Why is motorization of an AC generator...

Question 1 / 205eccefa4bacbc34ba4d48161

Question 1 of 205eccefa4bacbc34ba4d48161

Why is motorization of an AC generator undesirable?

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5eccefa4bacbc34ba4d48161

Why is motorization of an AC generator undesirable?

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🔍 Key Concepts

• Synchronous generator acting as a motor ("motoring" or "motorization") • Effect of a motoring generator on the prime mover (diesel/turbine) and the electrical bus • What actually happens to power flow and mechanical torque when a generator is accidentally driven by the system

💭 Think About

• When a generator is correctly on the line, is it supplying power to the bus or taking power from it? What changes during motorization? • Think about the shaft: if the generator begins to act like a motor, what will it try to do to the attached engine or turbine? Reverse its direction, or drive it in the same direction? • In AC shipboard alternators, is there usually a commutator that can be damaged, or is the construction different from a DC machine?

✅ Before You Answer

• Identify whether reversal of rotation actually occurs in typical motoring incidents, or whether the speed/torque changes in another way • Confirm whether a ship’s AC generator normally has a commutator or slip rings • Decide whether the most serious concern during motorization is mechanical stress on the prime mover, excessive electrical loading of the bus, or some other specific effect

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Question 1 of 20

Why is motorization of an AC generator undesirable?

The generator will be damaged when it reverses its rotation.

It puts an excessive load on the bus.

High voltage pulses may damage the commutator.

The prime mover will be damaged when it reverses its rotation.

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Question 1 / 205eccefa4bacbc34ba4d48161

Question 1 of 205eccefa4bacbc34ba4d48161

Why is motorization of an AC generator undesirable?

Back

Question 1 of 20

5eccefa4bacbc34ba4d48161

Why is motorization of an AC generator undesirable?

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

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