Brushes in a DC generator must be positioned...

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Question 1 of 205eccefa3bacbc34ba4d48032

Brushes in a DC generator must be positioned in the neutral plane to avoid excessive sparking associated with the brushes. What device is used to prevent the shifting of the neutral plane due to armature reaction for varying generator loads.

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🔍 Key Concepts

• Armature reaction in a DC generator and how it affects the neutral plane • The specific winding or pole whose job is to counteract armature reaction at varying loads • Difference between main field poles, armature windings, and any auxiliary poles/windings

💭 Think About

• Which component is specifically added to correct the distortion of the main field caused by load current in the armature? • Among the options, which winding or pole is NOT primarily for generating the main field or carrying the main output current, but for improving commutation? • Think about which device is located near the brushes and is designed to reduce sparking as load changes.

✅ Before You Answer

• Verify which option is designed primarily to improve commutation and reduce sparking rather than to produce the main magnetic field or output power • Check which device is placed in series with the armature so its effect changes with load current • Eliminate any answer that just describes the main field system or the armature itself without a special commutation function

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