Electrical Machines
In a DC motor under constant terminal voltage what is the relation between torque (Te) and power (P)

 T∝ P²
 T is independent of P
 T∝ P³
 T∝ P

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

  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 direction of rotation will reverse.
 The motor will stop.

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