Practice Activities/assessments (8) - Fundamentals of AC Circuits - Basics of Electrical Engineering
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Activities/Assessments

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

Convert the phasor I=10∠-30° A to time-domain.

💡 Hint: Convert using i(t) = I_peak sin(ωt + phase angle).

Question 2 Easy

What is the formula for calculating inductive reactance?

💡 Hint: Remember that ω is determined by the frequency.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the formula for calculating real power in AC circuits?

P = VRMS IRMS cos(ϕ)
P = VRMS IRMS
P = VI

💡 Hint: Recall the significance of cos(ϕ) in calculating power.

Question 2

True or False: At resonance in an RLC circuit, the impedance is maximum.

True
False

💡 Hint: Think about how inductive and capacitive reactance behave at resonance.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

An RLC circuit consists of a resistor (R=10Ω), inductor (L=0.2H), and capacitor (C=100μF). Determine the resonant frequency and total impedance at resonance.

💡 Hint: Remember to calculate LC before moving to the frequency.

Challenge 2 Hard

Given an AC circuit with VRMS=120V, an inductive reactance of 40Ω, and a capacitive reactance of 30Ω, calculate the total current drawn from the source.

💡 Hint: Convert reactance into impedance using phasor form.

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