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Electrical Machines

Electrical Machines
In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

 100
 50
 10
 1

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Electrical Machines
A single-winding single-phase motor has

 low starting torque.
  zero starting torque.
 high starting torque.
 starting torque equal to full-load torque.

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Electrical Machines
In DC generator, lap winding is used in

 where constant speed is required.
 high voltage and low current applications.
  high current and low voltage applications.
 where greater load is connected.

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Electrical Machines
Voltage regulation can be determined by which of the following?

 MMf method.
 Synchronous impedance method.
 ZPF method.
All of these

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Electrical Machines
When a synchronous motor is running at synchronous speed, the damper winding produces

 both 1 and 2.
 damping torqe.
 eddy current torque.
 no torque.

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Electrical Machines
In DC series motor the speed is ______________ proportional to the armature current.

 inversely.
 directly.
 has no relation.
 none of these.

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MORE MCQ ON Electrical Machines

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