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1. ### what is the pf of transformer?

With no load, the power factor of a transformer is very low, but it not zero. The current always has a real component because of power losses in the transformer. The copper losses go down in proportion to current squared, but the iron losses are not...

2 Answers · Science & Mathematics · 16/06/2013

2. ### What is the maximum and minimum equivalent capacitance you can make using only three capacitors out of four?

3000 pF, 0.0089 µF, 12000 pF, and 0.024 µF or, ...

1 Answers · Science & Mathematics · 23/02/2012

Dont ruin the meter

3 Answers · Science & Mathematics · 20/11/2013

4. ### Maximum Charge of 10v on a 100-pf capacitor?

q=c/v so answer will be 10nc

2 Answers · Science & Mathematics · 23/04/2013

5. ### convert 0.001 uF to pF?

1000pF I build capacitor and resistor part numbers all day long!!

9 Answers · Science & Mathematics · 03/04/2007

6. ### Residential PF Caps -- are they for real?

The typical residential home in the US has a peak load power factor in the range of 0.90 to 0.95 lagging. The only way adding capacitors is going to save you on your electric bill is if your electric utility bills you in...

5 Answers · Science & Mathematics · 06/04/2008

7. ### (Electrical Circuits) What is the pf?

Cos of the phase angle in the impedance coil circuit = .74 Phase angle of impedance coil circuit = arc cos .74 = 42.27 degrees Inductive vars = (sin 42.27 degrees) x 269 VA = 180.93 var Watts of impedance coil = p.f. x VA = .74 x 269 = 199 Watts...

2 Answers · Science & Mathematics · 01/02/2010

8. ### a varactor diode has C0 equal to 320 pF?

Varactor characteristics aren't linear http://spraguegoodman.com/pdfs/950.pdf The only way to plot a curve would be to either do an actual Vr versus capacitance or simulate it on one of the many electronic simulation programs. Assuming you meant 200μ...

2 Answers · Science & Mathematics · 23/02/2012

9. ### A 2400 pF air-gap capacitor is connected to a 8.0 V battery. ?

Initial charge is Q = CV = 19.2 nC Mica has a dielectric constant of about 7 (varies a lot, depending on type and source) so the capacitance changes to 2.4 nF x 7 = 16.8 nF new charge is 16.8 nF x 8 = 134...

2 Answers · Science & Mathematics · 05/12/2008

10. ### A 6.0-pF capacitor is needed to construct a circuit.?

The first answer is correct. If you really need other answers, you can combine 9 caps in parallel and then put 6 sets of them in series. Or 18 caps and 12 sets. There are an infinite number of...

2 Answers · Science & Mathematics · 20/11/2013