Electronics Engineering

P=IE

What voltage (E) will be dropped across the resistor? Current (I) = .090 A

Assuming 90 VAC dropped across the resistor, then P=90 x .090 which = 8.1 Watts.

It's a rectifier diode made simply by combining P type and N type silicon. Where the two are joined, forms a junction that allows conduction in one direction only.

A pn junction diode is a diode obtained by by dopping a silicon crystal through the process of covalent bond.

Electronic Private Automatic Branch Exchange

An SCR (Silicon Controlled Rectifier) acts like a switch when turned on. It can also be used as a rectifier.

A resistor drops both voltage and current, however the term "drop" is generally used to indicate a voltage or current drop across the device, so it is more correctly stated that a resistor drops voltage, by allowing the current in the circuit to decrease.

yes

Big Foot

when we look at the curve ,, we can see that before the peak point curve has greater slope as compared to the slope after the peak point .. the reason is PL is given as I^2RL ,,, current is a squared term here . before peak point current is greater so overall change in power is much greater but after peak point RL is greater and current is less now the load resistance is not a squared term... so slope will be less. therefore the curve is not symetrical

Look for a speaker wire touching another connector on the back of the amplifier, sounds like it could be a shorted speaker wire. Turn the volume down and turn the power off first.

you would want to decrease the power consumption of an integrated circuit to reduce power needed and at the same time reduce power dissipation meaning it will run cooler if overall power is reduced. With some families of logic circuits the voltage must be maintained at 5 volts for proper applications. The voltage applied determines the power that can be used effectively.

The 2- 4 ohm speakers can be hooked up in series to make 8 ohms.

you cant hook up the 2- 6 ohm, cause if you put them in series, you have 12 ohms.

If you put them in , parallel you have 3 ohms

out from av to +(4ohms), -(4ohms) to +(4ohms), -(4ohms) to - av. And do the math 4ohms plus 4ohms equals 8ohms.

doing the math on the 2- 6ohm speakers... 6ohms + 6 ohms = 12ohms

I dont think 12ohms would blow your system, but it wont sound right.

now if you raise the volume too loud on the av you will blow the speaker coils out

you may boost the wattage of the 2-4ohm speakers (in series) to maybe 70 watts total

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If you connect loudspeakers in series, the amplifier can not properly damp them, but, unless you are a fairly critical listener, you perhaps won't detect the difference.

Connecting two 6 ohm 'speakers in series will give a load of 12 ohms, and will not "blow" anything.

Connecting a load impedance higher than the amplifier's design load will do no harm at all. The only disadvantage is that the amplifier will not be able to develop its rated power output.

5 ohms in parallel with 20 ohms is 4 ohms. 4 ohms across 200 volts is 50 amperes. However, resistance is a function of temperature, so the 4 ohms will probably be higher, reducing the current. How much depends on the temperature coefficient of the loads.

Both technicians are right, and both technicians are wrong, because not enough information is present in the question, nor in their statements.

Given constant impedance, current should decrease as voltage decreases, while given constant power, current should increase as voltage decreases.

To test polarity on a boiler set the meter to loop, touch the two leads together, and it will buzz or read as "000". This will show you the polarity as well as test for continuity.

The energy comes from an additional power source, like a battery. Via various resistors and capacitors, the energy from the power source is put into the circuit. The signal that enters the ciruit will exit the circuit with a higher energy; the signal has been amplified.

A thermistor an electrical resistor that resistance changes with temperature. There are two advantages of a thermistors one is it been more sensitive that the RTDÕs and thermocouples and two is has a quick response time.

Yes, but you need a circuit (a PLC may be of help) to convert the potentiometer output (say 0 V to Vmax) into angles.

A conventional potentiometer (linear) powered by a constant voltage power supply will work for angles from 0 to 90 degrees, since the voltage you get will be proportional to the angle sinus, starting from zero up to Vmax @ 90 degrees.

For angles from 0 to 180 degrees (or -90... 0... +90 degrees) it will be easier with two power supplies connected in series taking the middle point as zero (Volts). Positive voltages from the potentiometer cursor against zero will be obtained for positive angles and negative voltages for negative angles, but you might need a 360 degrees or multiturn potentiometer. There is the basic idea, the rest is yours...

letter symbol is L

A mechanical vibration can reach a self resonance possible destroy itself and everything connect to it

Deep level diversity is wherein individuals feel they diverge from members of a work group. This is the degree to which individuals differ in personality, values or attitudes.

An battery to light and back or Wires to TV and back.

You can try to charge two 12 V batteries at the same time . Using a series circuit, place both batteries next one to another, and connect the negative pole of one of them to the positive pole of the other. Then use the remained poles to connect to the charger. The only other way possible, is to change the transformer, but this would be as expensive as buying another charger.

A self commutated is one which the means of communication is included with in the inverter itself.This is the case for circuits including electronic poer switches with turn off capability.

Lithium-Ion (li-ion) batteries have no memory, new laptops use these