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Electrical Machines

Electrical Machines
Eb/V ratio of a DC motor is an indication of

 Running Torque.
  Effiency.
 Speed regulation.
 Starting torque.

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Electrical Machines
In a DC compound motor the field regulator is provided to

 control the field flux.
 limit the armature current.
 demagnetize the field partially.
 control the armature flux.

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Electrical Machines
Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW?

 45 HZ
 50 Hz
 48.5 Hz
 48 Hz

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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.
 Power drawn in KVA.
 Gross power.

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Electrical Machines
Transformers operating in parallel will share the load depending upon their

 rating.
 percentage impedance.
 leakage reactance.
 efficiency.

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Electrical Machines
The use of double squirrel cage winding on the rotor provides

 reduced starting torque.
 low noise.
 higher efficiency.
  a large starting torque.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines

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