If the field current of a paralleled AC...

Question 1 / 205eccefa4bacbc34ba4d4817f

Question 1 of 205eccefa4bacbc34ba4d4817f

If the field current of a paralleled AC generator is increased above normal, what will be the net result to the VAR's and power factor?

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Question 1 of 20

5eccefa4bacbc34ba4d4817f

If the field current of a paralleled AC generator is increased above normal, what will be the net result to the VAR's and power factor?

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🔍 Key Concepts

• Reactive power (VARs) in AC generators and what causes them to change • Effect of increasing excitation/field current on the generator’s power factor when operating in parallel • Difference between lagging and leading power factor in terms of reactive current flow (toward or from the bus)

💭 Think About

• When you increase the field current of a generator in parallel, are you making its internal voltage higher or lower relative to the bus? How does that affect reactive current flow? • Think about which condition (over‑excited or under‑excited) makes a synchronous generator behave more like an inductor (lagging) and which makes it behave more like a capacitor (leading). • How does a change in reactive power (VARs) typically show up in the power factor reading: does more VARs push PF closer to 1.0 or further away, and in which direction (lagging vs leading)?

✅ Before You Answer

• Be clear on the definition: lagging PF = current lags voltage (inductive load); leading PF = current leads voltage (capacitive load). • Remember that changing field current mainly changes reactive power (VARs), not the real kW, in a paralleled system with the governor holding load. • Before choosing, mentally match: higher excitation ↔ over‑excited ↔ ? PF direction ↔ ? change in VARs.

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Question 1 of 20

If the field current of a paralleled AC generator is increased above normal, what will be the net result to the VAR's and power factor?

VAR's will increase and the power factor will be more lagging

VAR's will increase and the power factor will be more leading

VAR's will decrease and the power factor will be more lagging

VAR's will decrease and the power factor will be more leading

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Question 1 / 205eccefa4bacbc34ba4d4817f

Question 1 of 205eccefa4bacbc34ba4d4817f

If the field current of a paralleled AC generator is increased above normal, what will be the net result to the VAR's and power factor?

Back

Question 1 of 20

5eccefa4bacbc34ba4d4817f

If the field current of a paralleled AC generator is increased above normal, what will be the net result to the VAR's and power factor?

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