Electronics Engineering

When light falls on the junction of a pn junction/diode the potential barrier gets break down due to majorty of electrons flow and they release energy in the form of light.

Germanium cannot be used in any integrated circuit as its oxide is crumbly and water soluble (unlike silicon's oxide which is hard and stable). The only germanium integrated circuits ever made were very low density and the interconnects between components on the chip had to be done by hand under a microscope.

There has been work done on integrated circuits using a silicon germanium alloy wafer, but this has not produced any production chips yet that I am aware of. If this can be made to work, I see no reason why this material could not be used in VLSI designs and even higher density designs.

The main role of electrical engineers in construction projects is to supervise the electricians in handling all the electrical works considering the safety and quality requirements. The electrical engineer in the construction site also reads and studies the electrical plans (usually done by electrical design engineers) and implement it in the site and sometimes do necessary actions whether to correct or to improve the design. They coordinate with other electrical engineers in the implementation of the electrical system design and also with other engineers of different fields, such as civil and mechanical engineers, to make the construction job easier.

A ballpoint pen is just a pen with a cap. A regular pen is one that clicks. They both work the same though.

Facts missing. Need two of three values. The resistors value. The voltage across it. The current flowing through it. P=I^2*R. P=E^2/R

A capacitor charge as a time constant of R resistance C capacitance in ufd and it is defined as 63% for one time constant for the constant voltage source. Electronic engineers assume that a capacitor is fully charged by a 5 times constant. however mathematically speaking it will never be fully charged for obvious reasons. Therefore the answer is current will never stop/

False.

The characteristic impedance or surge impedance belongs to a uniform transmission line, usually written Z0. It is the ratio of the amplitudes of a single pair of voltage and current waves propagating along the line in the absence of reflections.

Diodes get damaged when their reverse voltage or forward current ratings are exceeded. It is also possible that a high speed transient could exceed the forward voltage rating before the diode turns on, but this is not normally the case.

In a car, primarily in the alternator, diodes get damaged by excessive current draw, or by connecting batteries backwards when jump starting. One way to get excessive draw is to attempt to rev the source engine while cranking the target engine - that is not a good idea - you should only rev the source engine when you are trying to add some charge to the target battery - you should let the source engine idle when cranking the target engine.

coil and oil

analog video is generally a type of video form in which we have numerous waves in terms of crests and troughs in a continuous manner upside-down on X axis whereas, in digital video we have many bars that are upawrds and then downwards on X axis in a continuous manner that also includes two types of binary bits, either 0 or 1.

The human voice is an analogue signal because the frequency of the sound varies in the sound waves as well as their amplitude that gives the power. Analog signal is defined as a signal that has a continuously varying amplitude or frequency. Human speech, and everything else a human hear, is in analog form.

The difference between the avalanche diode (which has a reverse breakdown above about 6.2 V) and the Zener is that the channel length of the former exceeds the "mean free path" of the electrons, so there are collisions between them on the way out. The only practical difference is that the two types have temperature coefficients of opposite polarities.

The types of dc-dc converters are the ones with isolation and the ones without isolation. Isolation makes sence only into very high or very small ratios of Vin / Vout. Vin is the Voltage input and Vout is the voltage output of the converter.

The isolation is applied between input and output circuits by using a transformer.

The main types of converters are buck,boost and buck-boost (without isolation) and Cuk, Flyback and Forward (with isolation).

Electronic Private Automatic Branch Exchange.

Too much for this forum. Look for a night course on telephone technology.

They are essentially crosspoint switches with touch-tone decoders.

Yes, it is normal for a welding machine to convert AC voltage to a DC voltage.

There is no difference in the cables. The only difference is the type of electrical power being transmitted. AC or DC applications use the same wires.

with a voltomiter

Phase modultion is one of the three ways of modulating or altering a signal so that it is able to carry information. The other two are amplitude and frequency modulation. Phase modulation is used in high speed modems.

Thomas Young, a Quaker medical doctor is credited with the invention of the Ripple Tank, still used today in colleges and high schools to demonstrate the basic principles of the wave. The design was simple and has become a classic teaching tool.

Conductor-one which conducts(allow current)electric city in all condition.

Semiconductor-One which behaves like conductor as well as insulator depending on condition.

Insulator-one which donot conduct(allow current)electric city in all condition

The formula you are looking for is I = W/E.

A one diode rectifier is called a half wave rectifier and only allows current flow for the positive portion of the sine wave. A two diode rectifier, or full wave rectifier allows positive current flow during the positive portion of the wave as well as positive current flow during the negative portion of the sine wave. This results in a much cleaner DC power signal. The addition of a capacitor in the output circuit will clean up the signal very nicely.

When an n-type semiconductor is further doped with pentavalent atom, four of the atoms are tiedly bond through the process of covalent bond and one electron is weakly bound and free to move as the temperature rises.