In a circuit where the AC voltage and...

Question 1 / 20Yv1ko7D3i9cYGV3y3qpE

Question 1 of 20Yv1ko7D3i9cYGV3y3qpE

In a circuit where the AC voltage and current are out of phase, how can the true power be determined?

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Question 1 of 20

Yv1ko7D3i9cYGV3y3qpE

In a circuit where the AC voltage and current are out of phase, how can the true power be determined?

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🔍 Key Concepts

• Apparent power (VA) vs true (real) power (W) in AC circuits • Meaning of power factor (PF) and its relationship to phase angle between voltage and current • Basic formula connecting apparent power (S), true power (P), and power factor (PF)

💭 Think About

• How is apparent power calculated from RMS voltage and RMS current in an AC circuit? • What does the power factor numerically represent in terms of how much of the apparent power is doing useful work? • Which mathematical operation would you use if power factor tells you "what fraction" of apparent power is real power?

✅ Before You Answer

• Recall and write down the formula relating P (true power), S (apparent power), and PF (power factor). • Check which choice correctly reflects a fraction of apparent power, not more than or less than it in the wrong way. • Verify which option uses both apparent power and power factor together, instead of ignoring one of them.

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Question 1 of 20

In a circuit where the AC voltage and current are out of phase, how can the true power be determined?

By multiplying the apparent power times the power factor.

By subtracting the apparent power from the power factor.

By dividing the apparent power by the power factor.

By multiplying the RMS voltage times the RMS current.

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Question 1 / 20Yv1ko7D3i9cYGV3y3qpE

Question 1 of 20Yv1ko7D3i9cYGV3y3qpE

In a circuit where the AC voltage and current are out of phase, how can the true power be determined?

Back

Question 1 of 20

Yv1ko7D3i9cYGV3y3qpE

In a circuit where the AC voltage and current are out of phase, how can the true power be determined?

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