How is the direction of rotation of the main...

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Question 1 of 205eccefa4bacbc34ba4d485e4

How is the direction of rotation of the main propulsion motor in a modern AC propulsion drive system reversed?

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5eccefa4bacbc34ba4d485e4

How is the direction of rotation of the main propulsion motor in a modern AC propulsion drive system reversed?

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🔍 Key Concepts

• AC propulsion motor control vs. DC motor control • How phase sequence of a three-phase AC supply affects rotation direction • Role of field winding and armature current in DC motors, not modern AC drives

💭 Think About

• Ask yourself: In a three-phase AC motor, what actually determines the direction of the rotating magnetic field? • Which choices describe methods used mainly with DC motors (field and armature current changes) rather than modern AC propulsion drives? • Does a power directional relay normally control motor rotation, or does it serve a protective/monitoring function?

✅ Before You Answer

• Identify which options refer to three‑phase AC supply characteristics • Eliminate options that are typical of DC motor control methods • Consider the normal purpose of directional relays in power systems: control of direction or protection/indication?

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Question 1 of 205eccefa4bacbc34ba4d485e4

How is the direction of rotation of the main propulsion motor in a modern AC propulsion drive system reversed?

Back

Question 1 of 20

5eccefa4bacbc34ba4d485e4

How is the direction of rotation of the main propulsion motor in a modern AC propulsion drive system reversed?

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