ELECTRICAL MACHINES QUIZ

 Power drawn in KVA.

 Gross power.

 Output power at the shaft.

 Power drawn in KW.

All of these

 closed slot----- leakage flux is high

 semi closed slot-----leakage flux is moderate

 open slot----- leakage flux is less

 The accuracy in speed control is required.

 Very fine speed control over the whole range from zero to normal speed is required.

 The speed in both the direction is required.

 All of above.

 eddy current loss.

 ohmic loss.

  hysteresis loss.

 both eddy current and hysteresis loss.

 helps in energy conversion.

 exceeds supply voltage

 aids applied voltage.

 regulates its armature voltage.

 Amperes law.

 Newtons law.

 Faradays law of electromagnetic induction.

 Coulombs law.

 2/√5

 1/√2

 1/√5

 1/3

 is located on commutating poles for improving commutation.

  is located on pole shoes for avoiding the flashover at the commutator.

 is located in armature slots for compensation of the armature reaction.

  is located on pole shoes to avoid the sparking at the brushes.

 0.72.

 0.62.

 0.25.

 1.24.

 quadrature axis and interpolar axis

 quadrature axis and direct axis

 direct axis and indirect axis

 direct axis and interpolar axis