If field excitation is suddenly lost to an...

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Question 1 of 205eccefa4bacbc34ba4d481ad

If field excitation is suddenly lost to an alternator operating in parallel with another alternator, what will happen to the alternator that has experienced a loss of field excitation?

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5eccefa4bacbc34ba4d481ad

If field excitation is suddenly lost to an alternator operating in parallel with another alternator, what will happen to the alternator that has experienced a loss of field excitation?

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🔍 Key Concepts

• Loss of field excitation effect on an alternator’s magnetic field • How a synchronous alternator behaves when it loses excitation but is still mechanically driven and tied to a live bus • Difference between electrical load sharing and prime mover speed control when operating in parallel

💭 Think About

• When the alternator loses its DC field, what happens to its internal magnetic field and its ability to produce reactive power (VARs)? • If the alternator is still mechanically driven at constant speed and locked in step with another alternator on the bus, can it suddenly change speed a lot, or is something else more likely to change? • Think about whether it will start taking power from the bus or giving more power to the bus after losing excitation.

✅ Before You Answer

• Verify how a synchronous generator connected to a strong bus behaves when excitation is reduced or lost (does it tend to motor, trip, or change load?). • Check whether a machine that is still mechanically driven and synchronized to a bus can easily over speed or slow down without losing step. • Confirm whether loss of excitation would more likely cause excess current out to the bus or a loss of load / change in direction of power flow.

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Question 1 of 205eccefa4bacbc34ba4d481ad

If field excitation is suddenly lost to an alternator operating in parallel with another alternator, what will happen to the alternator that has experienced a loss of field excitation?

Back

Question 1 of 20

5eccefa4bacbc34ba4d481ad

If field excitation is suddenly lost to an alternator operating in parallel with another alternator, what will happen to the alternator that has experienced a loss of field excitation?

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