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Electrical Machines

Electrical Machines
In one 132 / 33 kV transformer the LV resistance is 0.02 per unit. The resistance referred to HV side is

  0.08 pu.
  0.02 pu.
 0.16 pu.
 0.01 pu.

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Electrical Machines
Conservator tank is used

 to take up the expansion of oil due to temperature rise.
 for better cooling of transformer.
None of these
 to act as an oil storage.

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Electrical Machines
The torque developed in IM is nearly proportional to

  V2.
  1 / V.
 1 / V2.
  V.

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Electrical Machines
Crawling in an induction motor is due to

  insufficient starting torque.
  space harmonics produced by winding currents.
  time harmonics in supply.
  slip ring rotor.

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Electrical Machines
DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by

 commutator
 starters
 field winding
 armature winding

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Electrical Machines
Breadth factor is defined as the ratio of

 both 1 and 2.
 emf with concentrated winding to emf with distributed winding.
None of these
 emf with distributed winding to emf with concentrated winding.

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