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Consider the following statements regarding power measurement of three-phase circuits by the two-wattmeter method
1. Total power can be measured if the three-phase load is balanced and can be represented by an equivalent Y connection only
2. Total power can be measured for the three-phase load irrespective of, whether the load is balanced or not and connected in Y or Δ
3. Power factor can be calculated only if the three-phase load is balanced
Which of the above statements are correct?
  • a)
    1 and 2 only
  • b)
    1 and 3 only
  • c)
    2 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
Consider the following statements regarding power measurement of three...
Two wattmeter method:
The connection diagram using wattmeters as shown below.
From the phasor diagram
⇒ Total three-phase power
  • Total three-phase power is the sum of two wattmeters.​
  • In the two wattmeter method, the power factor can be calculated only when the load is balanced.
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Consider the following statements regarding power measurement of three-phase circuits by the two-wattmeter method1. Total power can be measured if the three-phase load is balanced and can be represented by an equivalent Y connection only2. Total power can be measured for the three-phase load irrespective of, whether the load is balanced or not and connected in Y or Δ3. Power factor can be calculated only if the three-phase load is balancedWhich of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?
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Consider the following statements regarding power measurement of three-phase circuits by the two-wattmeter method1. Total power can be measured if the three-phase load is balanced and can be represented by an equivalent Y connection only2. Total power can be measured for the three-phase load irrespective of, whether the load is balanced or not and connected in Y or Δ3. Power factor can be calculated only if the three-phase load is balancedWhich of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about Consider the following statements regarding power measurement of three-phase circuits by the two-wattmeter method1. Total power can be measured if the three-phase load is balanced and can be represented by an equivalent Y connection only2. Total power can be measured for the three-phase load irrespective of, whether the load is balanced or not and connected in Y or Δ3. Power factor can be calculated only if the three-phase load is balancedWhich of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following statements regarding power measurement of three-phase circuits by the two-wattmeter method1. Total power can be measured if the three-phase load is balanced and can be represented by an equivalent Y connection only2. Total power can be measured for the three-phase load irrespective of, whether the load is balanced or not and connected in Y or Δ3. Power factor can be calculated only if the three-phase load is balancedWhich of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer?.
Solutions for Consider the following statements regarding power measurement of three-phase circuits by the two-wattmeter method1. Total power can be measured if the three-phase load is balanced and can be represented by an equivalent Y connection only2. Total power can be measured for the three-phase load irrespective of, whether the load is balanced or not and connected in Y or Δ3. Power factor can be calculated only if the three-phase load is balancedWhich of the above statements are correct?a)1 and 2 onlyb)1 and 3 onlyc)2 and 3 onlyd)1, 2 and 3Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
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