Which of the listed conditions will occur if...

Question 1 / 205eccefa3bacbc34ba4d48099

Question 1 of 205eccefa3bacbc34ba4d48099

Which of the listed conditions will occur if dirt and grease are allowed to accumulate between the commutator segments of a DC motor?

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Question 1 of 20

5eccefa3bacbc34ba4d48099

Which of the listed conditions will occur if dirt and grease are allowed to accumulate between the commutator segments of a DC motor?

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🔍 Key Concepts

• DC motor construction – especially the commutator, brushes, and armature windings • Difference between a partial short circuit and a dead short circuit in electrical equipment • How dirt/grease between conductive segments affects current paths

💭 Think About

• Think about what the commutator segments are supposed to do individually. What happens if conductive material bridges two or more segments together? • Which options describe mechanical problems, and which describe electrical problems? Focus on what dirt and grease between segments would actually change. • Would dirt and grease more likely cause a complete loss of resistance (zero ohms) or just a reduced/alternate path for current?

✅ Before You Answer

• Identify which choices are electrical faults versus mechanical or speed-related effects. • Decide whether contamination between segments is more likely to create some unintended current paths or a solid, zero-resistance path. • Recall that the commutator segments are insulated from each other; consider what happens if that insulation is bridged by conductive contamination.

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Question 1 of 20

Which of the listed conditions will occur if dirt and grease are allowed to accumulate between the commutator segments of a DC motor?

A partial short circuit.

A dead short circuit.

Misalignment of the motor shaft.

Over speeding of the motor.

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Question 1 / 205eccefa3bacbc34ba4d48099

Question 1 of 205eccefa3bacbc34ba4d48099

Which of the listed conditions will occur if dirt and grease are allowed to accumulate between the commutator segments of a DC motor?

Back

Question 1 of 20

5eccefa3bacbc34ba4d48099

Which of the listed conditions will occur if dirt and grease are allowed to accumulate between the commutator segments of a DC motor?

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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed