Practice Phase Angle (ϕ Or Θ) (1.2.4) - Fundamentals of AC Circuits - Basics of Electrical Engineering
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Phase Angle (ϕ or θ)

Practice - Phase Angle (ϕ or θ)

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does a positive phase angle indicate?

💡 Hint: Think about the timing relationship.

Question 2 Easy

What does a negative phase angle indicate?

💡 Hint: Consider when one waveform occurs relative to another.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does a phase angle of 90° indicate in an AC circuit?

Current leads Voltage
Voltage leads Current
They are in phase

💡 Hint: Think of inductive circuits.

Question 2

Is a phase angle of 0° indicative of leading, lagging, or in phase?

True
False

💡 Hint: Consider how they relate to each other.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Consider a circuit with voltage described as v(t) = 220 sin(100t + 45°) and current as i(t) = 10 sin(100t - 30°). Calculate the phase difference, and describe what it means for power calculations.

💡 Hint: Use the phase angle calculation and relate it to the power factor.

Challenge 2 Hard

You have an RLC circuit with the following values: R = 50Ω, L = 0.2H, and C = 20μF. Calculate the impedance and phase angle when connected to a 100V source at 50Hz.

💡 Hint: Calculate impedance before determining the phase angle.

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Reference links

Supplementary resources to enhance your learning experience.