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Electrical Machines

Electrical Machines
In above question, find rms line voltage for delta connection?

 50 V.
  230.2 V.
 100 V.
 399 V.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In double cage induction motor, the outer cage offers

  high resistance and high reactance.
  low resistance and low reactance.
  low resistance and high reactance.
  high resistance and low reactance.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC generator, if P be the number of poles and N be the rpm of the rotor, then frequency of magnetic reversals will be

 PN/120.
 PN/60.
 PN/2.
 PN/3000.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
When a synchronous motor is running at synchronous speed, the damper winding produces

 damping torqe.
 eddy current torque.
 no torque.
 both 1 and 2.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
In a DC Shunt Motor the speed can be increased by

 Increasing the armature current.
 Increasing the field current.
 Decreasing the field current.
 Increasing the field current.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
If the field current is reduced to zero the maximum power developed by alternator is

  2.73 KW.
 0.9103 KW.
 5.46 KW.
 1.644 KW.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines

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