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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does Imax represent in the AC waveform equation?
π‘ Hint: Think about the highest point of the wave.
Question 2
Easy
What does the phase angle (Ο) indicate?
π‘ Hint: It shows where the wave starts.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the formula to calculate instantaneous current in a sinusoidal AC wave?
- I(t) = Imax * cos(Οt + Ο)
- I(t) = Imax * sin(Οt + Ο)
- I(t) = Imax * tan(Οt + Ο)
π‘ Hint: Recall the sine function is used for AC representation.
Question 2
True or False: The phase angle (Ο) represents the initial timing of the current wave.
- True
- False
π‘ Hint: Think about where the wave starts in time.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If a sinusoidal wave has a frequency of 120 Hz and the maximum current is 15 A, calculate the instantaneous current at t = 0.005 seconds.
π‘ Hint: Convert frequency into angular frequency and substitute into the wave equation.
Question 2
Two AC signals with phase angles of 0Β° and 90Β° respectively are combined. What is the phase difference, and how does this impact their resultant power factor?
π‘ Hint: Consider how such angles relate to efficiency in an AC circuit.
Challenge and get performance evaluation