0
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
Why doesn't the starting point for summing the voltages around a closed loopmake any difference?
-- If you do the sum around a closed loop, the items that are summed
are always the same items. Arithmetically, starting at a different point
is just a matter of lopping a few of them off the bottom of the list and
moving them to the top, before summing them.
-- The sum is always zero anyway, so it makes no difference where you
start or end.
How do you interface touch-pad module with PIC?
A touch pad screen and hardware sensor return the screen coordinates of where it has been touched.
Using the touch screen simply means that the software has been written in such a way as to make some kind of logical sense out of the coordinates.
I am electronics engineer from which stream i should do MBA?
Some specialties of the MBA are as follows.
- Health Care Management
- Marketing
- Communication
- Entrepreneurship
- Hospitality & Tourism
- Human Resources (HR)
- Accounting
- Environmental Management
- Information Systems
- International Management
- Internet Marketing
- Marketing
- Operations Management
- Human Resource Management
What is meant by distance insensitive communication systems?
Distance is nothing but a clear demarcation of angle which the distant object makes with an eye of the observer.
State the principle of duality of Boolean algebraBoolean?
Principle of Duality helps us to find the possible correct boolean expression. "Any theorem or identity in switching algebra remains true if 0 and 1 are swapped and . and + are swapped." Mathematically f(x1,x2,...,xn,.,+,1,0)=f(x1,x2,...,xn,+,.,0,1) Important point to note is that dual of expression different from the complement of expression. Mathematically f(x1,x2,...,xn,.,+,1,0)=f(x1`,x2`,...,xn`,+,.,0,1); i.e. if x1 belongs to positive logic then x1` denotes the negative logic and vice versa. De-morgans law is helps us to obtain the complement of expression.
What is a De Sauty's bridge and give explanation about it?
De Sauty's bridge is an electric component that provides a method for making a comparison between two capacitors. It measures the values in terms of a standard capacitance.
Is DC voltage and average voltage same?
no, dc volatage is a type of current direct current, ac is alternating current, average voltage could be any type of voltage ac or dc that maintains a constant range
AnswerNo. A DC voltage is exactly equivalent to an AC rms-voltage. So, for example, 100 V (DC) is exactly equivalent to 100 V (AC rms). The average value of an AC waveform is zero.
Why is it inductance does not affect current in a Direct Current circuit?
When an inductor is first activated (when current begins), the flow of charge begins to set up a magnetic field in and around the coil. Since a magnetic field is a real thing, a kind of distortion of spacetime, the act of creating a magnetic field requires energy, and the inductor harvests the energy of the electrons to accomplish this. As a result, the electrons slow, and the inductor can be said to 'resist changes in current' by harvesting and storing energy.
Naturally, there is a maximum magnetic field associated with any voltage, just as there is a maximum wake that can be generated by a ship moving at a given speed. When the inductor is 'fully magnetized,' when the magnetic field of the inductor is as large as the given current can possibly support, it stops harvesting energy from the circuit and simply holds on to the steady magnetic field that it has created. If the voltage should decrease, the magnetic field begins to collapse, depositing that energy back into the electrons, speeding them along. Thus, again, an inductor 'resists changes in current' by discharging energy.
In conclusion, inductors create magnetic fields for energy storage, and they have a maximum storage of energy for a given voltage. In a 'DC circuit,' the inductor has had sufficient time to build up it's storage of energy and no longer harvests energy from the stream of electrons. It is 'full.'
This also explains why the impedance of an inductor is said to be low at low frequencies, where the inductor has time to charge and discharge itself to keep up with the slowly changing voltages, and why that impedance is high at high frequencies, where the inductor is racing to keep up with the changes, constantly harvesting and spitting back energy.
What is working Principal of A pistol?
The working principle of any firearm is that burning gunpowder produces rapidly expanding gasses. Those expanding gasses push the bullet out of the barrel at high speed.
How does ohm loads work with speakers?
A speaker has a minimum rated (reactive) impedance, which varies depending on frequency. This impedance is measured in ohms. Speakers typically are rated 4 or 8 ohms, as well as having a watts rating. As an example, an 8 ohm 32 watt speaker would require an input of 16 volts RMS to develop full power. Again, that impedance varies, and 8 ohms is the minimum over the rated frequency range.
Amplifiers have rating too. This is usually expressed as a certain power into a certain impedance. Again, that works out to a certain voltage and current as well. In order to maximize the power capability of the amplifier, the speakers must match the required impedance. If the speaker does not match, then the amplifier may reach either its maximum voltage range or its maximum current range prior to delivering full power so, it is really necessary to match the stated impedance of the amplifier to the speaker, otherwise you won't develop full power, and you might damage the amplifier.
If you have an 8 ohm amplifer, and 4 ohm speakers, you can put two speakers in series. Conversely, if you have a 4 ohm amplifier, and 8 ohm speakers, you can put two speakers in parallel. The two speakers would split the power, so they can be less expensive.
As an example, one older configuration, known as the "sweet sixteen", consists of 16 eight ohm midrange speakers wired in four sets of four. Each set is wired in series, and the sets are wired in parallel. The resulting impedance is 8 ohms and, since there is a large surface area, the output is very effective in the midrange. Couple that with two 15 inch woofers, and you have a very nice speaker system capable of handling considerable power.
What is alternating hemiplegia?
Alternating hemiplegia is a very rare condition characterized by recurrent episodes of temporary paralysis.
Why do scientists use schematic circuit diagrams instead of drawing a picture?
It is a lot easier and quicker.
Especially if scientists cannot draw (like me)
What is the physical length of a voltage waveform?
Voltage does not have a waveform. The waveform is based upon the frequency of the voltage or current. A battery (any voltage) does not waveform, however the voltage coming into your house (US) has a frequency of 60 Hz. The length of the 60 hz waveform
Length (in centimeters) = (3 x (10 ** 10))/ Frequency in hz =
500 000 000 cmWhy 250 ohm resistance using for transmitter calibration?
In this situation, to calibrate a transmitter you need a power circuit and communicator circuit. The Hart communicator used in the calibration process is connected to the power source circuit in parallel. The power source circuit is the one that has ammeter, 250 Ohm resistor, and power source all connected in series. As the transmitter sends output mA, it creates volt drop across the 250 Ohm resister. Let's say the volt drop across the resistor was 1 Volt.
Now, back to the Hart communicator. It is a load, meaning there will be a volt drop across the Hart communicator. Since it is in parallel with the power circuit, it is also parallel with the resistor. So, the 1 volt drop across the 250 Ohm resistor will also make 1 volt drop across the Hart communicator. Technically speaking, the 1 volt drop across the Hart communicator is only true if its resistor is also 250 Ohm. However, it does NOT matter what voltage drop is in the Hart communcator. It only sees the "relative" voltage drop changes to measure the changes in transmitter outputs.
Not sure what you mean. The equivalent (total) resistance in a parallel circuit is less than any individual resistance.
The formula you are looking for is I = E/R. Amps = Volts/Resistance.
What is the frequency range of video signals?
Video signals have a wide range of data rates and frequencies.
Analog standard definition signals such as PAL and NTSC are int he region of 5 - 6MHz for composite signals. Component signals for standard definition can be somewhat higher at 12 - 15MHz.
Digital signals are measured in bits per second rather than a frequency. Standard definition digital signals in a studio can be 270 Mbits (million bits per second) or 360 Mbits for some signals. HD signals run at 1.483 gigabits per second, about five times faster than SD signals. 1080p signals use 2.966 Gbits, twice the data rate compared to 1080i or 720p.
Domestic HDMI cables carry similar data at similar rates although the data is split across several separate signals. Broadcast standards use a single co-ax to carry all data.
What does a semiconductor have to do with a computer?
- some first generation computers used germanium point contact diodes in their logic gates to reduce their vacuum tube parts count.
- second generation computers used discrete germanium or silicon transistors.
- third generation and later computers use silicon integrated circuits.
How do you measure capacitance using fluke 87?
Just go to this link assets.fluke.com/manuals/87______umeng0800.pdf
What is advantages for laser communication system?
The advantages of laser communication is that it allows very fast communication service between two or more devices than other modes of communications.
It can provide speed more than 1GBps.So it overtakes the LAN or wireless LAN comprehensively
What is corner analysis in integrated circuits?
Corner analysis is a worst-case approach, where you can simulate over multiple corners of process, power supply, and temperature.
