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

 250 A.
 340 A.
 570 A.
 460 A.

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

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

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