Electrical Machines What happens if fifth multiples of harmonics is given to induction motor? Fail to start. Either short circuit or open circuit occurs. It will rotates in reverse direction. It will rotates in normal operation. Fail to start. Either short circuit or open circuit occurs. It will rotates in reverse direction. It will rotates in normal operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. The highest speed of the alternators is 3600 rpm. 600 rpm. 500 rpm. 3000 rpm. 3600 rpm. 600 rpm. 500 rpm. 3000 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An alternator is feeding an infinite busbar. Its prime mover is suddenly shutdown. The alternator will start working as induction motor. continue to work as synchronous motor with same direction of rotation. continue to work as alternator but the direction of rotation will reverse. come to stand still. start working as induction motor. continue to work as synchronous motor with same direction of rotation. continue to work as alternator but the direction of rotation will reverse. come to stand still. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 volt dc motor has an armature winding resistance of 0.5 ohm. Calculate the emf induced by the motor if the full load armature current is 23 ampere. None of these. 220.4 volt. 120 volt. 218.5 volt. None of these. 220.4 volt. 120 volt. 218.5 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of Both of above. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. None of these. Both of above. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shaded pole single phase induction motor can be used for food mixers wet grinders personal computers as cooling fan tape recorders food mixers wet grinders personal computers as cooling fan tape recorders ANSWER DOWNLOAD EXAMIANS APP
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