As shown in the illustration, what is the...

Question 1 / 205eccefa4bacbc34ba4d48174

Question 1 of 205eccefa4bacbc34ba4d48174

As shown in the illustration, what is the purpose of the first set of primary windings (PRI.1) as impacted by the capacitor bank of the compounded self-excited alternator? See illustration EL-0079.

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Question 1 of 20

5eccefa4bacbc34ba4d48174

As shown in the illustration, what is the purpose of the first set of primary windings (PRI.1) as impacted by the capacitor bank of the compounded self-excited alternator? See illustration EL-0079.

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🔍 Key Concepts

• Trace how current flows from the capacitor bank through the reactor coils into PRI.1 in the excitation transformer. • Recall how a compounded self-excited alternator maintains its terminal voltage as load increases: part of the excitation comes from no‑load conditions and part changes with load. • Compare the roles of PRI.1 and PRI.2 in the excitation transformer and how each one responds (or does not respond) to changes in load current.

💭 Think About

• Looking at the illustration, does PRI.1 see current that changes when the load on the alternator changes, or is it fed from a more constant source? What does that imply about the kind of excitation it provides? • If the capacitor bank supplies leading reactive current, how would that affect the excitation current produced through PRI.1 when the alternator load increases? • In a compounded alternator, one part of the excitation system provides base/no‑load excitation and another part adds or subtracts excitation with load. From the diagram connections, which job is PRI.1 doing?

✅ Before You Answer

• Verify whether PRI.1 is directly involved in the no‑load build‑up of voltage from the capacitor bank, or if that is primarily handled elsewhere in the circuit. • Check if the current through PRI.1 increases or decreases as real/load current increases, i.e., is its effect on excitation proportional or inversely proportional to load. • Confirm that improving power factor would mainly be the job of the capacitor bank itself, not specifically of the PRI.1 windings.

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Question 1 of 20

As shown in the illustration, what is the purpose of the first set of primary windings (PRI.1) as impacted by the capacitor bank of the compounded self-excited alternator? See illustration EL-0079.

produce the alternator field excitation current associated with no-load operation

improve alternator power factor

produce additional excitation current beyond the no-load current inversely proportional to the actual load current

produce additional excitation current beyond the no-load current proportional to the actual load current

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Question 1 / 205eccefa4bacbc34ba4d48174

Question 1 of 205eccefa4bacbc34ba4d48174

As shown in the illustration, what is the purpose of the first set of primary windings (PRI.1) as impacted by the capacitor bank of the compounded self-excited alternator? See illustration EL-0079.

Back

Question 1 of 20

5eccefa4bacbc34ba4d48174

As shown in the illustration, what is the purpose of the first set of primary windings (PRI.1) as impacted by the capacitor bank of the compounded self-excited alternator? See illustration EL-0079.

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