Practice - Power in Three-Phase Circuits (Balanced Systems)
Practice Questions
Test your understanding with targeted questions
What is a three-phase system?
💡 Hint: Think about how many phases are used.
Define star connection.
💡 Hint: Consider the layout of the windings.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is one major advantage of three-phase systems?
💡 Hint: Think about efficiency in power transmission.
True or False: In a delta connection, the line voltage equals the phase voltage.
💡 Hint: Recall the definitions of delta connections.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A balanced three-phase system with a line voltage of 400 V and a line current of 30 A draws a power factor of 0.9 leading. Calculate the total real power, total reactive power, and verify the total apparent power.
💡 Hint: Use the power triangle to find the relationships.
Design a three-phase system for an industrial facility needing 120 kW at a power factor of 0.85. What are the required line currents if using a phase voltage of 230 V?
💡 Hint: Make sure to assess total power against the capacity of the phase.
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Reference links
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