In referring to the illustration of the...

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Question 1 of 2066636eed28f7522a1c51d9b4

In referring to the illustration of the elementary DC generator, what statement is true? Illustration EL-0028

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Question 1 of 20

66636eed28f7522a1c51d9b4

In referring to the illustration of the elementary DC generator, what statement is true? Illustration EL-0028

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🔍 Key Concepts

• Commutator action in a DC generator and what it does to the connection between the armature conductors and the external circuit • How the direction of induced EMF in a rotating loop changes as it moves through different positions in the magnetic field • Difference between current direction in the rotating armature conductors and current direction through the stationary external load

💭 Think About

• As the loop (conductors A and B) rotates from position A to B to C to D in the figure, what happens to the polarity of the induced voltage in each conductor relative to the field? • When the loop passes the neutral plane and the commutator segments swap brushes, does this swap keep the same terminal of the load positive, or does the load see its polarity reverse? • Compare the current path through the armature at position B and at position D: is the current in a given side of the loop flowing the same way or opposite, and what does the load "see" at its terminals in each case?

✅ Before You Answer

• Trace the current path at two opposite positions of rotation (e.g., B and D) and mark the direction of current in each armature side. • Verify what the commutator is doing at the instant the loop passes the neutral plane: which armature side is connected to the positive brush before and after? • Confirm whether the load terminals (+ and −) keep the same polarity during one full revolution, even though the coil sides exchange brushes due to rotation.

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Question 1 of 2066636eed28f7522a1c51d9b4

In referring to the illustration of the elementary DC generator, what statement is true? Illustration EL-0028

Back

Question 1 of 20

66636eed28f7522a1c51d9b4

In referring to the illustration of the elementary DC generator, what statement is true? Illustration EL-0028

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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