Why is it preferred to use a wattmeter(s) to measure power
in three phase systems rather than using a combination of
other instruments e.g. voltmeters, ammeters etc?

Answers were Sorted based on User's Feedback



Why is it preferred to use a wattmeter(s) to measure power in three phase systems rather than usin..

Answer / vithal k

by formula one can derive the power through Voltmeter &
Ammeter reading but its impossible to project the power
factor at the time of reading we r taking for both the meter.

Is This Answer Correct ?    8 Yes 1 No

Why is it preferred to use a wattmeter(s) to measure power in three phase systems rather than usin..

Answer / ravikumar.g

The wattmeter is using for find out the power in 3 phase
and single phase in differnet formulas.

In the voltmeter and ammeter reading can also find out the
power to caluculate the formulas.

Is This Answer Correct ?    0 Yes 6 No

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