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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define instantaneous power in AC circuits.
💡 Hint: Think about how voltage and current change over time.
Question 2
Easy
What does the average power represent in an AC circuit?
💡 Hint: Look for how power averages over time.
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 unit of reactive power?
- Watt
- Volt-Ampere
- VAR
💡 Hint: Remember the units related to energy not doing work.
Question 2
True or False: The power factor can exceed 1 in an AC circuit.
- True
- False
💡 Hint: Consider what the power factor represents.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
An AC circuit has a supply voltage of 120 V and an RMS current of 10 A, with a power factor of 0.75. Calculate the real power, reactive power, and apparent power.
💡 Hint: Use the formulas for real, apparent, and reactive power.
Question 2
In a certain AC load, if the real power consumed is 2000 W and the apparent power is 2500 VA, calculate the power factor and interpret its significance.
💡 Hint: Remember that power factor reflects how effectively the load uses electricity.
Challenge and get performance evaluation