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Electrical Machines

Electrical Machines
In an induction motor, the no-load slip is generally equal to

  zero.
 1.5 %.
 4 %.
  less than 1 %.

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Electrical Machines
Quadrature axis synchronous reactance is the ratio of

 Vmax to Imax.
 Vmin to Imin.
 Vmin to Imax.
 Vmax to Imin.

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Electrical Machines
The output power of a dc motor is given by

  none of these.
  EbIa.
  EbIa2.
  EIa.

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Electrical Machines
The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce

 copper loss.
 eddy electric current loss.
 hysteresis loss.
 vibrations.

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Electrical Machines
High starting torque and low starting current is the advantage of

  squirrel cage induction motor.
  hysteresis motor.
  slip ring induction motor.
  stepper motor.

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Electrical Machines
Two transformers operating in parallel will share the load depending on their

 per unit impedance
 efficiency
 ratings
 leakage reactance

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