Electrical Machines The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip 3 %. 0 .001 %. 3.33 %. None of these 3 %. 0 .001 %. 3.33 %. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 volt dc series motor having an armature resistance of 0.2 Ω takes a load current of 60 A. What will be the torque produced at the shaft of the motor? Consider brush drop of 1V. 234.76 N-m. can not be determined. 266.20 N-m. 133.22 N-m 234.76 N-m. can not be determined. 266.20 N-m. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 10% 19% 5% 40% 10% 19% 5% 40% ANSWER DOWNLOAD EXAMIANS APP
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 1. slip X 50 / 3. slip X 69 / 3. slip X 59 / 3. 1. slip X 50 / 3. slip X 69 / 3. slip X 59 / 3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 220 V. 240 V. 280 V. 150 V. 220 V. 240 V. 280 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 150Hz. 50Hz. 200Hz. 100Hz. 150Hz. 50Hz. 200Hz. 100Hz. ANSWER DOWNLOAD EXAMIANS APP
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