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Electrical Machines

Electrical Machines
A DC generator beyond critical resistance will generate

 maximum voltage.
 no voltage.
 maximum power.
 maximum current.

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Electrical Machines
Ward Leonard control is provides speed control

  Below rated speed.
  Above rated speed.
  In both direction.
  In one direction only.

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Electrical Machines
The torque speed characteristics of a AC servomotor is approximately

 linearised
 any of the above
 parabola
 hyperbola

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Electrical Machines
A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is

 -1.92
 0.08
 1.92
 -0.08

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Electrical Machines
In a DC generator the actual flux distribution depends upon

  all of above.
  shape of the pole shoe.
  clearance between tips of the adjacent pole shoes.
 size of air gap.

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Electrical Machines
In DC shunt motor if load is increased, the speed

 increased slightly.
 increase proportional.
 reduce slightly.
 remains constant.

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MORE MCQ ON Electrical Machines

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