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the old ones with Transformers you can correct with capacitors
incandescent lamps have unity power factor
the newer florescent ballasts are closer to unity but tend more towards capacitance
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∙ 11y ago
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How is the power factor of an Electrodynamometer type wattmeter improved?
Power Factor of an electrodynamometer can be improved by connecting a large resistor in series with the current coil.
What is the approximative power factor of an incandescent lamp?
Incandescent lamps are nearly pure resistive loads with a power factor of 1
Why capacitor is used in tube light circuit?
For power factor improvement so that the KVA demand is reduced.
What is the function of a capacitor in a fluorescent light fitting?
A capacitor is used to improve the power factor of the lamp.More detailsTo prevent the lamp from taking too much current a fluorescent lamp has to have a choke, which has magnetic inductance. The inductance has a negative impact on the power factor of the (the ratio between apparent power and real power taken by the lamp) - i.e. the power factor is reduced - so a capacitor is used to compensate for the inductance by improving the power factor so that it is closer to the ideal value of 1.Basically the inductor with the capacitor smooths out the voltage or current.
What is a lamps open circuit?
It is the thing that lights up when power is switched on.
How you can calculate the ampere for fluorescent lamp with use VA?
I asked about the calculation for fluorescent lamps amperes using volt ampere, that means what is the power factor used ( according to international standard) for fluorescent lamps ?
LED power consumption vs Fluorescent lamp?
LED's consume much less power than fluorescent lamps. And last much longer.
How do Compact fluorescent bulbs work?
We need to improve CFL lamps in High Efficeicny 75% - 80% and Power factor 0.68 - 0.75. Effiecncy is measured by Lumen output divided by rated wattaged, how will be effected the above condition to life time of lamps?
Between fluorescent and incandescent which saves electricity?
Fluorescent lamps deliver more visible light than incandescent lamps using electric power at the same rate. (But incandescent lamps deliver more heat. Just depends on what purpose you're using light bulbs for.)
What is an automatic power factor control panel?
somewhere near where power comes into a building there is a phase angle or power factor meter automatic control will add capacitor banks until the phase angle is 0 when fluorescent lamps used transformer ballasts there could be lagging power factor lightly loaded motors do this too the power company charges you more if you have a load that is not near unity
How is the power factor of an Electrodynamometer type wattmeter improved?
Power Factor of an electrodynamometer can be improved by connecting a large resistor in series with the current coil.
What is the function of the capacitor in the fluorescent lamp?
A capacitor is placed across the supply of a fluorescent lamp circuit to correct the power factor
What is the approximative power factor of an incandescent lamp?
Incandescent lamps are nearly pure resistive loads with a power factor of 1
Why doesn't the amps x volts on a compact fluorescent bulb equal watts?
In a.c. circuits, the product of voltage and current is called 'apparent power', and is expressed in volt amperes. If you want to know the 'true power' of a load, you must multiply its apparent power by the power factor of the load. This is the cosine of the angle by which the load current is (in this case) lagging the supply voltage. Fluorescent lamps have a relatively-low power factor, so the numerical value of the lamp's true power (in watts) will always be somewhat lower than its apparent power (in volt amperes).
What is the function of capacitor across the supply to the fluorescent lamp when it is used?
A capacitor is placed across the supply of a fluorescent lamp circuit to correct the power factor
How are compact fluorescent lamps made?
Is was made by the smith familly in mafikeng ross . Rouna , roschenda and camden we used power 2 light up and matchezz
What parameters you consider when you calculate the current consumption of a 40 watt fluorescent bulb?
voltage, current and power factor
