Electrical Machines The no load current in a transformer lags the applied voltage by about 115°. 90°. 0°. about 75°. about 115°. 90°. 0°. about 75°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor may be unbalanced due to overheating of winding. overload. uneven air gap. poor lubrication. overheating of winding. overload. uneven air gap. poor lubrication. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC generator will be in a position to build up without any residual magnetism in the field? Separately excited. Compound. Shunt. Series. Separately excited. Compound. Shunt. Series. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor electromagnetic torque developed is Inversely proportional to the armature current. Proportional to the square of armature current. None of above. Proportional to the armature current. Inversely proportional to the armature current. Proportional to the square of armature current. None of above. Proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1200 1203 1080 1000 1200 1203 1080 1000 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by low voltage supply harmonics developed in the motor high loads improper design of stator laminations low voltage supply harmonics developed in the motor high loads improper design of stator laminations ANSWER DOWNLOAD EXAMIANS APP
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