By what means is the burning of controller...

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Question 1 of 205eccefa4bacbc34ba4d482b3

By what means is the burning of controller contacts due to arcing, when opening, prevented?

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5eccefa4bacbc34ba4d482b3

By what means is the burning of controller contacts due to arcing, when opening, prevented?

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🔍 Key Concepts

• Electrical arcing in switches and controllers – what happens when you interrupt current in a magnetic field • How contacts are protected in high‑current DC or AC motor controllers • Difference between protective releases (overcurrent/overvoltage) and devices that physically move or stretch the arc

💭 Think About

• Think about which choice actually acts on the arc itself at the contacts, rather than just tripping or releasing the circuit on a fault condition. • Which option would be used specifically in high-current controllers (like motor starters) to lengthen, move, or extinguish the arc when the contacts open? • Consider whether applying a substance on the contacts is standard marine electrical practice for arc prevention, or if that would cause other problems like contamination or heating.

✅ Before You Answer

• Identify which options are protective trip devices and which one is a mechanism to control the arc path. • Ask: which method is commonly used in DC motor controllers and contactors to ‘blow’ the arc away from the contacts? • Verify whether any standard electrical practice recommends petroleum jelly on contact faces, or if contact surfaces are usually kept clean, flat, and properly aligned instead.

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Question 1 of 205eccefa4bacbc34ba4d482b3

By what means is the burning of controller contacts due to arcing, when opening, prevented?

Back

Question 1 of 20

5eccefa4bacbc34ba4d482b3

By what means is the burning of controller contacts due to arcing, when opening, prevented?

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