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Electrical Machines
If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will
depend on other factors.
increase by 5 %.
remain unchanged.
reduce by 5 %.
depend on other factors.
increase by 5 %.
remain unchanged.
reduce by 5 %.
Answer
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Related Question
Electrical Machines
In above question, find rms line voltage for delta connection?
230.2 V.
50 V.
399 V.
100 V.
230.2 V.
50 V.
399 V.
100 V.
Answer
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Electrical Machines
The armature of DC motor is laminated
to reduce the eddy current loss.
to reduce the mass.
to reduce the inductor.
to reduce the hysteresis loss.
to reduce the eddy current loss.
to reduce the mass.
to reduce the inductor.
to reduce the hysteresis loss.
Answer
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Electrical Machines
The power input to a 3 - φ induction motor is 60 kW and stator loss is 1 kW the rotor cu loss per phase is
1.
slip X 59 / 3.
slip X 50 / 3.
slip X 69 / 3.
1.
slip X 59 / 3.
slip X 50 / 3.
slip X 69 / 3.
Answer
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Electrical Machines
Eddy current loss will depends on
Flux density
Frequency
All of these
Thickness
Flux density
Frequency
All of these
Thickness
Answer
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Electrical Machines
If input of a transformer is square wave the output will be
square wave.
sine wave.
pulsed wave.
triangular wave.
square wave.
sine wave.
pulsed wave.
triangular wave.
Answer
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