Electrical Machines
A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be

None of these
 pulsating and unidirectional
 oscillating
 steady and unidirectional

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

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