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Electric Machines Q2: A magnetization curve of a DC motor current yields an internally generated voltage...

Electric Machines

Q2: A magnetization curve of a DC motor current yields an internally generated voltage of 175 Volts is produced by this current at 1800 r/min. What is the rotational speed of the motor under no-load conditions if the terminal voltage is 150V?

Correct answer (need to see work):

1,543 r/min

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Homework Answers

Answer #1

CONDITION 1

CONDITION 2

We know that internal generated emf (E) is given by

So for condition 1 and condition 2

by cross multiplying we get,

or

(rpm= r/min)

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