Practice - Efficiency (η): Measuring Energy Conversion Effectiveness
Practice Questions
Test your understanding with targeted questions
Define transformer efficiency.
💡 Hint: Think about how well the transformer converts energy.
What do we refer to as copper losses?
💡 Hint: Consider the effect of load on energy dissipation.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the efficiency of a transformer?
💡 Hint: Think about what defines effective energy conversion.
True or False: Core losses increase with the load on a transformer.
💡 Hint: Remember the definition of core losses.
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Challenge Problems
Push your limits with advanced challenges
A transformer has core losses of 250 W and full-load copper losses of 650 W. If it operates at a load of 60% with a power factor of 0.9, calculate its efficiency.
💡 Hint: Remember to efficiently handle units and calculations.
For a given transformer, if maximum efficiency occurs at a load of 0.75 of its rated capacity, with copper losses of 300 W, derive the value of core losses it is operating against.
💡 Hint: This relates to understanding proportional losses against rated conditions.
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