Electrical Machines If B is flux density, l the length of the conductor and v the velocity of the conductor, then emf is given by Bl2v. Blv. Bl2v2. Blv2. Bl2v. Blv. Bl2v2. Blv2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction motor an induction generator a synchronous motor None of these an induction motor an induction generator a synchronous motor None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection. 399 V. 50 V. 100 V. 230.2 V. 399 V. 50 V. 100 V. 230.2 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then the machine with more drooping characteristic will supply more load. None of these the machine will share load equally. the machine with more drooping characteristic will supply less load. the machine with more drooping characteristic will supply more load. None of these the machine will share load equally. the machine with more drooping characteristic will supply less load. 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 Which of the following is/are the advantages of carbon brush over the copper brush? They are not hard as copper brush All of these They are self lubricating in nature In case of any sparking they will be less damaged than copper brushes They are not hard as copper brush All of these They are self lubricating in nature In case of any sparking they will be less damaged than copper brushes ANSWER DOWNLOAD EXAMIANS APP
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