when we have to use UPF wattmeter and LPF wattmeter? what is the difference bet

when we have to use UPF wattmeter and LPF wattmeter?
what is the difference between UPF and LPF wattmeter in
terms of construction?

Question Posted / arunraj

No Answer is Posted For this Question
Be the First to Post Answer

More Electrical Engineering Interview Questions

they transformer oil leakeage to beather tank and top parts . they protection relayes was not operated.what is the oil leakeage problem.

how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable xample?

Why the capacitor bank is keeping on for electricity supply and keeping it off for generator supply

what is power factor

What is the difference between earth resistance and earth electrode resistance?

what a function diesel generetaor turbo charger & turbo charger is more heated explain reason ?

What is the drawback of class b amplifier? How is this minimized?

LET ME NOW MORE ABOUT icu and ics for circuit breaker. how we calculate the rating of circuit breaker and i c u and ics values

what is servo motor and how it works?

3 measuring instrument for transformers?

can alternators work at leading power factor?

what do you mean by plant earthing system.

For more Electrical Engineering Interview Questions Click Here