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Electrical Machines

Electrical Machines
Belt conveyors offer _______________ starting torque.

  high.
  zero.
  low.
  medium.

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Electrical Machines
If the air gap of IM is increased, ____________ will increase.

  air gap flux.
  magnetizing current.
  speed.
  power factor.

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Electrical Machines
In a seperately excited DC Motor if field current is increased, it will

 Reduce starting torque.
 Increase acceleration duration.
 Increase speed
 Reduce armature heating.

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Electrical Machines
The dc motor which can provide zero speed regulation at full load without any controller, is

 cumulative compound.
 series.
 differential compound.
 shunt.

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Electrical Machines
Which of the following machine will have maximum efficiency?

 Electrical power generator.
 DC motor.
 Induction motor.
  Electrical power transformer.

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Electrical Machines
In DC machine torque depends on which of the following?

 both A and B
 flux (φ)
 speed
 armature current (I)

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MORE MCQ ON Electrical Machines

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