Electrical Machines Secondary winding of an auto transformer is also called damping winding. compensating winding. tertiary winding. common winding. damping winding. compensating winding. tertiary winding. common winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The primary and secondary windings of a transformer are conductively linked. electrically linked. inductively linked. mechanically linked. conductively linked. electrically linked. inductively linked. mechanically linked. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor will remain the same will become lagging None of these will become leading will remain the same will become lagging None of these will become leading ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase starting torque. breaking torque. cost of operation. power factor. starting torque. breaking torque. cost of operation. power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : For a level compounded dc generator to run at constant voltage, the series field mmf must effectively compensate 1. armature reaction mmf 2.armature resistance drop 3. brush contact voltage drop Which of these statements is/are correct ? 1, 2 and 3 2 alone 1 and 3 1 and 2 1, 2 and 3 2 alone 1 and 3 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor the 7th harmonic torque may make the motor rotate at (1 / 7)th synchronous speed. This is called harmonics. cogging. resonance. crawling. harmonics. cogging. resonance. crawling. ANSWER DOWNLOAD EXAMIANS APP
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