when we have to use UPF wattmeter and LPF wattmeter?
what is the difference between UPF and LPF wattmeter in
terms of construction?
Answer Posted / shoeb
my dear friend . UPF stands for unity power factor and LPF means low power factor . we have UPF or near UPF when we are dealing with capacitance and WE have LPF when we are dealing with inductance because in the case of capacitans powerfactor lead and in the case of inductance powerfactor will lag ..... this is the difference b/w UPF & LPF
| Is This Answer Correct ? | 9 Yes | 31 No |
Post New Answer View All Answers
Convert a star connected network into a delta connected network.
What is meaning of out of phase (making & breaking) capacity And how to calculate
What is size 00, 01, 1 etc., in HRC fuse types?
If a high resistance fault occurs,then what are the changes will happen in the system?
What are the parameters of water ( Water quality )to be monitored in Centralised HVAC ( water cooler chillers )
Apparent power is expressed as V * I(Conjugate). Why not in V * I ?
Why did lightening arrestor solid copper rod head is sharp on mobile tower top?
what happen when increase or decrease size of lamp,light.glass.
in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.
what is the use of piston rings in the engine used for a generator...........
what is the difference between vector scale and vector diagram?
why dc is used in control circuits for MV & LV switchgeras instead of ac
What is the formula of frequency ?
XYZ
state the working principle of incondenscent tube?