Electrical Engineering

power factor=real power/apparent power...

real power in the sense the capacity of the circuit for performing a work in a particular time..for example the work done by a motor circuit is so and so...real power is what we consume from them...

apparent power if the product of the current thro' the circuit and the voltage...it will be always greater than the real power..

if the POWER FACTOR IS 1.0(100%),THEN THE AC POWER IN THE CIRCUIT WILL BE EQUIVALENT TO THE POWER OFFERED BY A DC CIRCUIT....

A 23 watt cfl will give off roughly 1600 lumens. However that is only within a few inches of the bulb.

It depends on the current requirement. Specify an application or describe what is being powered by the 12 V to get an answer.

The question isn't correct, you have to define the voltage level not the power rating.

twice the full-load current. code 430.83(c)

If i understand you correctly, yes there certainly can be. If you replace, say a 10 amp breaker with a 20 amp. you are losing the safety factor - the whole purpose of the breaker to begin with. Always replace a breaker with the exact same amperage rating!

A coil nailer is a tool typically used in woodworking or roofing. It is often used when framing, and is generally considered easier and more practical than stick nailers.

The type of bearing that would be fitted to a fractional kW electric motor will depend on the model and maker of the motor. Deep grove ball bearings are the most common bearings used.

high voltage side call primary

In theory, yes, but the logistics may make it prohibitively difficult. Each generator will produce AC in its own phase and slightly different frequencies. Since joining the wires in parallel will effectively add the three amperages and preserve the highest voltage, you will get constructive and destructive interference every time the phase or frequency is not perfectly aligned. Generators tend to not hold a particularly tight tolerance in terms of frequency and phase, so within a second or two, it's just about guaranteed that at least one generator will already be out of phase with the others and cause interference (assuming you were able to line up the waves at the start). There are four possible solutions:

1. Build two phase-shift detectors/modifiers using variable capacitors/inductors that detect and react to the changing phases to ensure the phases line up with each other

2. Convert the AC to DC using a high-power rectifier bridge, add the DC sources together, then re-alternate the result using an inverter capable of alternating 3,000 watts

3. Physically connect the input shafts (the part that spins) from the three generator coils to ensure the phase/frequency is constant across all three

4. (probably the best) invest in a 3,000-watt generator

HONDA make a system for some of its smaller generators (not all of them) where there is a plug-in control cable between the two generators. This cable lines up the two generators as described above.

The transformer ducts are usually made up of strips of transformer board that is glued to the Diamond patter resin coated paper. It is widely used by transformers for manufacturing oil immersed distribution transformer windings.

connect the base of the transistor to a variable resistor and to a normal resistor

The air is returning at a lower velocity, so you need a larger size duct.

Speed of movement of coil and the number of turns in the coil

Ceramic

.04 cents per 1000 watts. customer used 1076000 watts. 1076000/1000 x .04 = 43.03. 1076 x .04 = $43.03

i had the same problem, sounded like the flasher was clicking. turns out it was the multi-function switch (turn signal/cruise ctrl/highbeam/washer switch). it was about 300 bucks to have replaced. couldn't do it myself.

Junction capacitance is used to take the ripple out of DC circuits primarily.

The other is used in voltage doublers or step ups as a storage.

It depends on the 3 phase inverter. If it is a 3 phase input then you will first need to get a single phase to 3 phase converter to simulate a 3 phase supply, if that is what this particular inverter is intended for then you will have a label saying 230v primary with a L & N connection point, and the output will be labelled as secondary, giving you the inverted power rating.

This is a very expensive way of running machinery as the inverted power is no different in conumption to the single phase.

Reactive power is power that flows back and forth between the inductive windings of the motor in the fan. If an appliance doesn't have a motor then the power it uses could be classified as Active in that it provides a load to the power company generator.

Long time, short time, instentaneous, earth fault = lsig

the speed decrease if increasing load..in star connection the speed lower

30 mAmp rating devices are commercially available.

Power factor capacitors can be installed on a three phase motor between the motor contactor and the overload heater block.

This is why electricians will always have work. Go to discuss question page.