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Electrical Machines
In DC generator, armature reaction refers to what?
Effect of armature flux on the load.
Effect of field flux on the armature flux.
None of these
Effect of armature flux on the main field flux.
Effect of armature flux on the load.
Effect of field flux on the armature flux.
None of these
Effect of armature flux on the main field flux.
Answer
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Related Question
Electrical Machines
In synchronous motor, the damper winding is generally used to
provide starting torque only.
reduce the eddy currents.
reduce noise level only.
prevent hunting and provide the starting torque.
provide starting torque only.
reduce the eddy currents.
reduce noise level only.
prevent hunting and provide the starting torque.
Answer
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Electrical Machines
Which of the following is not a part of transformer?
Commutator.
Tap changer.
Conservator tank.
Radiator.
Commutator.
Tap changer.
Conservator tank.
Radiator.
Answer
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Electrical Machines
Which machine is used for battery charging?
DC shunt generator.
None of these.
Compounded DC generator.
DC series generator.
DC shunt generator.
None of these.
Compounded DC generator.
DC series generator.
Answer
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Electrical Machines
The stator core of a 3 - Φ induction motor is laminated in order to reduce the
both of the above.
weight of the stator.
hysteresis loss.
eddy current loss.
both of the above.
weight of the stator.
hysteresis loss.
eddy current loss.
Answer
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Electrical Machines
A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is
3/4.
9/16.
16/9.
4/3.
3/4.
9/16.
16/9.
4/3.
Answer
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