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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the main purpose of the open-circuit test?
💡 Hint: Think about how transformers function without a load.
Question 2
Easy
List two components of no-load current during the test.
💡 Hint: Consider the current's phase relationship with voltage.
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 small current drawn during the open-circuit test called?
- Load Current
- No-Load Current
- Rated Current
💡 Hint: Focus on the test’s operational conditions to answer.
Question 2
True or False: Core losses are variable losses that depend on the load.
- True
- False
💡 Hint: Consider the nature of core losses separated from load-dependent factors.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A 2 kVA transformer shows a wattmeter reading of 40 W during an open-circuit test with a 115 V voltage applied. If the no-load current measured is 0.35 A, calculate the core loss resistance.
💡 Hint: Use the relationship between core loss current and the voltage to find resistance.
Question 2
Transformers exhibit various degrees of core loss. If another transformer shows varying readings during tests, how would you determine the quality of the magnetic core material?
💡 Hint: Think about how core material selection impacts performance measurements over typically tested parameters.
Challenge and get performance evaluation