Electrical Machines The speed regulation of a DC motor is given as NnL/NfL. (NnL − NfL)/NfL. (NfL − NnL)/NnL. NnL − NfL. NnL/NfL. (NnL − NfL)/NfL. (NfL − NnL)/NnL. NnL − NfL. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 1 any of the above 0.5 0 1 any of the above 0.5 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to Ia2 I/Ia2 Ia 1/Ia Ia2 I/Ia2 Ia 1/Ia ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip 3 %. 3.33 %. 0 .001 %. None of these 3 %. 3.33 %. 0 .001 %. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are high maintenance cost. high initial cost. poor overall efficiency. all of above. high maintenance cost. high initial cost. poor overall efficiency. all of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. ANSWER DOWNLOAD EXAMIANS APP
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