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Electrical Machines

Electrical Machines
The induction motor shaft is made of

  aluminium.
  cast iron.
  mild steel.
  stainless steel.

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Electrical Machines
For a practical synchronous motor the pull out torque will occur when the torque angle is nearly equal to

 30°.
 0°.
 45°.
  75°.

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Electrical Machines
Shunt field of DC generators consists of--------number of turns and ---------- conductors respectively

 less and thin
 large and thick
 large and thin
 less and thick

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Electrical Machines
In double cage induction motor, the inner cage offers

  low resistance and high reactance.
  high resistance and high reactance.
  low resistance and low reactance.
  high resistance and low reactance.

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Electrical Machines
For a DC machine having P no of pole pairs, Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for simple wave-winding ?

 PZL/4Sp²
 PZL/4S
 PZL/ 4Sa
 PZL/4Sa²

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Electrical Machines
A 4-pole generator with 16 coil has a two layer lap winding. The pole pitch is

 32.
  4.
 8.
 16.

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MORE MCQ ON Electrical Machines

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