Electrical Machines
A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors with armature resistance of 0.6 ohm. Calculate the starting current flowing through the armature if the supply voltage is 240 volt.

 320 Amp.
  0.5 Amp.
  400 Amp.
 800 Amp.

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Electrical Machines
When the supply terminal of a DC shunt motor are interchanged

 The motor will run much faster in the same direction.
 The direction of rotation will reverse.
 The motor will stop.
  The motor will run at its normal speed in the same direction as before.

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Electrical Machines
Which is the arrangement of windings in a core type single phase transformer?

 Half hv inside and half lv outside on each core limb
 Half lv inside and half hv outside on each core limb
 Sandwiched lv and hv discs on each core limb
 Lv on one core limb and hv on the other

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