Electronics Engineering

A computer chip used in Xboxes and elsewhere.

A capacitor is used in the 'back end' of a volt' xfmr to smooth out the ripple that occurs when changing from one voltage to another. Given the nature of a cap, it provides a slow rise & fall to fluctuating voltages, sort of like the struts on your car. It dampens the peaks & valleys.

yes.

XL= 2 * Pi * f * L = 6.28 * 60 * .5 = 188 ohms

Shipwrecks occured because the ship was not where the captain thought it should be. There was not a good enough understanding of how the Earth, stars and planets moved with respect to each other.

Calculus (differentiation and integration) was developed to improve this understanding.

Differentiation and integration can help us solve many types of real-world problems.

We use the derivative to determine the maximum and minimum values of particular functions (e.g. cost, strength, amount of material used in a building, profit, loss, etc.).

Derivatives are met in many engineering and science problems, especially when modelling the behaviour of moving objects.

INTEGRATION:

1. Applications of the Indefinite Integral shows how to find displacement (from velocity) and velocity (from acceleration) using the indefinite integral. There are also some electronics applications.

In primary school, we learned how to find areas of shapes with straight sides (e.g. area of a triangle or rectangle). But how do you find areas when the sides are curved? e.g.

2. Area Under a Curve and
3. Area Between 2 Curves . Answer is by Integration.

4. Volume of Solid of Revolution explains how to use integration to find the volume of an object with curved sides, e.g. wine barrels.

5. Centroid of an Area means the centre of mass. We see how to use integration to find the centroid of an area with curved sides.

6. Moments of Inertia explains how to find the resistance of a rotating body. We use integration when the shape has curved sides.

7. Work by a Variable Force shows how to find the work done on an object when the force is not constant.

8. Electric Charges have a force between them that varies depending on the amount of charge and the distance between the charges. We use integration to calculate the work done when charges are separated.

9. Average Value of a curve can be calculated using integration.

in case p type semiconductor mosfet the carriers are holes whose mobility is much less then electrons hence they are not used.

when mosfets were introduced originally PMOS was much more common than NMOS, because process for PMOS devices was simpler. but as process methods improved things transitioned to NMOS due to higher speed of operation due to greater carrier mobility (as explained above) and eventually CMOS due to lower power consumption.

The same was true for similar reasons with bjts: PNP was easier to make but NPN was faster.

because Thomson saw the ray move from the cathode to the anode so the particles have negatively charge

Positive identification occurs when a qualified expert determines that the questioned and known prints contain sufficient quality (clarity) and quantity of friction ridge detail in agreement with no unexplainable differences. Because the skin on fingers and palms is very flexible, no two fingerprints (even one recorded immediately after another) are exactly alike. Fingerprint experts study for years to understand the normal variations caused by flexible skin, by finger movement, by temporary skin damage, and by other factors such as dirt or liquid present on a finger or surface. Even one unexplainable difference means that the fingerprints are not from the same person.

The children's book If You Give a Mouse A Cookie is a great example of a causal chain. Though the ideas are silly (meant for entertaining children), it still shows how A leads to B and B leads to C...

Micro strip antenna has following advantages :

1) Low profile : conformal (most important)

2) Easy to fabricate

3) Can be used in array

4) Easy to feed

the most important use of micro strip is its conformity as it can be conformed to the air crafts, missiles, satellite. A stealth aircraft has about 50-70 micro-strip antennas. the most popular of conformal microstrip antennas are Cylindrical, conical as the are mounted on various parts of aircrafts, missiles etc. they have many use on armament department.

Each image format has a specific use. A bmp file is a bitmapped raster image in black and white. A jpeg (Joint Photographic Experts Group) is the format used for the web and the format used by digital cameras. The quality of a jpeg file deteriorates each time you re-save it because it is compressing the file info, so be careful. A giff file is similar to a jpeg except it is an animated graphics file. A tiff (Tagged Image Format File) is a raster file, usually cmyk color mode and used for printing. An eps file can be either raster or vector, and is used for printing, almost always high resolution and cmyk color. A psd file is a native Photoshop file, usually with layers intact, used for creating/editing the image.

Sonar, Lidar.

Current is regulated by the resistance of the load. That said without voltage no current will flow. Both are intertwined, without all the components you have nothing. Refresh your self with Ohm's law. E = I x R, I = E/R, and R = E/I. E = Voltage, I = Amperage, R = Ohms resistance.Visualize it like a triangle, without all three sides you have nothing. Current is produced by lines of flux cutting through a conductor. Voltage is a measure of the force or power of the current produced.

ANSWER: VOLTS are just potential it can exist without current. The evidence of this potential is evident as soon as we try to measure it since current now have a path no matter how small or large. The load does not regulate the current flow but rather the potential does. If the potential disappear so does the current no matter what load there is.

First, you will need to convert to the frequency domain.

ZR = R; Zc = 1/(jwc); ZL = jwL; w = 50Hz*2pi = 100pi

ZR = 25 ohm; Zc = -j80 ohms; v = 240*cos(100pi + 0)V

Second, combine the impedances, in series.

Zeq = ZR + Zc = 25-j80 ohms

Finally use Ohm's law to find the current. v = i*Z

i = 240 V / 25-j80 ohms = 2.9*e^(j73)A

2.9*e^(j1.28) has a magnitude of 2.9A and a phase of 73 degrees.

Now, you may need to convert back to the time domain.

i = 2.9cos(100pi + 73)A

its a routine for workout see the link below

http://www.fighttimes.com/magazine/magazine.asp?article=1136

Aircraft use 400 Hz for their power supplies because it allows them to use smaller and lighter components.

If a buck boost converter is a part of the circuit, then it is possible.

The basic block diagram consists of a modulator which may be a product modulator or a balanced modulator. The audio input signal is fed to the input of the modulator and there it is being multiplied by the carrier signal which is generated by using a oscillator.

This block diagram in its crude form is given by:

Germenium and silicon are the examples of Semiconductors.

AM radio frequencies are in KHZ, or thousands of cycles per second.

MHZ is 1000 KHZ

648AM on your dial is .648 MHZ

the most common non rechargeable battery is alkaline batteries. the more expensive batteries contain more lithium. the lithium batteries last a lot longer.

you can also buy heavy duty batteries. although it sounds like they should last longer..they don't. heavy duty batteries are actually a step down from alkaline.

The answer is a Series circuit.

some applications are floatings of ships, submarines, icebergs,man,fish and rising of balloons