Why are external shunts sometimes used with...

Question 1 / 205eccefa3bacbc34ba4d47f48

Question 1 of 205eccefa3bacbc34ba4d47f48

Why are external shunts sometimes used with ammeters?

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5eccefa3bacbc34ba4d47f48

Why are external shunts sometimes used with ammeters?

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🔍 Key Concepts

• Ammeter basic principle – how an ammeter measures current (small internal movement that can only handle limited current) • Shunt resistor function – why we place a low‑resistance path in parallel with the meter movement • Difference between internal shunt (built-in) and external shunt (separate, often physically larger)

💭 Think About

• Think about what happens to a small, delicate meter movement when you must measure very large currents. What role does heat play in that situation? • Which option best explains a practical reason shipboard engineers might mount the shunt away from the meter itself? Consider temperature, space, and current-carrying capacity. • Ask yourself: does using an external shunt change the sensitivity of the meter movement, or mainly how the heavy current and heat are handled?

✅ Before You Answer

• Verify which choice deals with heat and high current in the shunt, not with power factor or resistance magnitude alone. • Eliminate any options that confuse current measurement with power factor (reactive power) – those are usually concerns with wattmeters, not simple ammeters. • Confirm that an external shunt allows the high current path and heat to be handled away from the delicate meter movement.

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Question 1 of 20

Why are external shunts sometimes used with ammeters?

to prevent damage to the meter movement from heat generated by the internal shunt

to reduce reactive power factor error

to permit shunts with larger resistances to be utilized

to increase meter sensitivity

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Question 1 / 205eccefa3bacbc34ba4d47f48

Question 1 of 205eccefa3bacbc34ba4d47f48

Why are external shunts sometimes used with ammeters?

Back

Question 1 of 20

5eccefa3bacbc34ba4d47f48

Why are external shunts sometimes used with ammeters?

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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