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Electrical Machines

Electrical Machines
Stepper motor is used in

 traction
 computer printers
All of these
 food processing

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Electrical Machines
A dc motor with armature resistance of 0.5 ohms connected directly to a 230 Volt supply. If the armature is stationary then the current flowing through armature is

  340 A.
  460 A.
 250 A.
 570 A.

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Electrical Machines
In above questions, find the power delivered by each of the alternators to a load of impedance 6Ω(resistive)

 6000 W, 7000 W.
 100 W, 2000 W.
  3190 W, 5040 W.
 1000 W, 5040 W.

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Electrical Machines
The three point starter is used for

  Shunt, compound and series motor.
  Series motor.
  Shunt motor.
  Shunt motor as well as compound motors.

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Electrical Machines
Generators work on the principle of production of

None of these
 statically induced emf.
 dynamically and statically induced emf.
 dynamically induced emf.

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Electrical Machines
For the purpose of starting an induction motor, star/delta switch is an equivalent to auto transformer of ratio

 33.3%
 66.3%
 57.7%
 50%

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