Electrical Engineering

5kw = 6.25 kva becoz kva = kw/ pf if we take pf is o.8

Most components are designed and built to work at very low voltage. ESD can be of a magnitude of 1000 times greater. So if this voltage can find its way into a circuit it can permanently damage the circuit or worst yet weaken it for a premature failure

A capacitor, in its simplest form, is two conductive plates separated by a dielectric.

The Wye (also know as Star - especially in the motor rewind industry) is a 4-wire system which provides two different supply voltages. The center-point of the Wye is the system neutral and is usually solidly grounded. Where it is desirable to limit the phase-to-ground fault magnitude the center-point of the Wye may be connected to ground through and neutral grounding resistor or a current limiting reactor. Because the system is tied to ground it is easy to provide system ground fault protection. Three-phase loads can be connected phase-to-phase and singlephase loads can be connected from any phase to the system neutral. On a wye system, the phase unbalance currentis carried by the system neutral. On a Wye system the line current is equal to the phase current i.e. ( ILine 1 = IPhase A) and the line-to-line voltage is equal to the vector sum of two individual phase voltages i.e. (E Line1-2 = E PhaseA + E PhaseB' ). In a Wye system the phase-to-phase voltage is 1.732 x the phase-to-ground voltage. Some typical Wye system voltages are: 120/208Y, 277/480Y, 2400/4160Y, 4160/7200Y, 7200/12470Y, 7620/13200Y,and 19920/34500Y

The short answer is that they don't.

But that doesn't help you much.

Electrons flow from the negative terminal to the positive terminal.

Why?

Negative and positive (opposite) charges attract each other, and like charges repel each other. So you can think of the positive charged end pulling electrons towards it, as well as the negative charged end pushing electrons away from it.

Water makes a good analogy, the battery is a pump, so there is high pressure on the outlet of the pump ( the negative terminal ) through the pipes and whatnot, ( the wire and whatnot) to the inlet of the pump ( the positive charged end ).

Answer is GAIN

sensing amplifiers and its circuit diagram

i think it is symbolised with a capital 'e' or 'v' :P hope this helped! :L:L

See the diagram linked below.

It depends on the frequency in the expression of the function. A third harmonic would mean that the frequency is 3 omega, thus the circuit will consist only of the quantities that have 3 omega in the expression. For example if you have :

e(t)=5sin(3ωt+π/4) and is(t)=7sin(ωt+π/4), in the first harmonic the e(t) quantity

will disappear from the circuit while in the third harmonic the is(t) quantity will be neglected.

The windings are wound as a pair, two wires next to each other. Same start point and same end point. In parallel, another words. They both share the same axis point also so the EMF is balanced as near to perfect as possible. The share the same EMF path when the electrons are changed into magnetism and then back to electrical current, hopping from the primary to secondary windings.

A phase current is the current passing through a phase, whereas a line current is the current flowing through a line.

Hi As far as I have been able to figure out the 1600 puts out a whopping 21 amps, the 1700 puts out you ready for this? 20 amps. Not much anyway, so if you are looking to add a bunch of lighting like halogen rode lights better look for a higher out put stator and heavy duty regulator - rectifier, They are out there but nailing the seller down to actual output is hard. Hope this helps.

Transformers are used to change the voltage in a circuit from high to low or from low to high. Some of the gadgets that use transformers include surround sound systems, the CPU power supply and speakers which have inbuilt amplifiers.

60 minutes, 30 minutes or 15 minutes Time of Day (TOD) : Up to eight, seasonal, time of day rate registers for energy and demand Power factory : Recording of average monthly power factor.

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end users requirements?

The 1Nxxxx numbering system is an American standard (now adopted globally) used to mark semiconductor devices. The "1N" means that it is a single junction semiconductor device (i.e. a diode). "4001" is a number given to the smallest diode in the 400x series (4001, 4002, and so on) - the number indicates the voltage, current and power ratings of the diode. A transistor (which has 2 junctions) would be numbered 2Nxxxx. 1-single junction semiconductor device N-Silicon device 400-its a particular series whose max allowed current is 1A. x- it denotes the voltage rating. 1-50V,2-100V,3-200V... 7-1000V.

Not possible. A Watt-hour is a quantity of work. A MegaWatt is rate at which work is done. These units are not convertible one to another without more data.

True, current causes the damage. But current cannot flow unless there is voltage present to push it. Imagine a live, exposed wire sticking out of a wall. It has voltage, but that's all. No current flows until the circuit is completed by something. That something can be you! At the instant you touch the wire, current flows from the wire, through you, and into the ground. If the current is high enough, it can injure or even kill you. The higher the voltage, the more current will flow once you touch the wire. A sign warning of high current would be inaccurate, because before you touch the wire, the current is zero. And low voltages cause very little current to flow through a human body under normal conditions. So, high voltage does indeed pose a potential threat, and thus warrants a warning. It's like the flammable warning on a can of gasoline. Right now, it just sits there. It is not hot, there is no flame. Yet. But we both would agree it has the potential to burn us to a crisp under the right conditions. Gasoline is not what hurts you. The flame it produces is what does the damage, yet we still put the warning on the gasoline. Voltage is like that. It's the current (flame) that does the damage, but it comes from the voltage (gasoline), so that's what we warn of.

The circuit works to put everything together. It can help to integrate all of the system so that you can have all of the things work together.

SWB - Steel Wire Braid

The balls on overhead conductors are, belive it or not to make them visable to birds, helecoptors and planes etc, so they wont fly in to them. They have no electrical purpose what so ever, Sorry to sat its that simple!! Colin