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In the balanced three phase circuit shown in figure, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter us connected across lines b and c. The phase sequence is positive and the load power factor is 0.8 lag. The wattmeter reading will be
  • a)
    800 W
  • b)
    600 W
  • c)
    1385.6 W
  • d)
    1039.23 W
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
In the balanced three phase circuit shown in figure, the current coil ...
Current through current coil = Ia
Voltage across the pressure coil = Vbc

Wattmeter reading = Vbc Ia cos(90 - ϕ)
= Vbc Ia sin ϕ
= (200) (5) (0.6) = 600 W
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In the balanced three phase circuit shown in figure, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter us connected across lines b and c. The phase sequence is positive and the load power factor is 0.8 lag. The wattmeter reading will bea)800 Wb)600 Wc)1385.6 Wd)1039.23 WCorrect answer is option 'B'. Can you explain this answer?
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In the balanced three phase circuit shown in figure, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter us connected across lines b and c. The phase sequence is positive and the load power factor is 0.8 lag. The wattmeter reading will bea)800 Wb)600 Wc)1385.6 Wd)1039.23 WCorrect answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about In the balanced three phase circuit shown in figure, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter us connected across lines b and c. The phase sequence is positive and the load power factor is 0.8 lag. The wattmeter reading will bea)800 Wb)600 Wc)1385.6 Wd)1039.23 WCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In the balanced three phase circuit shown in figure, the current coil of the wattmeter is connected in line aA, and the potential coil of the wattmeter us connected across lines b and c. The phase sequence is positive and the load power factor is 0.8 lag. The wattmeter reading will bea)800 Wb)600 Wc)1385.6 Wd)1039.23 WCorrect answer is option 'B'. Can you explain this answer?.
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