Electrical Machines The power input to a 3 - φ induction motor is 60 kW and stator loss is 1 kW the rotor cu loss per phase is slip X 59 / 3. 1. slip X 50 / 3. slip X 69 / 3. slip X 59 / 3. 1. slip X 50 / 3. slip X 69 / 3. 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
Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. Highest speed of alternator is 3600 rpm. 500 rpm. 600 rpm. 3000 rpm. 3600 rpm. 500 rpm. 600 rpm. 3000 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a fault at the terminal of a synchronous generator, the fault current is maximum for a 3 - phase to ground fault. line to line fault. line to ground fault. 3 - phase fault. 3 - phase to ground fault. line to line fault. line to ground fault. 3 - phase fault. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a 3 - Φ wound induction motor is provided with single phase winding. heavy copper or aluminium bars placed in rotor slots. three phase winding. heavy short-circuited end rings. single phase winding. heavy copper or aluminium bars placed in rotor slots. three phase winding. heavy short-circuited end rings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increases the design cost All of these increase the maintenance and repair increase the iron loss increases the design cost All of these increase the maintenance and repair increase the iron loss ANSWER DOWNLOAD EXAMIANS APP
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