Electronics Engineering

I think you are refering to 'Ohm's Law' where Volts, Amps (I), Resistance (R) (measured in Ohms) have a specific relation to each other:

V = IR, Current x Resistance

I = V/R, Voltage/Resistance

R = V/I, Voltage/Current

Hope this helps, if so, please 'Recommend Contributor'

To answer this question the voltage of the circuit must be stated. That is what the v in kva stands for.

A transistor works by using a small amount of electricity to control a much larger supply of electricity, much like turning a valve to control a supply of water.

Transistors consist of three main parts - a base, a collector, and an emitter.

The base is the part for the larger electrical supply. The collector is the larger electrical supply, and the emitter emits that supply. By sending different levels of currents from the base, the size of the current can be regulated to the collector In this way, a very small amount of current may be used to control a large amount of current, like an amplifier.

ANSWER: A VOM can identify the transistor as NPN PNP just by checking the diodes inside the transistor. Example NPN positive lead to base should show low resistance to the other terminals

A Thermistor is used in many devices that require a temperature reading. These can include fire alarms or vehicle engines. They range in sizes depending on the use. For example it can be small enough to fit onto a circuit board, or big enough to plug a hole in a hose.

A: Well for one thing if it is positive feedback the amplifier will saturate to one one side of the power buss or the other. An operational amplifier open loop gain can be 90Db which a tremendous gain so some negative feedback is necessary to reduce the gain and make the amplifier behave in the linear region for amplification

A typical diode functions only in one direction (forward-bias). When subjected to reverse-bias, the junction will eventually break down under high enough voltage. A zener diode works the same way, but breaks down at a very specific reverse-bias voltage. This is called its zener voltage. Because of this property, a zener diode can be used to regulate the voltage in a circuit. When inserted the opposite orientation as you typically expect a diode, it begins to conduct when the voltage across it reaches the zener voltage. Then the voltage stays at that level. See http://en.wikipedia.org/wiki/Zener_diode for more information.

if input is slowly increased from some arbitary non zero input value it will again be found that out put doesnot change until certain increment is exceeded that increment is called resolution

suspend the magnets from strings in such a way that they only repel each other. (Between two glass plates maybe, so they can't rotate.) measure the angle of the strings.

Knowing the weight of each magnet, the acceleration of gravity, and the cosine of the angle between the strings this should give you enough to calculate the magnitude of the force between the magnets. (Providing you know vector addition of course.)

Baud rate is defined as the number of bits transmitted per sec.

cardioids

Tools required: screw drivers, insulation tape - switch off your geaser, and plug out the power cable from the socket/power supply. Please also close the inlet water entry into your geaser. - remove the outer side of the geyser where the electrical connections are wired. This will need screwdrivers for most of the commercial geysers - Now you will see a big knob with temperature markings (usually 0 - 80 degree celsius) coming out of your geaser tank. - slowly track the electrical connections that is going into the thermostat and disconnect them (usually 2 of them) - Now pull the thermostat out - you will see a long rod coming out from the geaser. Now you are successful in pulling your thermostat out. - Now you want me to reverse-repeat the setps for plugging in the new thermostat in ? :-) - BTW...please note to set the temperature mark in the thermostat appropriately. Usually use the same as it was there in your older thermostat. - after plugging in the new thermostat, and you connect the electrical wiring, close the geyser (with whatever you removed) and open the inlet water entry. You need to plugin the power cable and switch it on again. Hope you find this useful, the new thermostat makes the geyser happy ! cheers, Harish

There is insufficient information in the question to properly answer it. You need to also know the voltage or, alternatively, the power in order to find the resistance given the current. Please restate the question.

The total resistance in a series circuit is determined by adding (summing)

the individual resistances of each component in the circuit.

Comunication is important. the telephone(invented by Alexander Graham Bell) let people talk to each other easily. since comunication is VERY important it changed lives.

I was told it is

x(n) = 10*sin(2*pi*fo*Ts(n-1)) + 8*sin(2*pi*2*fo*Ts(n-1)) + 6*sin(2*pi*3*fo*Ts(n-1))

This should work if the form factor fits your application and other ratings are not exceeded. You want the same capacitance and make sure there are not any embedded components like a bleed-off resistor in the replacement that aren't in the original.

To drop a 12 volt source to 6 volts with a resistor, you have to drop 6 volts. The value of the resistor you need would be 6 divided by the current the device pulls in amps.

For example, if the device pulls a half an amp the resistor has to be 6/0.5 or 12 ohms. As this device runs on 6 volts and draws 1/2 amp, it's wattage is 3 watts (volts x Amps). Common practice is to double this, or the resistor will probably get too hot and may open. I'd use a 10 watt to resistor to maintain a good margin for safety, and they're readily available.

Use a 12 ohm, 10 watt resistor.

Wind turbines are a form of renewable energy that are powered by the wind. The amount of time it takes for a turbine to start up depends on the wind speed on the day, on a very windy day they can be up to full speed within 2 minutes.

Power is another term for watts. It is the product of amps flowing in the circuit, times the voltage in the circuit. The amount of power the circuit consumes is governed by the resistive or inductive load.

Heron of Alexandria invented a steam powered rotating ball in Circa 100 AD. This is the first recorded steam power.

Thomas Savery (1650-1715) was an English military engineer and inventor who in 1698, took out a general patent covering all possible means of pumping water by steam power. It was based on Denis Papin's Digester or pressure cooker of 1679.

Thomas Savery had been working on solving the problem of pumping water out of coal mines, his machine consisted of a closed vessel filled with water into which steam under pressure was introduced. This forced the water upwards and out of the mine shaft. Then a cold water sprinkler was used to condense the steam. This created a vacuum which sucked more water out of the mine shaft through a bottom valve.

Thomas Savery later worked with Thomas Newcomen who had actually invented the atmospheric steam engine and had to share his success with the patent holder.

The first steam engine was invented by Thomas Newcomen in 1712 to pump water from mine, the first being installed in 1712 close to Dudley castle in the Black Country.. Later improvements were made by James Watt And Richard Trevithick.

Richard trevithithick made one of the earliest steam locomotives: locomotion. whi cwheels made it so it derailed quite frequently. Robert stevenson made another called the rocket and has taken much credit for the invention of the steam valve but it was the engineer of sans parell timothy hackworth who invented it.

William Symington invented Efficient Steam Navigation. He was a native of Leadhills, Lancashire and Scotland.

watch mark Williams on the rails for more information or go to beamish open air museum where you can ride on a replica of the locomotives of that day

V = I x R so 120/96.8 = 1.24 Amps.

Magnetic freild

To the naked eye - usually not much. To an oscilloscope (and some gadgets) it'll look like a series of pulses. To the appropriate equipment, those pulses can be anything. TV, music, a voice conversation, financial transactions.