Electronics Engineering

THere is no difference i have answered this question i am the best

The voltage drop across an LED varies, but is typically around 2 volts.

silicon controlled rectifires are like transistors,in this function.we can adjust load(lights)by adjusting bias voltage by a potentiometer(veriable resester).

ANSWER: It could be an SCR but most likely is a TRIAC that conduct both +/- of the AC cycle. These devices have the ability to conduct if a gate current is present. So some kind of delay is used to fire the triac at certain angle of the ac The delay is a resistor capacitor network where the resistor changes the RC time constant for firring

The positive terminals in voltmeters and ammeters are generally indicated by a red coloring and a + (plus) symbol. Negative is generally black and - (minus).

Modulating.

The word modem comes from Modulator/Demodulator

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A: Forgetting about the iron which is most important. If the input is 120 volts an you require 12 volts output then the ratio is 1:01 is this enough? NO the 12 volts what current is required? and the primary cannot be 10 turns to get the 12 volts output 1:01 ten turn of 22 gauge wire will burn up instantly with 120volts applied. The design of a transformer is very complex because the transfer is really power to a different level.

Leave that ques in exam

An electromagnetic wave is properly called a Transverse Electro Magnetic wave, or TEM wave. It consists of an alternating magnetic wave at right angles to an alternating electric wave, with both fields being at right angles to the direction of propagation.

The plane of the electric field is defined as the plane of polarization.

The Phillipino television standard is NTSC M, 525 lines, 30 fps.

Ohm's Law requires you know two of three parameters to calculate the third.

Volts = Amps x Ohms

You need to know current flowing through resistance to calculate voltage drop.

If a 10 microfarad capacitor is charged through a 10 ohm resistor, it will theoretically never reach full charge.

Practically, however, it can be considered fully charged after 5 time constants. One time constant is farads times ohms, so the time constant for a 10 microfarad capacitor and a 10 ohm resistor is 100 microseconds. Full charge will be about 500 microseconds.

used to increase the power level of the transmitting signal

Charge the capacitor.

Potential difference is a scientific term for what is more commonly called voltage.

ANSWER: If big enough the battery will see a short initially and then proceed to charge the capacitor at a rate of 63% of the voltage in one time constant defined as RC For engineering purposes after 5 time the time constant the battery will and the capacitor zero potential different. The proper term should be virtual no difference.

You typically create a DC power supply from the low frequency, and use that to run a high frequency oscillator and amplifier. If there needs to be a relationship between frequency in and frequency out, often there is a divider running on the high frequency side in combination with a phase locked loop synching up to the low frequency side.

In a car the power supply is DC so all motors in cars work on DC. Also, AC motors are usually designed for 120 v or 240 v so they would not work on 12 v DC. So the answer is no.

He is retired from Bell Laboratories and since 2002, has been a member of the faculty at the Whiting School at Johns Hopkins University.

The emitter

we can use the Out Put Capacitor Ex Kvar

pulse or clock pulse in a commonly used term and a clock pulse is generally a square wave where the higher voltage represents digital logic '1' and the lower voltage represents the digital logic '0' and the frequency of this wave is manually adjusted depending on our requirement i.e either we need a very fast responsive system or a slow one

digital circuit :- it is similar to electric circuit where the components are placed in a particular manner to get the desired output. on seeing the problem statement first of all we estimate the no. of input as well as no.of outputs and we would try to draw the truth table basin on the given conditions and from the truth table we would derive the relation between output variables and input variables or in other words we express the output variables as he function of input variables and finally we use different gates to connect inputs to get the required output

All real components have both parasitic capacitance and parasitic inductance.

There are several websites online that have diagrams to help a person draw a timing diagram for a memory write operation. The most commonly used memory write operation for RAM varies from 50ns to 500ns.

it is the thremosphere i am taking the apexvs text and i got it right

No, neither will work and they may even be damaged.