Electrical Engineering

when the DC current flows through the capacitor .the leakage of the charges is in capacitor called Dc leakage capacitor .

It is impossible

The best way to answer this question might be to consider the consequences if the input impedance was low: with a low input impedance, (signifficant) current would start flowing, and the amplifier would draw energy from the signal sources. None of the typical signal sources is designed to deliver energy on its outputs (after all, this is where the amplifier itself comes in). It is certainly possible to think that some of these sources might be changed to deliver some energy, but this is not the case with present-time tuners, CD players, microphones, and so forth. Assuming that the energy supply was not the issue, just to ponder this theoretical scenario a little further, the fact that current would flow from the source to the amplifier would also make the signal more vulnerable to the characteristics of the cable that connects the two. The high impedance of an amplifier input draws no energy, thereby avoiding these issues. It is the amplifier's task to convert a very low energy, voltage-driven signal into an higher energy output signal (driving the speakers which themselves have a very low impedance). ---- The way I typically think about this is to consider connecting a load to a Thevenin equivalent circuit [1]. The voltage across the load is given by the voltage divider formula (Vload = Vsrc * Rload/(Rload+Rthevenin)). If there is a very low load impedance--this means the amplifier has a very low input impedance--most of the source voltage will drop over the Thevenin equivalent resistance. With a very high input impedance, however, the majority of the signal voltage will be transferred from the source to the load because in the above equation, if Rload >> Rthevenin, Vload is approximately equal to Vsrc. if an amplifier has low impedance input the f/b must be low impedance also which make it in practical to use. The hi impedance of a typical amplifier is because the input is one two diodes basically operating on it exponential curve. Making it virtual the same as the other diode. for a differential amplifier. Boltzmann constant will define the impedance of a single diode.

1 hp = 746 watts

2.5 x 746 = 1825 watts or 1.825Kw

The Generator is large enough.

It depends on the transistor. Minimum base-emitter junction voltage can be as low as 0.6 volts for a silicon transistor, and as low as 0.2 volts for a germanium transistor.

Creeping means in case of no load meter not generate any pulse or record no enengy in case of load is zero

I am assuming that you really want to use ammeters to measure power in a balanced 3 phase system. (hope you are not meaning 3 watt meter method)

Power in Watt in a three phase system is equal to 1.73 x line voltage x line current x power factor. You need to know line voltage, power factor also in addition to current to compute the power. If the system is balanced then actually you do not need to connect ammeters in all three lines. One ammeter reading will do.

Transients -- they can be currents or voltages -- occur momentarily and fleetingly in response to a stimulus or change in the equilibrium of a circuit. Transients frequently occur when power is applied to or removed from a circuit, because of expanding or collapsing magnetic fields in inductors or the charging or discharging of capacitors.

A 25mm sq electrical cable is equal to a #4 AWG conductor.

A #4 copper conductor with an insulation factor of 75 and 90 degrees C is rated at 85 and 95 amps respectively.

When resistors are connected in series in a circuit . the voltage drop across each resistor will be equal to its resistance, as V=IR, V is direct proportional to R.

An

A: The relationship is that the current will divide for each paths in a parallel circuit and the voltage drop across each will be the source voltage.

In a series circuit the current will remain the same for each component but the voltage will divide to reflect each different component value. And the sum of all of the voltage drops will add to the voltage source

There are many variables to that answer, the biggest being where you live. The cost of the material for a 200 amp, 42 circuit panel, the wire and breakers should not be over five hundred dollars. Labor however cannot be calculated with this information.

The amount of voltage of an electrical generator will determine the limit of the output of energy. If the voltage is too high, it can burst the pipes causing it to shut down.

In a pure (ideal) capacitive circuit, current leads voltage by 90 degrees.

digital converter extracts samples of analog signal from input siganl

digital converter quantizes analog sample and assignes a binary numbervalue to it

digital coanverter encodes a quantized analog signal to transmit it across a digital network

If one light goes out on a series-parallel connected string, all of the lights in that particular series string will go out. The other parallel strings will not be affected. If you are asking about Christmas tree lights, please note that most modern low voltage bulb designs make the bulb short out, rather than open, when the filament burns out. This keeps the other bulbs in that series string on, although they now have more power and are more likely to also burn out.

High Tension transformer means (HT) high voltage transformer.

Interphase transformers are utilized as a part of frameworks that have two rectifier frameworks being utilized as a part of parallel. The requirement for the Interphase Transformer is available in light of the fact that when associating rectifiers in parallel, their immediate voltages vary.

A device to test if wires are electrically connected. Typically a small lightbulb and a battery are used.

It's a generator that creates 400hz AC signals, instead of 50 or 60hz. 400hz is often used on ships, because the equipment (generators, transformers) can be made much smaller.

importance of statistics in electrical engineering

Capacitors are measured in Farads or microfarads.

solar system is a group of planets.....

sun-mertcury,venus,earth,mars,saturn,neptune uranus,pluto,jupitor.......

diagram can be got through internet

Reversing the polarity on a capacitor will damge it if it is polarized, such as most electrolytic capacitors. You can only safely reverse polarity on non-polarized capacitors. Since electrolytic technology is used to increase the capacitance without unduly incresing the size, most very small capacitors, such as ceramic disk capacitors, are non-polarized.