Electrical Machines In an induction motor, the no-load slip is generally equal to zero. 4 %. less than 1 %. 1.5 %. zero. 4 %. less than 1 %. 1.5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During hunting of a synchronous motor field excitation increases. negative phase sequence currents are generated. damper bar develops torque. harmonic are developed in the armature circuit. field excitation increases. negative phase sequence currents are generated. damper bar develops torque. harmonic are developed in the armature circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing inter poles. any one or more of the above methods. compensating winding. high resistance carbon brushes. inter poles. any one or more of the above methods. compensating winding. high resistance carbon brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 50 Hz three phase induction motor under full load condition is 725 rpm the number of poles of the motor are ______________. 6. 4. 8. 2. 6. 4. 8. 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then None of these the machine with more drooping characteristic will supply more load. the machine will share load equally. the machine with more drooping characteristic will supply less load. None of these the machine with more drooping characteristic will supply more load. the machine will share load equally. the machine with more drooping characteristic will supply less load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to flux per pole. number of turns in coil. All of these frequency of waveform. flux per pole. number of turns in coil. All of these frequency of waveform. ANSWER DOWNLOAD EXAMIANS APP
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