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What is meant by calibration of wattmeter by phantom loading?

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Is there any difference in values between the two wattmeter method and three wattmeter method if you apply these two methods in same load?

Blondel's Theorem states that you can have one less wattmeter than there are conductors supplying a balanced or unbalanced load. In either case, the sum of the wattmeter readi (MORE)

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How you measure power factor in three phase load by two wattmeter method?

First of all, you can only measure power factor of a three-phase load, provided that it is balanced load. The power factor can then be found by determining the cosine of the p (MORE)

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How do you calibrate single phase energy meter by phantom loading?

  The phantom loading is that no external load is connected in actual sense and the current and pressure coils are connected seperatly so that it will consume only less po (MORE)

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What is meant by phantom loading?

  The phantom loading is that no external load is connected in actual sense and the current and pressure coils are connected seperatly so that it will consume only less po (MORE)

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Why is LPF wattmeter used for no load test?

In case of no load only magnetizing current is flowing which is somewhere around 75 degree out of phase and so the power factor is very low.
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What is meant by resistive load and reactive load?

A resistive load exhibits a pure resistance all the way down to DC. A reactive load (an inductor) presents negligible resistance at DC but 'appears' as a resistance (reactance (MORE)

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What is phantom loading?

Phantom loading is the power supply being used in your home that  you do not think about or realize. This power consumption is the  result of items in the home that are kept (MORE)

Understanding the Different Types of Pipettes

In many laboratories where principles of chemistry, biochemistry, and molecular biology are applied, the laboratory technician or scientist will frequently use pipettes. Pipet (MORE)
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