Electrical Engineering

No, that is a paralel circuit. a series circuit has two paths

Everything we see is made up of tiny little parts called atoms. The atoms are made of even smaller parts. These are called protons, electrons and neutrons. They are very different from each other in many ways. One way they are different is their "charge." Protons have a positive (+) charge. Electrons have a negative (-) charge. Neutrons have no charge.

Ramp voltage is a voltage that can be steadily increasing or decreasing.

an oscillating RC circuit

Instantaneous power doesn't have a frequency; it's instantaneous!

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Polar molecules have partial negative and partial positive charges on opposing sides. They have a net dipole as a result of the opposing charges.

RADITOR * Small generators either air cooled or water cooled 2 stroke. Autos are mainly 4 stroke and the majority watercooled.

because it can magnetize and demagnetize easily

For an inductive load, the current lags the voltage by 90 degs. Hence the power factor for an inductive load is 0. For a capacitive load, the current leads the voltage by 90 degs. Hence the power factor for a capacitive load is 0. For a resistive load, the current and the voltage are in phase. Hence the power factor for a resistive load is 1.

In Europe and other places the standard single-phase supply for houses and small businesses is 230 v which is derived from a 400 v 3-phase 4-wire supply by connecting each customer's circuit between one phase line and the neutral wire.

Radar can be used to detect distance to an object by determining round trip echo time. Some uses below:

Level monitoring of substances in a container or silo-the radar antenna transmits downward from the top of the container and determines the distance to the top of the substance, allowing the operator to determine the amount of substance in the tank.

Radar can be used by vehicle collision avoidance systems.

Basically, any time distance to an object is required, radar is an excellent solution.

Power factor is the ratio of apparent versus true power. It depends on the phase angle between voltage and current, and is the cosine of that phase angle.

This occurs because a motor is an inductive (reactive) load, constituting a stored energy device. In an inductor, current lags voltage. In a capacitor, current leads voltage.

Filter the output with a low-pass filter whose cut-off frequency is less than 120 Hz.

That process removes the energy at harmonic frequencies from the output waveform,

leaving only the energy at 60 Hz.

Because of fire

There is no object that is simply called "delta". On the other hand, there are several that have delta as part of their name, usually followed by the constellation, e.g. delta orionis, delta canis maioris, etc.

For a device the requires 2 amperes to run, a current of 1 ampere will not be enough. Such a current cannot be able to power all the components of the device to make them function properly.

It depends on the equipment. The power supplies on most devices can only handle a specific voltage and still work properly. Some, for instance some cell-phone chargers, can handle a range of voltages, say from 110 to 240, which lets them operate in both the States and the UK (where the standard home/office voltage is 230 Volts). Check the label on the back of the device; it will usually show the operating voltage required. Asking the maximum voltage for 110 equipment is valid. 110 means AC voltage that averages 110 volts as it swings above and below 0 volts. The label on a device typically will not tell you the maximum voltage it can withstand if it is plugged into a U.S. 110 volts AC outlet.

U.S. houses are wired with 2 hot wires (each 120 Volts AC but opposite of each other) and a neutral wire (0 volts). That way electrical outlets can be wired for 120 Volts AC if they use a hot wire and the neutral wire... or 240 volts AC if they use both of the hot wires.

If the neutral line goes bad then the 120 volts AC outlet floats anywhere from 0 volts to 240 volts. I have been in a house when this occurred (the neutral corroded on the transformer that fed several houses). Supplying too high a voltage burned out an air conditioner, a refrigerator, and an incandescent bulb actually burst, scattering glass close to my wife. The air conditioner threw out a lot of smoke so there was a danger of fire.

In the U.S. a typical 120 volts AC circuit often has a higher voltage. I have seen specifications and codes that put an upper allowable voltage at 120 volts AC, 137.5 volts AC, and 150 volts AC. Every electrical device has different limits but I would not subject anything built for 120 volts AC to voltages higher than 132 Volts AC unless I had specific knowledge that the device could handle the higher voltage.

Phases in AC refer to the number of sine waves of alternating current used to generate the average voltage. In 2 phase, two opposing sine waves are overlapped to give the average voltage delivered, eg 240V in household supplies.

In 3 phase, three sine waves are overlapped to produce a more consistent average voltage.

If a DC supply is connected to the incomer of a transformer, you effectively have a short circuit, because the DC impedance of a transformer (actually, any inductor) is quite low. You will blow something.

A transformer winding only produces a magnetic field when current flows through it. Switch the current off, and the magnetic field disappears. You do not need to 'demagnetise' a transformer winding.

Quite simply, so you don't put too much current on the wires than they can handle. They also provide protection from 'ground faults', which is when the 'hot' and neutral wires touch. This causes a spike of current (because the resistance drops to near zero) and the breaker senses that too, or it should when it functions properly.

To allow room for oil expansion and contraction. The transformer is completely filled with the oil and when it heats up under load or due to ambient temperatures, the oil has to have a place to go. In the event of colder weather or if the transformer is not under heavy load the oil cools and contracts creating a slight vacuum inside the tank. The conservator acts as a reservoir of oil that can then flow back into the tank so that no air enters it.