By what means is the frequency of an...

Question 1 / 205eccefa4bacbc34ba4d4846d

Question 1 of 205eccefa4bacbc34ba4d4846d

By what means is the frequency of an alternator adjusted from the main switchboard?

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Question 1 of 20

5eccefa4bacbc34ba4d4846d

By what means is the frequency of an alternator adjusted from the main switchboard?

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🔍 Key Concepts

• Relationship between prime mover speed (engine or turbine) and AC frequency • Difference between measuring instruments (indicate frequency or phase) and control devices (actually change speed/load/voltage) • How the ship’s main engine/generator governor affects generator output characteristics

💭 Think About

• Which component on a main switchboard is used to actually CHANGE the alternator’s output frequency, not just display it? • What variable must be changed to alter AC frequency: voltage, speed, or phase angle? Which device controls that variable? • On a generator panel, which control is adjusted when matching frequency before paralleling two generators?

✅ Before You Answer

• Identify which options are indicating instruments only versus true control mechanisms • Recall that AC frequency is directly tied to rotational speed and number of poles, and only one of these options can change speed in normal operation • Think about which control you physically move when bringing another generator on the board and matching its frequency

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Question 1 of 20

By what means is the frequency of an alternator adjusted from the main switchboard?

frequency meter

voltage regulator

governor control

synchroscope switch

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Question 1 / 205eccefa4bacbc34ba4d4846d

Question 1 of 205eccefa4bacbc34ba4d4846d

By what means is the frequency of an alternator adjusted from the main switchboard?

Back

Question 1 of 20

5eccefa4bacbc34ba4d4846d

By what means is the frequency of an alternator adjusted from the main switchboard?

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

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