LPF wattmeter is used for measuring power in highly inductive circuits & UPF wattmeter is used for measure power in resistance circuit in which the power factor ranges from 0.5 to unity.
Answer is given by :Er. M KUMAR YADAV
UPF(Unity Power Factor) is connected as the power factor is 1. Unlike OC where quantum dynamic rules apply in SC the time space gravitational lensing takes place which is why only LPF can be used.
If, by 'upf', you mean 'unity power factor', then allwattmeters measure the in-phase component of the load current, so the term is quiet unnecessary.A short-circuit test is used to determine the (true) power loss in the transformer, which is exactly what a wattmeter measures
Unity power factor has a value of 1.0. This means the current and voltage waveforms are in phase. This is only possible if the net load is non-reactive (resistive). If the load is either capacitively or inductively reactive, the power factor will be other than unity. If an inductively reactive load such as a motor is offset by a capacitively reactive load such as a PF correction capacitor, it is possible to acheive a net load that has unity power factor. Some loads, such as resistance heaters, are intrinsically non-reactive, and present a unity power factor.
A leading power factor means that the current is leading the voltage. That means that in the AC cycle (50 or 60 Hz) the current reaches its peak before the voltage. The amount of phase-lead can be up to 90 degrees which means one quarter cycle, or 5 milliseconds in a 50 Hz system.
Little poo face and Ugly poo face.
UPF(Unity Power Factor) is connected as the power factor is 1. Unlike OC where quantum dynamic rules apply in SC the time space gravitational lensing takes place which is why only LPF can be used.
Unity Power Factor.
UPF
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UPF stands for Ultraviolet Protection Factor. It is similar to the SPF number on sunscreens, but it is used for clothing. 15-24 is Good, and 50+ is 'Ultimate'.
Upf-32276-2-0
If, by 'upf', you mean 'unity power factor', then allwattmeters measure the in-phase component of the load current, so the term is quiet unnecessary.A short-circuit test is used to determine the (true) power loss in the transformer, which is exactly what a wattmeter measures
It is just product of voltage and current at unity powerfactor(UPF) or power at UPF. 1kva is one kilovolt amp or 1000 volts at 1000 amps.
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern UPF-I--. That is, seven letter words with 1st letter U and 2nd letter P and 3rd letter F and 5th letter I. In alphabetical order, they are: upfling
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern UPF-I---. That is, eight letter words with 1st letter U and 2nd letter P and 3rd letter F and 5th letter I. In alphabetical order, they are: upflings
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern UPF----S. That is, eight letter words with 1st letter U and 2nd letter P and 3rd letter F and 8th letter S. In alphabetical order, they are: upflings