Which of the following statements is true...

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Question 1 of 2066636eed28f7522a1c51d604

Which of the following statements is true concerning the motor controller circuit shown in the illustration? Illustration EL-0004

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Question 1 of 20

66636eed28f7522a1c51d604

Which of the following statements is true concerning the motor controller circuit shown in the illustration? Illustration EL-0004

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🔍 Key Concepts

• Identify how many contactors are used for the motor power circuit and whether any leads are crossed to reverse phase sequence. • Look at the control circuit around the start/stop station to decide if the circuit "drops out" on loss of power and requires manual restart (low-voltage release vs low-voltage protection). • Check if there are any extra contactors, resistors, or autotransformer taps that would indicate reduced-voltage starting rather than full-voltage starting.

💭 Think About

• Compare what is required to reverse a three‑phase squirrel‑cage motor with what is actually wired to the motor terminals U, V, and W in the drawing. • Ask yourself what happens to the KM1 coil and its holding circuit if the supply to T1 is lost and then comes back on. • Look for any components whose only purpose would be to limit or step down the voltage applied to the motor during starting. Do you see them in this diagram?

✅ Before You Answer

• Verify whether there is only one main contactor (KM1) feeding the motor or two mechanically interlocked contactors for forward/reverse. • Verify whether the stop button and overload contacts are normally closed in series with the contactor coil, and whether the start button uses an auxiliary holding contact on KM1. • Verify whether the power circuit shows any series resistors, autotransformer windings, or additional contactors that would switch from start to run connection.

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Question 1 of 2066636eed28f7522a1c51d604

Which of the following statements is true concerning the motor controller circuit shown in the illustration? Illustration EL-0004

Back

Question 1 of 20

66636eed28f7522a1c51d604

Which of the following statements is true concerning the motor controller circuit shown in the illustration? Illustration EL-0004

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?

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