OHM'S LAW QUIZ

 supply voltage and field current at constant excitation

 power factor and supply voltage during hunting

 power factor and dc excitation at constant load

All of these

 will become lagging

 will remain the same

 will become leading

None of these

 any of the above.

 increase.

 remain constant.

 decrease.

  decreasing of frequency.

  increasing of frequency.

  increasing number of poles.

  speed can not be increased.

All of these

 electro graphite → large ratings

 copper graphite → low voltage high current density

 carbon brush → normal ratings

 None of above.

 Residual magnetism of the generator.

 Field resistance.

 Armature resistance.

 Field flux.

 Applied voltage.

 All of these.

 Armature current Ia.

 differential compound.

 series.

 cumulative compound.

 shunt.

 compound motors.

 series motors.

 shunt motors.

All of these

  The motor will run at its normal speed in the same direction as before.

 The direction of rotation will reverse.

 The motor will run much faster in the same direction.

 The motor will stop.