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Electrical Machines

Electrical Machines
DC shunt motors are suitable for

 Centrifugal pumps
 Lathes.
 Blowers and fans.
  All of this.

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Electrical Machines
Commutators in DC machines have a role of which converts

 high voltage DC to low voltage DC.
 none of these.
 Both AC to DC and DC to AC.
 AC to DC.

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Electrical Machines
The output power indicated on the name plate of any motor is always the

 Power drawn in KW.
 Output power at the shaft.
 Gross power.
 Power drawn in KVA.

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Electrical Machines
Direction of rotation of DC motor is reversed by

 Reversing armature connection or field connection.
 Interchanging armature and field connection.
 Reversing supply connection.
 Adding resistance to field circuit.

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Electrical Machines
The power developed by salient pole synchronous machine is/are

None of these
 power due to saliency or reluctance only
 both 1 and 2
 excitation power only

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Electrical Machines
The shaft of induction motor should be

  hollow.
  flexible.
  any of these.
  stiff.

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MORE MCQ ON Electrical Machines

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