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Electrical Machines
The principle of dynamically induced emf is utilized in
transformer.
generator.
choke.
thermocouple.
transformer.
generator.
choke.
thermocouple.
Answer
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Related Question
Electrical Machines
Essential conditions for two DC generators are connecting for parallel operation is/are
rating of generators should be same.
both A and B.
polarities should be same.
terminal voltage should be same.
rating of generators should be same.
both A and B.
polarities should be same.
terminal voltage should be same.
Answer
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Electrical Machines
The current drawn by the armature of DC motor is directly proportional to
The voltage across the terminals.
None of above.
The torque required.
The speed of motor.
The voltage across the terminals.
None of above.
The torque required.
The speed of motor.
Answer
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Electrical Machines
In DC machine shape of main field flux distribution is?
saddle shape
triangular
flat tapped or trapezoidal
peaky in nature
saddle shape
triangular
flat tapped or trapezoidal
peaky in nature
Answer
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Electrical Machines
Thin laminations are used in a machine in order to reduce
Both 1 and 2
Eddy current losses
Copper losses
Hysteresis losses
Both 1 and 2
Eddy current losses
Copper losses
Hysteresis losses
Answer
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Electrical Machines
In Ward-Leonard system, the lower limit of the speed imposed by
None of above.
Field resistance.
Residual magnetism of the generator.
Armature resistance.
None of above.
Field resistance.
Residual magnetism of the generator.
Armature resistance.
Answer
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