Electrical Engineering

mono phase probably means that you're using a linear phase response filter or delay meaning that all your frequency components get the same delay. Think of a square wave in the frequency domain, and how delay of reactive systems are a function of frequency

The best way to deal with faulty electrical equipment is to have it repaired or replace it.

Dimmer stat is an auto transformer which is generally connected to supply which provide us step up /step down output depending on the terminal to which input is connected.

Normally there are two ways to operate a Dimmer stat:-

1.the output voltage can be varied from 0 to full supply voltage.

2. voltage from 0 to 12 % higher than supply voltage

This can be easily understood by connection diagram of a Dimmer stat-

2x6x12 load

P = IV

Where: P = power in watts, I = Current, and V= Voltage

Using ohms law: V = IR where V=Voltage, I = Current, and R= Resistance

First solve for I,

I = V/R, 12/30 = .4

Then use the power equation:

P = .4*12 = 4.8 Watts

Because its function is to measure the current, i.e. the amount of electrical flow in the circuit, and this require that the current flows through the ammeter A good ammeter has very low series resistance, so connecting it in series will not affect your circuit. Be careful when using an ammeter , because of its very low resistance , it can cause a short circuit if you use it by mistake to measure "voltage", so avoid connecting it in Parallel.

due to commutation the current in the coil reverses

P=ie

Yes, a diode inherently has polarity, as current is only allowed to flow one direction.

a: its function is to detect a change of light withing its perimeter

250 kVA generators come in different voltage settings and this information is needed before a wire size can be given

A sine wave centered at zero will have a positive peak that is the same magnitude as the negative peak. This can be offset so the negative peak magnitude does not match the positive peak magnitude. For example a 1volt peak - neutral sine wave could be DC offset by 1 volt so the positive peak is at 2 volts and the negative peak is at 0.

Step-Up Transformers increase the primary voltage to a higher voltage, of same frequency.

A: The essential difference is while it will behave like a normal diode at some at .6 forward voltage it has a negative impedance area before this point is reached it is not a very stable area to maintain and has the tendency to switch from one mode [low level] to the other .6v and very fast endeed.

For a current to flow between two points, those points must have a potential difference (voltage) across them.

A flow of electrical charges is the definition of an electric current. This is a far better definition than 'a flow of free electrons', which one normally hears, because a current can be a flow of free electrons, positive or negative ions, 'holes', etc. -depending on the medium through which the current is flowing.

An autotransformer is a transformer with at least two windings where a part of one winding (the common winding) is shared between both primary and secondary outputs.

You get ripple in a power supply that is converting AC to DC because in a full-wave bridge the waveform, unfiltered, looks like a sine wave where the negative part of the cycle is flipped to positive. The Capacitor stores charge so its use helps keep the voltage from dropping so quickly to zero. The decay of the charge on the capacitor depends on the resistive load. If you could hold the highest voltage long enough before the next cycle voltage increased you would have no ripple. Various capacitor circuits, with other components, are used to reduce ripple to an acceptable range for an application.

Amove-able object

power test

The relay is used to "interlock" a circuit. It consists of a coil and a number of auxiliary "normally open" or "normally closed" contacts. A limiting condition is wired through the coil contacts and resulting conditions are wired through the auxiliary contacts. When the limiting condition is met, the coil will pull in and change the state of the auxiliary contacts. For example, if you want a lamp (lamp 1) to turn off when a second lamp (lamp 2) is turned on, lamp 1 would be wired through a "normally closed" set of contacts and lamp 2 would be wired through the coil contacts. When lamp 2 is turned on, the coil will pull in and open the "normally closed" contact for lamp 1, turning it off.

RAN stands for Radio Access Network. A RAN Engineer generally works for a wireless carrier, such as T-Mobile, AT&T, Sprint, or Verizon. They deal with the air interface part of the network, so their responsibilities could involve finding tower locations and having cell sites built, designing the frequency plan, selecting antennas and downtilts, and finally optimizing the network. They are the ones that research and correct your dropped calls and try to eliminate No Service areas. They also monitor traffic and try to grow the network as needed to accommodate all the users. Remember that cell phones are just little radios that talk to big radios (cell sites); a good RAN engineer minimizes interference and creates the best experience for the customer. They work with Switch, Core, Translations, Network, Construction, and Field Engineers. RAN engineering is a very specific field; if you are interested, obtain an Electrical Engineering degree.