Electrical Machines At what power factor, the voltage regulation of a transformer can be zero ? Lagging power factor. Unity power factor. Leading power factor. Zero power factor. Lagging power factor. Unity power factor. Leading power factor. Zero power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 1 - 2 µF. 2 - 3 µF. 5 - 10 F. 0.1 µF. 1 - 2 µF. 2 - 3 µF. 5 - 10 F. 0.1 µF. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor used in hair dryers? Synchronous motors. Split phase IM. Cage induction motor. Shaded pole IM. Synchronous motors. Split phase IM. Cage induction motor. Shaded pole IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be PN/3000. PN/60. PN/2. PN/120. PN/3000. PN/60. PN/2. PN/120. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as None of these an induction motor an induction generator a synchronous motor None of these an induction motor an induction generator a synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is minimized by laminating the core of a transformer? Copper loss. Hysteresis loss. Eddy current loss. Stray loss. Copper loss. Hysteresis loss. Eddy current loss. Stray loss. ANSWER DOWNLOAD EXAMIANS APP
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