Using the standard method of controlling the...

Question 1 / 270705eccefa4bacbc34ba4d481df

Question 1 of 270705eccefa4bacbc34ba4d481df

Using the standard method of controlling the output voltage of a 440 volt, 60 Hz, AC generator, by what means is this accomplished?

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Question 1 of 27070

Using the standard method of controlling the output voltage of a 440 volt, 60 Hz, AC generator, by what means is this accomplished?

🔍 Key Concepts

• Relationship between field excitation and generator output voltage • Effect of prime mover speed on frequency vs. voltage in a synchronous AC generator • How load changes affect terminal voltage compared to the built‑in voltage control method

💭 Think About

• Ask yourself: in a 60 Hz, 440 V ship’s alternator running at constant speed, which quantity is normally adjusted by the voltage regulator? • Consider what determines frequency (Hz) versus what determines terminal voltage in a synchronous AC generator. • Think about which option would be practical to vary continuously in normal operation without changing the machine’s physical construction.

✅ Before You Answer

• Verify which factor the automatic voltage regulator (AVR) actually senses and adjusts to maintain constant voltage. • Confirm that frequency is tied to prime mover speed and number of poles, not the normal method of voltage control once the machine is built. • Check which option can be changed electrically and smoothly during operation, rather than being fixed mechanically by design.

Question 1 of 27070

Using the standard method of controlling the output voltage of a 440 volt, 60 Hz, AC generator, by what means is this accomplished?

varying the prime mover speed droop

varying the number of poles

varying the alternator field excitation

varying the load on the alternator

Question 1 / 270705eccefa4bacbc34ba4d481df

Question 1 of 270705eccefa4bacbc34ba4d481df

Using the standard method of controlling the output voltage of a 440 volt, 60 Hz, AC generator, by what means is this accomplished?

Back

Question 1 of 27070

Using the standard method of controlling the output voltage of a 440 volt, 60 Hz, AC generator, by what means is this accomplished?