Electrical Machines The rotor electromotive force of the IM is observed to make 100 complete alterations per minute, calculated slip 3.33 %. 0 .001 %. 3 %. None of these 3.33 %. 0 .001 %. 3 %. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines R1 is the resistance of the primary winding of the transformer. The turn ratio in terms of primary to secondary is K. Then the equivalent resistance of the primary referred to secondary is K²R1 R1 /K R1 /K² K×R1 K²R1 R1 /K R1 /K² K×R1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage 150 V. 200 V. 223.V. 300 V. 150 V. 200 V. 223.V. 300 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions is a dc motor provided with compensating winding used ? 1. Wide range of speed control above normal 2. Wide range of steady load variation with no speed control 3.Wide range of rapid variation in load Select the correct answer using the codes given below : Codes : 2 and 3 1 and 3 1 and 2 1, 2 and 3 2 and 3 1 and 3 1 and 2 1, 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Crawling in an induction motor is due to space harmonics produced by winding currents. insufficient starting torque. slip ring rotor. time harmonics in supply. space harmonics produced by winding currents. insufficient starting torque. slip ring rotor. time harmonics in supply. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 1.1. 0.905. 20. 0.05. 1.1. 0.905. 20. 0.05. ANSWER DOWNLOAD EXAMIANS APP
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