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Electronics Engineering
Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.
24,372 Questions
Does diode flow current in reverse bias?
Diodes will have a small leakage current in reverse bias. In most cases, this current can be considered insignificant and ignored.
Why open loop gain of op-amp is very high?
A; An ideal op amp should have infinite open loop gain so when the loop is closed with negative feedback it will be stable
Bryce, Fax machines are analog devices and they way that they communicate requires an analog signal on the phone line. As you have recently upgraded to digital phone lines, the fax machine by itself will not work. You can contact Sprint to see if they will provide an adapter to allow the analog signal to work. Another alternative would be to purchase a digital fax machine. Thank you for your question. If you found this answer helpful, please click the Accept button!
What is function of full adder?
A "half adder" circuit computes the resulting bit and carry bit from adding two bits together, assuming there is no carry (using an "exclusive-or" and an "and" operation, respectively). This is sufficient for the lowest-order bit, only; the remaining bit positions require a "full-adder" circuit to compute the result and carry from three inputs at each successive bit position (i.e. the two operands and the carry-in from the previous bit position).
The ratio of current flow through individual branches of a parallel circuit is inversely proportional to the ratio of resistance of each branch.
What is the net charge on the charged capacitor?
there is no net charge on the capacitor because nomber of positive and negative charge and negetive are equal.
All cells have internal resistance. The value is very small when the cell is fresh. The value increases slightly and slowly as the cell discharges.
So the potential difference across the cell will not noticeably change when a load is initially connected. As the cell becomes more discharged, the drop in potential difference upon connecting a load will increase.
The point at which the cell is no longer any use depends on the minimum voltage which the load requires, and the current required by it.
What is principle of autotransformer?
to step up or step down high voltage
AnswerThe principle is that of electromagnetism.An auto transformer has only one winding which has (usually) one tap on it.
If a voltage is applied across the whole winding, and connections are made between one end and the tap, a lower voltage is available on those connections.
The magnitude of that voltage has a ratio to the overall applied voltage as the ratio of the number of turns across which the voltage is taken, to the total number of turns.
Or, if a voltage is applied between one end of the winding and the tap, then an increased voltage may be obtained across the whole winding.
The ratio of the two voltages being the same as the ratio between the number ..... but I'm sure you can guess the rest.
How is University of Hertfordshire ranked in the World University Ranking?
Its poor.....Its overall ranking is around 60-70.....It may vary according to the subjects..
What is the name of the electrical pressure that causes current to flow in a circuit?
Electrical pressure is called "electro-motive force" (EMF). It is measured in volts.
Pressure and the quantity of electricity transmitted can be considered analogous to pressure and quantity of water flowing in pipes: the longer the distance, the higher is the pressure (called the "voltage" for electricity) that is necessary to pump the flow of water (called the "flow of electrical charge, which is also known as the "electric current").
That is why, for long distance transmission, high pressure (voltage for electricity) is required, failing which, the current - and therefore the power - will not reach the intended destination. Instead, it will be lost (also called "dissipate") along the way.
We can think of electrical current as the quantity of electricity which will be drawn from the pipeline (= cables for electricity) at the pressure (= voltage) required.
== == Add a capacitor or a synchronous motor or a phase advancer to the transmission line so that it can nullify the effect of inductive reactance since the above elements gives capacitive reactance. Doing this also improves the power factor.
It is a the current drawn by the application that is connected to the power source
In a multistage amplifier input impedance is high and output impedance is low justify the statement?
no. input impedance is low & output impedance is high
full adder is made of x-or gates and gates and inverters.it can also be made of two half adders and one or gate.full adder consists of 3 inputs lines and 2 output lines which can be named as sum(s) and carry(c).it is a combinational circuit.
s= a xor b xor c(if inputs are named as a ,b,c)
c=ab+bc+ca
What are the advantages of volt ohm meter?
If there is a meter that shows volt and ohms then it is showing you the amount of voltage and resistance there is. However these meters are two separate devices with different uses.
AnswerA 'volt ohmmeter' ('VOM') is a term used in North America to describe what is known, elsewhere, as a 'multimeter'. A multimeter combines the functions of a.c. and d.c. voltmeter, ammeter, and ohmmeter. The advantage of a multimeter is that it avoids the necessity of having to carry about six separate measuring instruments.
Who measure of charge differential voltage?
Any one using a voltage test instrument can measure charge differential voltage.
Why do technicians label their circuit component values?
For exactly the same reason that the components are manufactured with different
values. The reason is that a circuit will work the way you want it to work only if you
build it with components of certain definite values, and if you use other values then
the circuit will not work.
When you write or draw a description of the circuit, it's not good enough to say
"hook up a capacitor here" and "put a resistor there". If their values are wrong,
then the circuit either produces nothing or else it produces smoke.
Why you need to connect resistor in series for the practical voltage source?
A resistor is connected in series with a practical voltage source in order to determine the current produced by the source.
What are advantages of clap-on lights?
- A Switch can not break
- Little Kids can easily turn the lights on and off
- We no longer have to get up and click the Light Switch
Why are series circuits sometimes called current coupled or daisy chain coupled?
daisy chains are strings or loops of actual growing daisy flowers. To make a ckain, you pluck a blossom with about 2" of stem. With your fingernail, make a slit along the stem so that you can slide the stem of the second daisy through it..DON'T PUSH IT ALL THE WAY THROUGH. When the blossom of the second daisy reaches the slit in the first stem,STOP!!
Now,holding the 2 stems together, slit the second stem just like the first and insert a third daisy stem into this slit.
Now,holding the three daisies in a chain together,make a slit and insert a fourth stem.
continue until your daisy chain is as long as you wa-ooops- one of the slits in the chain etended to its end and broke that segment.
you did all that work before and after the break,but the daisy needs fixing.
my grandmother taught me how to daisychain.
A transistor is a device used to switch power between electrical components. Transistors work to amplify existing signals as well as open and close circuits.
How far does electricity travel in 7 milliseconds?
So for a typical AC current in a typical lamp cord, the electrons don't actually "flow," instead they vibrate back and forth by about a hundred-thousandth of an inch.
What buttons to push if no led display c280?
If you mean you cannot read the display on your mileage, odometer, and other items go to http://www.bba-reman.com/
Should you connect both ends of a battery in to a circuit?
The circuit won't do anything until both terminals of the battery are connected
to the correct [two different] points in the circuit. As long as either terminal of
the battery remains disconnected, the circuit is "OFF".
