Question 1073 of 844 · Washington 01 Journey Level Electrician Exam
Which instrument directly measures true power in watts?
Exactly one answer is correct.
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Correct answer to question 1073
- D: A wattmeter
Explanation
A wattmeter senses both voltage and current and their phase relationship, so it reads true power. A voltmeter and ammeter together give only apparent power.
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