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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
What is the difference between an electrical appliance and a machine?
The machine can work by itself, but and electrical appliance needs somebody to manipulate it...like an iron for example.
What is the Resonant frequency of cooper atom?
Resonance is the tendency of a system to oscillate at maximum amplitude at certain frequencies, known as the system's resonance frequencies (or resonant frequencies). At these frequencies, even small periodic driving forces can produce large amplitude vibrations, because the system stores vibrational energy. When damping is small, the resonance frequency is approximately equal to the natural frequency of the system, which is the frequency of free vibrations. Resonant phenomena occur with all types of vibrations or waves: there is mechanical resonance, acoustic resonance, electromagnetic resonance, NMR, ESR and resonance of quantum wave functions. Resonant systems can be used to generate vibrations of a specific frequency, or pick out specific frequencies from a complex vibration containing many frequencies.
Resonance was discovered by Galileo Galilei with his investigations of pendulums beginning in 1602.
As the drain voltage is increased for a junction FET in the pinch off region then the drain current?
Remains constant
What land is used in making ipods?
China, is the country that builds them.
Actually, they build most everything :)
Why transformer is not called an amplifier?
In an ideal transformer the power in equals the power out there is no gain. In an ideal amplifier the power out equals the Gain *Power In.
An ideal transformer transforms energy at a ratio of its windings.
For example an ideal 1:10 ratio transformer (step up) would convert a 10Volt input at 10amps to a 100Volt output at 1Amp. Or conversely an ideal 10:1 ratio transformer (step down) would convert a 10Volt 10Amp input into a 1Volt 100Amp output.
Since Power = Voltage * Current we can see the power in equals the power out in an ideal transformer.
In an ideal amplifier the power out is greater than the power in. This is defined as the gain of the amplifier.
An ideal amplifier with a Voltage gain of 10 would take a 1Volt 1amp signal and amplify it into a 10Volt 1 amp signal.
An ideal amplifier with a Current gain of 10 would take a 1Volt 1Amp signal and amplify it into a 1Volt 10 amp signal.
Since Power = Voltage * current we can see the power in is less than the power out showing a gain in power.
A circuit with a 2 ohm resistor and a 4 ohm resistor in series with a 12 volt battery will have 2 amps flowing through each resistor. The current is the same in each resistor because they are in series, and a series circuit has constant current throughout.
A: THERMOCOUPLE has the characteristic of both negative and positive temperature a room temperature it is still sensing the temperature it will not go to zero except for a specific temperature and that will change for each metal used
What is mean by Matched pair of Transistors?
Two transistors of the same type, {such as two bipolar NPN, or two bipolar PNP, or two enhancement N MOSFET,} which by either manufacture, selection, or both have similar characteristics. The closer the characteristics, the better the match. The most important is input matching, both at 25 degrees C and through the use temperature range. This is perhaps best done by making them together, next to each on a single die. The second most important characteristic for bipolars is Beta (hFE also hfe)), the forward static and dynamic current gain, or for FET's forward transconductance. Breakdown properties are not important as the pair can be rated for the lowest breakdown. Matched transistors are needed for balanced differential stages (normally used for amplifier inputs) and for bridges.
What is the basic principle of digital television?
Digital television is simply the process of broadcasting a digital signal, instead of an analog one. This results in better sound and picture quality, as well as increased coverage.
What are the LG Neon ringtones?
- ARE YOU READY (mp3)
- AT&T TONE (mp3)
- CLOUD (mp3)
- LAW OF MOTION (mp3)
- ROBOT (mp3)
- TELEPHONE (mp3)
- THIS TIME (mp3)
TREMOLO (mp3)
The threshold voltage will be increased (in case of an N-Mos), because the charge in the depletion region formed under the channel will be more (high density) and hence gate voltage has to overcome this charge for strong inversion.
Vt = (work function difference of gate and substrate) + 2*(substrate Fermi voltage) + (Qd/Cox)
Where, Qd = charge in Depletion region in Coulomb
Cox = Oxide capacitance
How a digital computer work.how can we define a digital computer and analog cmputer?
- Digital computers work with exact discretely coded representations of numbers.
- Analog computers work with approximate continuous representations of numbers.
- Hybrid computers are computers that are part digital part analog.
I have used all three types, each has advantages.
What electronic diode will replace IN4002 andIN4148?
IN4003/4/5 can replace the IN4002 - They are all part of the IN400X family and share the same caracteristics for everything except voltages.
Why are moving iron test instruments not used with DC although they can work in DC?
For moving-iron instrument magnetic field is caused when the current (voltage) passes the fixed circle. When the current (voltage) passes the fixed circle，the two iron plates are magnetized ,rotational torque is resulted, the deflection angle indicate measured current. Because the magnetized polarity is same for AC or DC, moving-iron instrument can be used in AC and DC circuit. For permanent-magnet moving-coil instrument magnetic field is caused by the permanent-magnet, When the DC current passes the moving coil, rotational torque is resulted,so the deflection angle indicate measured DC current. As AC current passes the moving coil ,because inertia of moving parts of meter the deflection angle indicate rotational torque average, but rotational torque average is zero in cycle, moving parts of meter is´t deflec,so permanent-magnet moving-coil instrument only is used in DC circuit.
Why does a digital tuner for HDTV have a analog to digital converter?
The digital tuner also demodulates the normal analog broadcasting. The tuner outputs a analog composite video signal to Video Processing Chip. In that chip, there is a ADC to convert the analog to digital, then after procession, display the content on the screen
What is the difference between image processing and digital image processing?
Digital uses mega pixels ... vs film resolution is based on the area u have to record the image
Is there a list of software companies in bahrain?
Bahrain Smart eSolutions Co. (BSeS)
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Email: info@bses-bh.com
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Unique Solutions W.L.L (Tel: 13688998, Mob: 36230270,
Kanoo Information Technology, a division of E K Kanoo Group of companies.
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What device can the speed control of the air flow in a pneumatic device?
you actually answered your own question, there are many different speed control devices for pneumatics,since there so many applications finding the correct device may take some research. make sure that the device is suitable for the high pressure side of the system,basically a speed control device is a throttling valve
What lenses are used in an X-ray machine?
Well, none. It is possible to focus X-rays with elaborate structure using grazing incidence, by Xray machines don't use them or any other focusing devices.
What is the current value of a Remington model 78 sportsman 30.06 in 85 condition?
In 85% condition it is worth between $200-$250 dollars. In 95% they go for about $350.
Can you run a disc man off of an AC DC adapter that puts out more power than is needed?
Hi,
IF the voltage rating is the same, the output in current (most likely in milliamps or ma) of the adapter is relatively inconsequential as long as it's at least what the Discman originally required, or a bit higher.
For instance, if the Discman requires 6 volts at 250 milliamps (250 ma) and you have a 6 volt adapter that has 475 ma. available, you should be able to run your Discman off of it with very little problem.
Also be sure that the different adapter has the same polarity at the plug as the original though, or it could be catastrophic.
Hope this helps,
Cubby
