Electrical Engineering (EE) Exam  >  Electrical Engineering (EE) Questions  >  The power in a 3 phase circuit is measured wi... Start Learning for Free
The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit is
  • a)
    Unity
  • b)
    2 (lagging)
  • c)
    0.5 (lagging)
  • d)
    Less than 0.5 (lagging)
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
The power in a 3 phase circuit is measured with the help of 2 watt met...
We know that, power factor is given by
Given that,
W1 = +ve value
W2 = -ve value
Here power factor angle varies from 60 degrees to 90 degrees.
Hence power factor varies from zero to 0.5 lagging
View all questions of this test
Most Upvoted Answer
The power in a 3 phase circuit is measured with the help of 2 watt met...
Explanation:
When measuring power in a 3 phase circuit, two watt meters are required to measure the power. The watt meters are connected in the circuit as shown below.

The power factor of the circuit can be determined based on the readings of the two watt meters. If the reading of one watt meter is positive and the reading of the other watt meter is negative, then the power factor of the circuit is lagging. The magnitude of the readings of the two watt meters will be different.

In this scenario, the power factor of the circuit is less than 0.5 (lagging). This is because the reading of one watt meter is positive and the reading of the other watt meter is negative, indicating a phase angle between the voltage and current. The magnitude of the readings of the two watt meters is different, which further confirms that the power factor is less than 0.5.

Therefore, the correct answer is option D, less than 0.5 (lagging).
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer?
Question Description
The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. 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 The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. 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 The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer?.
Solutions for The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE). Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer?, a detailed solution for The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The power in a 3 phase circuit is measured with the help of 2 watt meters. The reading of one of watt meters is positive and that of the others is negative. The magnitude of readings is different. It can be concluded that the power factor of the circuit isa)Unityb)2 (lagging)c)0.5 (lagging)d)Less than 0.5 (lagging)Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
Explore Courses for Electrical Engineering (EE) exam

Top Courses for Electrical Engineering (EE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev