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Electrical Machines

Electrical Machines
In salient pole synchronous machine, maximum power occurs at a load angle of

 Greater than 90°
 90°
 less than 90°
 0°

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Electrical Machines
A DC generator beyond critical resistance will generate

 maximum current.
 maximum voltage.
 no voltage.
 maximum power.

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Electrical Machines
Series field consists of--------number of turns and ---------- conductors respectively

 large and thin
 large and thick
 less and thick
 less and thin

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Electrical Machines
Wave winding is employed in DC machine of

 low current and low voltage rating.
 high current and low voltage rating.
  low current and high voltage rating.
 high current and low voltage rating.

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Electrical Machines
If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be

 2000 rpm
 1000 rpm
 250 rpm
 500 rpm

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Electrical Machines
A shunt generator is running at 1000 rpm. If flux is reduced by half, then what is the new speed?

 1000.
 2000.
 0.
 500.

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MORE MCQ ON Electrical Machines

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