When p.f. = 0.5, 0 = 60° and one of the wattmeters reads zero.
In 3 phase power measurement by two wattmeter method, the reading of one wattmeter is zero. The power factor of load is
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Question context
This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.