Which of the following statements is true...

Question 1 / 205eccefa4bacbc34ba4d48334

Question 1 of 205eccefa4bacbc34ba4d48334

Which of the following statements is true concerning the manual motor starter diagram shown in figure "A" of the illustration? See illustration EL-0023.

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Question 1 of 20

5eccefa4bacbc34ba4d48334

Which of the following statements is true concerning the manual motor starter diagram shown in figure "A" of the illustration? See illustration EL-0023.

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🔍 Key Concepts

• Trace each phase from L1, L2, L3 to T1, T2, T3 and count how many lines pass through an OL (overload) device. • Recall the difference between thermal overload protection (heaters/bimetal elements for running overload) and magnetic protection (instantaneous trip for short-circuit). • Note that a manual motor starter typically combines a switch with overload protection – the symbol "OL" is important.

💭 Think About

• Looking at figure A only, how many motor leads actually pass through devices labeled OL before going to the motor terminals? • Does the symbol used for OL look like a heater/bimetal (thermal) element in series with the line, or like a magnetic trip coil associated with a circuit breaker? • Is there any indication that only two lines are monitored for overload while one line bypasses the overload devices? Or are all three lines treated the same?

✅ Before You Answer

• Count carefully whether all three motor leads (T1, T2, T3) route through overload elements, or only two of them. • Confirm that the OL devices are in series with the motor lines, indicating thermal overload heaters rather than a separate magnetic trip unit. • Verify that no line to the motor bypasses overload protection; this will determine whether it is two-leg or three-leg protection.

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Question 1 of 20

Which of the following statements is true concerning the manual motor starter diagram shown in figure "A" of the illustration? See illustration EL-0023.

The motor has two-leg protection by thermal overloads.

The motor has three-leg protection by thermal overloads.

The motor has two-leg protection by magnetic overloads.

The motor has three-leg protection by magnetic overloads.

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Question 1 / 205eccefa4bacbc34ba4d48334

Question 1 of 205eccefa4bacbc34ba4d48334

Which of the following statements is true concerning the manual motor starter diagram shown in figure "A" of the illustration? See illustration EL-0023.

Back

Question 1 of 20

5eccefa4bacbc34ba4d48334

Which of the following statements is true concerning the manual motor starter diagram shown in figure "A" of the illustration? See illustration EL-0023.

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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