Practice Phase Angle (5.3) - Electromagnetic Induction and Alternating

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6 sample questions

Question 1.
Define phase angle in the context of AC circuits.
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Think about how voltage and current waveforms interact.
Question 2.
What does it mean if the phase angle is positive?
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Think about inductors and their behavior.
3Question 3.
What does a positive phase angle in an AC circuit indicate?
- The circuit is resistive
- The circuit is inductive
- The circuit is capacitive
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Think about how inductors behave in circuits.
4Question 4.
True or False: A phase angle of 0 degrees indicates perfect power factor.
- True
- False
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Consider what it means for waveforms to align perfectly.
Question 5.
An AC circuit has R=5Ω, X_L=15Ω, and X_C=10Ω. Calculate the phase angle and explain the type of circuit.
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Remember to apply inverse tangent to find the angle.
Question 6.
In a practical setting, if an engineer discovers a circuit has a phase angle of -25 degrees, what should they do to correct it and improve efficiency?
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What components affect reactance in AC circuits?

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