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Electrical Machines
Width of a carbon brush should be equal to
the width of the 1 to 2 commutator segment.
the width of the 2 to 3 commutator segment.
less than the width of commutator segment.
the width more than 3 commutator segment.
the width of the 1 to 2 commutator segment.
the width of the 2 to 3 commutator segment.
less than the width of commutator segment.
the width more than 3 commutator segment.
Answer
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Related Question
Electrical Machines
In field flux method speed control of DC Motor is
constant torque drive below the base speed.
constant hp drive below the base speed.
constant torque drive above the base speed.
constant power drive above base speed.
constant torque drive below the base speed.
constant hp drive below the base speed.
constant torque drive above the base speed.
constant power drive above base speed.
Answer
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Electrical Machines
Larger values of air flux density is taken while designing IM for
both.
larger output.
larger bore diameter.
none.
both.
larger output.
larger bore diameter.
none.
Answer
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Electrical Machines
Fifth harmonic component of the induced voltage in three phase AC generator can be eliminated by using a winding pitch of
2 / 3.
4 / 5.
6 / 7.
5 / 6.
2 / 3.
4 / 5.
6 / 7.
5 / 6.
Answer
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Electrical Machines
Lap winding is prefered for which type of machines?
low current and low voltage
high current and low voltage
high current and high voltage
low current and high voltage
low current and low voltage
high current and low voltage
high current and high voltage
low current and high voltage
Answer
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Electrical Machines
Torque developed in the rotor is
inversely proportional to slip
directly proportional to slip
either of these
not dependent on the slip
inversely proportional to slip
directly proportional to slip
either of these
not dependent on the slip
Answer
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