Electrical Machines For an ideal transformer the winding should have no ohmic resistance on either side equal resistance on primary and secondary side maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side no ohmic resistance on either side equal resistance on primary and secondary side maximum resistance on primary side and least resistance on secondary side minimum resistance on primary side and maximum resistance on secondary side 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. 120 volt. None of these. 218.5 volt. 220.4 volt. 120 volt. None of these. 218.5 volt. 220.4 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a DC series motor is Proportional to field current. Inversely proportional to the armature current. Proportional to the square of the armature current. Proportional to the armature current. Proportional to field current. Inversely proportional to the armature current. Proportional to the square of the armature current. Proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To have sparkless commutation, the armature reaction effect in a DC machine is neutralized by increasing field excitation. fixing the brush axis inline with the pole axis. compensating winding and commutating poles. shifting the brush axis from GNA to MNA. increasing field excitation. fixing the brush axis inline with the pole axis. compensating winding and commutating poles. shifting the brush axis from GNA to MNA. 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 The shaft of induction motor may be unbalanced due to overheating of winding. poor lubrication. uneven air gap. overload. overheating of winding. poor lubrication. uneven air gap. overload. ANSWER DOWNLOAD EXAMIANS APP
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