An AC generator operating in parallel loses...

Question 1 / 205eccefa4bacbc34ba4d481c8

Question 1 of 205eccefa4bacbc34ba4d481c8

An AC generator operating in parallel loses its excitation without tripping the circuit breaker. What will be the result?

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Question 1 of 20

5eccefa4bacbc34ba4d481c8

An AC generator operating in parallel loses its excitation without tripping the circuit breaker. What will be the result?

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🔍 Key Concepts

• Excitation loss in an AC generator and what happens to the field current and magnetic field • How a generator behaves when paralleled with others on the same bus • Flow of current between a de‑excited machine and the bus (motoring or transformer-like action)

💭 Think About

• Think about what happens to the magnetic field in the generator when excitation is lost. Does the generator still produce its own strong field, or does it rely on the system? • If the generator is still mechanically driven and connected to a live bus, what will the bus voltage and other generators try to do to the machine that lost excitation? • Would any dangerous effect more likely appear in the mechanical parts (like slip rings) or in the electrical windings (field and stator)?

✅ Before You Answer

• Verify what loss of excitation means: field current drops to nearly zero, so the generator’s own magnetic field collapses. • Consider whether the machine might start to act like a motor or synchronous condenser/transformer, drawing heavy current from the bus instead of supplying it. • Check which option mentions high currents in windings versus effects that are only mechanical or that say there is “no effect.”

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Question 1 of 20

An AC generator operating in parallel loses its excitation without tripping the circuit breaker. What will be the result?

It will cause the slip rings to melt.

It will increase the output amperage between the armature and the bus.

It will not affect the faulty generator due to the compensation of the other generators.

It will cause high currents to be induced in the field and stator windings.

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Question 1 / 205eccefa4bacbc34ba4d481c8

Question 1 of 205eccefa4bacbc34ba4d481c8

An AC generator operating in parallel loses its excitation without tripping the circuit breaker. What will be the result?

Back

Question 1 of 20

5eccefa4bacbc34ba4d481c8

An AC generator operating in parallel loses its excitation without tripping the circuit breaker. What will be the result?

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