Engineering

A PN junction is a semiconductor interface formed by joining p-type (positively doped) and n-type (negatively doped) materials. This junction creates an electric field that allows current to flow in one direction while blocking it in the opposite direction, functioning as a diode. The p-side is rich in holes (positive charge carriers), while the n-side contains electrons (negative charge carriers).

Here's a simple diagram representation of a PN junction:

 P-type      |      N-type
  +----+     |     +----+
  |    |     |     |    |
  |    |     |     |    |
  +----+     |     +----+

In the diagram, the '+' symbols represent holes in the p-type material, and the '-' symbols represent electrons in the n-type material.

If the internal capacitors are separate, I mean that there are 4 terminals, a separate positive and negative for each internal cap then you can connect them in two ways. If you connect them in parallel (positive to positive and negative to negative) you just add the values together, so if each is 100UF they total 200Uf and the voltage you can apply is whatever is rated on the body. If you want to increase the voltage so you can apply higher voltage you connect them in series, one of the negatives connects to the others positive and the remaining inputs are connected to the circuit (and if each is equal in value) you divide by two so they would only be 50UF in capacitance but the total voltage you can apply is double the rated level on the body. If the caps are of different values it gets more complicated, you have to calculate the C total buy using the following formula: 1/C total = 1/C1 + 1/C2. Then the voltage dropped across each cap is proportional to the values you calculated above. Remember, the total voltage will be dropped across the caps proportionally so if the caps are rated at 50V for example and they are not equal values, you can't connect them up to 100V because the larger of the caps will have more than 50V across it because of the mis-matched value of each.

there are lots of possibilities in engineering. a lot of branches

* Aeronautical Engineering

* Aerospace Engineering

* Agricultural Engineering

* Automobile Engineering

* Bioinformatics

* Biological Engineering

* Ceramic Engineering

* Chemical Engineering

* Civil Engineering

* Computer Science Engg.

* Electrical Engineering

* Electronics Engineering

* Fire Engineering

* Industrial Engineering

* Information Technology

* Marine Engineering

* Mechanical Engineering

* Metallurgical Engineering

* Petroleum Engineering

Electricity and Electronics Engineer

The simplist expaination is water falls from the greater height, to the lower passing turbine blades, causing them to turn, which then turn the genrators which produce electricity.

Either, do BTEC NATIONAL DIPLOMA IN MECHANICAL ENGINEERING (2 YEAR COURSE level 2/3) or AN AERONAUTICAL ENGINEERING COURSE IN CERTAIN COLLEGES, LIKE SUSSEX, or you could do an APPRENTICESHIP IN AERONAUTICAL/AEROSPACE ENGINEERING and earn while you train. :). The Grades you need will be A*-C in Maths, English and Science (Physics) :)

The function of the dividing or indexing head is to equally space the required amount of grooves to be cut into a component. An example would be a gear or a shaft with a spline at the end. It can also be used for high precision drilling of holes. cutting hexagons or other shapes, etc. With the right attachments a dividing head can be connected to a universal milling machine's table screw, enabling it to rotate as the table moves along its sideways axis. This is useful for helical grooving of which a drill bit or helical gear are examples.

An almost similar device to a dividing head is a rotary table.

A man Named Ned Yaginsky - he named it after himself

Architect is higher Profession as compare to Mechanical Engineer.

Wattage X hours used per day X number of days used ÷ 1000

one trapozoidal section of 0.5 sloping distance is one side and 0.5 is the another side and 1.0 meter is the horizontal base . what will be the cutting length for it.

diffusion is high temperature process while ion implantation is low temperature process

Siltstones do not have a Mohs hardness. Relatively speaking, however, siltstones are relatively easily broken.

This is known as the Modulus of Elastisity, or Youngs Modulus (in tension/compression) and will be a constant as long as the deformation is in the elastic range.

A computer that is designed small and used to fit and save desk space when space is needed. Some get really small and can attach to the back of an lcd monitor and run off batteries. They have smaller components, smaller cases, smaller power supplies, smaller power usage as well.

The traditional file processing system is the computerized manual filing system. It is when a computer system stores permanent records.

egly

Conducted a lab at school measuring the strain on a soda can when it was opened. Back solving for the force as if the can were a thin walled pressure vessel led us to P = -54.447 +- 0.047288 Psi to 95% confidence.

When objects are cooled down, they contract. Engineers who put up telephone wires in the summer leave the wires hanging slack so that in winter, the wires have a chance to contract without pulling the poles and damaging property or infrastructure.

This would depend on several variable such as: Welding process being used (SMAW, GMAW, etc). Specific type and grade of the Stainless Steel. The required tensile strength, ductility, and corrosion resistance. If you are welding pressure piping, the applicable ASME codes have a table in section IX. AWS D1.6 addresses structural applications. There are three basic types of Stainless Steels. Austenitic, Martensitic, and ferritic. Each has characteristics that differ from each other in the post welded condition. For a good selection of electrodes and their applications, your local welding supplier should have free reference books by various suppliers that will help. These are the same books we us to assist us in developing welding procedures to various codes and standards.

Somebody is doing a Btec.

Go do some research like the rest of us mugs.