Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. Highest speed of alternator is 3600 rpm. 600 rpm. 3000 rpm. 500 rpm. 3600 rpm. 600 rpm. 3000 rpm. 500 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? 0 < S < 1 -2 < S < 2 0 < S < 2 -1 < S < 1 0 < S < 1 -2 < S < 2 0 < S < 2 -1 < S < 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the source voltage of a DC motor is increased, which of the following will decrease? Operating speed. Starting torque, operating speed, full load current. Starting torque. Full load current. Operating speed. Starting torque, operating speed, full load current. Starting torque. Full load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous motor can be started by providing damper winding in its rotor circuit. coupling it with a small AC induction motor called the pony motor. any of the above methods. coupling it with a DC compound motor. providing damper winding in its rotor circuit. coupling it with a small AC induction motor called the pony motor. any of the above methods. coupling it with a DC compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hopkinss test in DC motor is conducted at ? No load. Full load. Low load. None of these. No load. Full load. Low load. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor has external resistance Ra and Rf in the armature and field circuits respectively. Armature current at starting can be reduced by keeping Ra maximum and Rf minimum Ra minimum and Rf minimum Rf maximum and Ra minimum Ra maximum and Rf maximum Ra maximum and Rf minimum Ra minimum and Rf minimum Rf maximum and Ra minimum Ra maximum and Rf maximum ANSWER DOWNLOAD EXAMIANS APP
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