If a magnetic controller contactor fails to...

Question 1 / 205eccefa4bacbc34ba4d48509

Question 1 of 205eccefa4bacbc34ba4d48509

If a magnetic controller contactor fails to pick up when the coil voltage is applied to the contactor coil, what would likely be the cause?

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Question 1 of 20

5eccefa4bacbc34ba4d48509

If a magnetic controller contactor fails to pick up when the coil voltage is applied to the contactor coil, what would likely be the cause?

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🔍 Key Concepts

• Magnetic contactor operation – how the coil and armature work together to pull in the contacts • Difference between mechanical problems (springs, alignment, contacts) and electrical problems (coil continuity, voltage) • What condition must exist inside the coil circuit for the magnetic field to be strong enough to pull in the armature

💭 Think About

• Ask yourself: if voltage is applied to the coil but the contactor never pulls in, what does that tell you about the magnetic field being produced? • Which choice describes a condition that would completely prevent current from flowing and a magnetic field from forming in the coil? • Which other choices would more likely cause chattering, overheating, or poor contact rather than total failure to pick up?

✅ Before You Answer

• Check which option would completely interrupt the coil circuit so no magnetic field can be produced. • Check which options are mainly mechanical issues that might affect contact pressure or wear but would not stop the coil from energizing. • Verify that your chosen option explains a total failure to pick up, not just weak operation or nuisance tripping.

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Question 1 of 20

If a magnetic controller contactor fails to pick up when the coil voltage is applied to the contactor coil, what would likely be the cause?

overload

misalignment of the affected contactor contacts

low spring pressure

an open contactor coil

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Question 1 / 205eccefa4bacbc34ba4d48509

Question 1 of 205eccefa4bacbc34ba4d48509

If a magnetic controller contactor fails to pick up when the coil voltage is applied to the contactor coil, what would likely be the cause?

Back

Question 1 of 20

5eccefa4bacbc34ba4d48509

If a magnetic controller contactor fails to pick up when the coil voltage is applied to the contactor coil, what would likely be the cause?

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