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Electrical Machines

Electrical Machines
The field divertor resistance for a DC series motor is of order of

 10 Ω
 100 Ω
 50 Ω
 0.1 Ω

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Electrical Machines
Which of the following statements are correct ?

 A small value of leakage reactance will increase the maximum power output of motor.
None of these
 Both 1 and 2.
 The leakage reactance of the induction motor should be small.

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Electrical Machines
For larger units high torque it is preferred to use

 Universal motor.
 DC shunt motor.
 Partial motor.
 Slip induction motor.

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Electrical Machines
A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle?

 30°
 60°
 45°
 10°

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Electrical Machines
Compensating winding is placed in the

 main field
 armature core
All of these
 pole shoe

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Electrical Machines
Armature resistance control method is also called as-----------?

 constant voltage control
 constant torque control
 constant power control
 constant current control

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MORE MCQ ON Electrical Machines

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