Electrical Engineering

The same as the time constant of a 2.7 microfarad capacitor and a 33 ohm resistor connected in series.

You can change the channels on a television and watch things.

Most people in the world know the answer to that, even people who don't have a television (but most people do)

The unit for electric potential difference is the volt (V).

Well, both work on what is termed the 'motor principle', i.e. a current-carrying conductor, when placed in a magnetic field, is subject to a force perpendicular to that field. But that's where the similarity ends, for the operating coil in a galvanometer is restricted to move within an arc, whereas a motor's coil will continuously rotate.

An exciter in electrical engineering refers to a device that provides the necessary excitation current to the field winding of a synchronous machine, such as a generator. This excitation current is essential for establishing the magnetic field required for the generator to produce electrical power. Exciters can be either rotating (mounted on the same shaft as the generator) or static (using solid-state technology), and they play a critical role in regulating the output voltage and stability of the generator.

Lots of things - your car has a engine that is used as a generator (your alternator). Cell phones that vibrate have a small electric motor with an uneven weight on the rotor which causes vibration as it spins. Fans (heater, attic, computer, etc.), many different toys - remote control cars, some airplanes, etc. Electric golf carts and cars. The list goes on and on.

An example of a circuit protection device is a fuse. Another example is a circuit breaker.

The starter should easily fit into the florescent fixture by sliding it into the hole and then securing it by twisting it in place. If you are having issues, you may need to check to ensure that you have the correct size starter for your florescent tube.

The capacitor has no resistance which your direct current ohm meter can show.

There are 3 type of power distribution namely loop,network and radial.Radial distribution is the type of power distribution where the power is delivered from the main branch to sub-branches then it split out from the sub-branches again. it is the cheapest but least reliable network configuration.

Transformers change voltage and current from the primary side to the secondary side, while keeping the power in equal to the power out (minus losses). Any transformer will increase the voltage applied to the secondary (or low voltage side) to the primary (or higher voltage side).

The fact of your asking really says you would need a lot of coaching to keep you out of trouble here. Meters, by nature, aren't really designed to be dependably or safely put into electrical outlets. I suggest you buy a outlet tester at your local home store for $6- or so. Instructions are with it, and all you do is plug it in- generally two green lights is good, any red is bad, none is dead/no voltage. If you are inside a power panel and asking this, I refer you to the first sentence above :) lbg

I would love to help you, I just need to know what type of meter you are using. There are so many you could possibly have. Post another question and I'll see if I can help.

Andy

Reverse Bias

Multiply the amperage times the volts. This will give you the wattage.

There are 2 formulas that are, together, considered Ohm's Law. They are:

E(volts) equals I(amps) times R(resistance), and

P(power, or watts) equals I(amps) times E(volts), which is what is stated above.

From these two formulas and with the application of algebraic manipulation you get a total of 12 equations that can be used to determine most answers to technical electrical questions.

The transformer operates in reverse. In other words, a step-down transformer becomes step-up, and vice-versa. Example: a transformer with a 480 volt primary and 120 volt secondary: Ratio = 4:1 (480/120=4) Fed in reverse - Ratio = 1:4 Apply 120 volts, output is 480. Note that if you accidentally reverse the transformer, still feeding it with 480 volts, the output would be 1920 volts (480 X 4 = 1920) - probably not a good thing!

To design a simple integrator with an op amp, place a resistor and capacitor in series in the feedback loop, between output and inverting input. Place another resistor from circuit input to the inverting input. Ground the non-inverting input. The current through the input resistor will be balanced with the current through the feedback resistor. Since there is a capacitor also, the voltage slope at the output will be proportional to the current. If you want the capacitor to discharge faster in one direction, you can place a diode (and optional resistor) across the feedback resistor.

This works because the capacitor resists a change in voltage, proportional to current, and inversely proportional to capacitance. The equation is dv/dt = i/c. This means that dv/dt is linear with constant i and c.

In this configuration, a constant current input will be balanced with a linear voltage ramp on the output, limited only by the range of the op amp. Constrast this with a simple RC circuit - with constant voltage, the RC circuit will exhibit a logarithmic output.

If, for instance, you were to drive this circuit with a square wave, the output would be triangular. With the diode, the output would be sawtooth.

This lab effectively showed how the Wheatstone bridge provides a mechanism to calculate an unknown resistance using the known relationships given through the resistivity correlation to length. It demonstrated how to set-up a Wheatstone bridge and how to manipulate a Wheatstone bridge in a laboratory setting. In addition, the lab provided a demonstration of the aforementioned linear relationships. Although significant error existed in this lab, the results still reflect the relationships governing the Wheatstone bridge sufficiently for understanding in an experimental contextual environment

unknown resistance using the known relationships given through the resistivity correlation to length.It demonstrated how to set-up a Wheatstone bridge and how to manipulate a Wheatstone bridge in alaboratory setting. In addition, the lab provided a demonstration of the aforementioned linearrelationships. Although significant error existed in this lab, the results still reflect the relationships

governing the Wheatstone bridge sufficiently for understanding in an experimental contextual

environment

If voltage increases when current remains constant then resistance must also increase.

Ohm's Law: Voltage = Current times Resistance.

what are the major advantages of dry type transformers over oil type transformers