PU E 2026 Alternating Current Free Quiz 1

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PU E 2026 Alternating Current Free Quiz 1

PU E Quiz

10:00

Answered: 0 / 10

Remaining: 10

Navigator 10 Q

General

General 10 MCQs

1. What is alternating current?

A. Changes direction periodically B. Flows in one direction only C. Has constant magnitude D. Is always zero

2. What is the equation for AC voltage?

A. V = V₀ cos ωt B. V = V₀ tan ωt C. V = V₀ sin ωt D. V = V₀ e^(-t/RC)

3. What is the time period of AC with frequency 50 Hz?

A. 0.01 s B. 0.04 s C. 0.005 s D. 0.02 s

4. What is the formula for RMS value of AC current?

A. I₀/√2 B. I₀ C. I₀/2 D. √2 I₀

5. What is the formula for RMS value of AC voltage?

A. V₀ B. V₀/√2 C. V₀/2 D. √2 V₀

6. What is the average value of AC over a complete cycle?

A. I₀ B. I₀/2 C. Zero D. I₀/π

7. What is the peak voltage if RMS voltage is 220 V?

A. 220 V B. 110 V C. 440 V D. 311 V

8. What is the formula for inductive reactance?

A. X_C = 1/ωC B. X_L = ωL C. R = V/I D. Z = √(R² + X²)

9. How does capacitive reactance vary with frequency?

A. Increases with frequency B. Is independent of frequency C. Decreases with frequency D. Is zero at all frequencies

10. How does inductive reactance vary with frequency?

A. Decreases with frequency B. Is independent of frequency C. Is zero at all frequencies D. Increases with frequency

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⚡ Test Pattern (Total: 100 MCQs):

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