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The maximum possible speed at which an alternator can be driven to generate 50 Hz and 4000 V is 1500 rpm. 3600 rpm. 4000 rpm. 3000 rpm. 1500 rpm. 3600 rpm. 4000 rpm. 3000 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Number of tappings for each equalizer ring is equal to number of pole pairs. number of commutator segments. number of parallel paths. number of poles. number of pole pairs. number of commutator segments. number of parallel paths. number of poles. 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. Starting torque. Full load current. Starting torque, operating speed, full load current. Operating speed. Starting torque. Full load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 75 W 50 W 168.75 W 112.5 W 75 W 50 W 168.75 W 112.5 W ANSWER DOWNLOAD EXAMIANS APP
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