By what common means is the speed of the AC...

Question 1 / 205eccefa4bacbc34ba4d485d7

Question 1 of 205eccefa4bacbc34ba4d485d7

By what common means is the speed of the AC propulsion motor on a diesel-electric propulsion ship controlled?

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Question 1 of 20

5eccefa4bacbc34ba4d485d7

By what common means is the speed of the AC propulsion motor on a diesel-electric propulsion ship controlled?

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🔍 Key Concepts

• Difference between AC motors and DC motors in how speed is controlled • Relationship between synchronous speed and frequency for AC motors • Why changing voltage vs. changing frequency affects torque versus speed

💭 Think About

• Ask yourself: For an AC motor, what electrical quantity directly determines its synchronous speed? • Think about which control method is most efficient and commonly used on modern diesel-electric ships with large propulsion motors. • Consider: Does changing voltage alone normally change the speed of an AC motor significantly, or does it mainly affect the motor’s torque and ability to carry load?

✅ Before You Answer

• Recall the formula for synchronous speed of an AC motor and identify which variable you can adjust from the generator or drive system. • Verify which option refers to frequency rather than voltage or current. • Make sure you distinguish between typical control of DC motors (armature voltage/current) and AC propulsion motors (frequency-based control).

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Question 1 of 20

By what common means is the speed of the AC propulsion motor on a diesel-electric propulsion ship controlled?

by increasing the current to the motor

by decreasing the motor voltage

by increasing the motor voltage

by varying the input frequency of the voltage to the motor

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Question 1 / 205eccefa4bacbc34ba4d485d7

Question 1 of 205eccefa4bacbc34ba4d485d7

By what common means is the speed of the AC propulsion motor on a diesel-electric propulsion ship controlled?

Back

Question 1 of 20

5eccefa4bacbc34ba4d485d7

By what common means is the speed of the AC propulsion motor on a diesel-electric propulsion ship controlled?

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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