What is dynamic error coefficients in control system?
static error coefficients are the error calculated when steady state is reached. so, the dynamic error coefficients give the error calculated with time.
it just calculated by taking the inverse Laplace transform of E(s) term resulting in the equation:
e(t)=k0 r(t) + k1 r('t) + k2 r''(t) + ...
where, k0: position error coefficient
k1: velocity error coefficient
k2: acceleration error coefficient
sks..
The audible range is the lowest and the highest pitch sound we can hear.
So for the human ear it would be 20Hz to 20,000Hz.
More Information...
The higher the sound the closer together each sound wave would be
For even more explanation
http://www.bbc.co.uk/schools/gcsebitesize/science/aqa_pre_2011/radiation/anintr oductiontowavesrev2.shtml
You can do the experiment de-sauty bridge with dcsource?
No, because the capacitors used in the bridge will act as a open circiut, due to the fact that the frquency of the supply is zero, (so 2*pi*f) becomes zero and the capacitive impedence will become infinity.
Are sim cards re-programmable?
well. well. well. there are 2 answers for this question. and a yes and a no.
for example in my case. i do travel to many cities and there i have to get a new sim card and insert it in my mobile. rather than carrying 2-3 bulky mobile phones? i can push all the data and sms and a-z info which can be stored in the sim card to another sim card. at present i got 8 sim cards and all are working and all from different cities. so i need to get an 8-in-1 sim card empty and reprogrammable so that i can push all the data from those 8 cards to one card and use it in one single card. this is the positive side of technology, where during dire need you can help yourself by saving time and money
going to a professional and get it done. you got sim card readers from companies like gemplus which offers a wide variety of sim card reader. and you can read the data and copy it to the blank sim card using the same reader which will then act as a writer. you (also may) recover deleted data as well, like accidentally deleted SMS and phone calls made of your phone via bluesnarfing and other techniques, you may recover the old untampered data before you got a sms virus from a very good well wishing friend of yours and recover the data and also use multiple cards. its programmable. yes.
but now the dark side. someone may sniff your mobile phone and smart cards used to punch in open locks off offices and blah blah devices and etc use imagination and gain access to your secure data. they may copy your mobile details, may get your bank account and pin and credit card and debit card pins and what not, anything which has to do with technology and profit is main motive and also industrial espionage. they may even clone your sim card and its not that tough. and you end up paying for those calls you never made, nor will ever. use imaginations to visualize how it may ruin/screw ;-) your life or someone else's.
blottom line: like 2 sides of a coin there are plus and minus points to each and everything. you need to decide which side are you in. and same with
technology too. you can use it to have fun and have profit at the cost of someone else and also may learn and develop.
check out "the hackers choice" wiki google:the hackers choice and go to non-german and wiki up and look for cellular technology. you got a heck-a-load of info on this topic. and how you use is upto you. good luck.
p.s. before your adrenaline rushes to do something nastily evil think Z times, measure many times cut once. i.e. if you are a whistle blower? you may use it for your wishfull purpose else you may use it for the reason i am using it. backup 8 sim card's data and stuff all those in one. and save me space and hassle of carrying 3-4 mobile phone or 2-3 mobile phone with dual simcard, just use one universal sim card does the trick.
good luck.
-some anony"mouse" :-D cheese!
How long does piezo material last?
Great question: A piezoelectric material such as quartz might a very long time, but they do age. But for applications where absolute frequency stability is needed, other methods are used. See: http://en.wikipedia.org/wiki/Crystal_oscillator
Difference between built-in and countertop microwaves?
a counter top sits in the open and vents without restrictions. a built in can be enclosed but has to have enough open space around front to vent...
On which mechanism does a hair clipper work?
A hair clipper is nothing more than an electric motor with a cutting blade attached to it. The motor shaft is usually connected to the blade in a fashion that moves it side to side. One way to do that is by connecting the motor shaft to a wheel, cam, or rod that changes the rotational motion of the shaft to the desired motion of the blade: side to side, up and down, etc. The method commonly used is an eccentric ( a cam lobe ) connected to the motor shaft. The eccentric is then placed into or onto the cutting blade which moves in a guide. If you look close while a hair clipper is running, you can see that the motion of the blade. It moves slightly up and down as well as the desired side to side motion. That is a result of the offset of the eccentric from dead center of the motor shaft as it makes a revolution.
An analog signal is a continuous signal that contains time-varying quantities. Unlike a digital signal, which has a discrete value at each sampling point, an analog signal has constant fluctuations. netonplus.com
How many types of furnaces are there?
* Walking Beam Furnace * Walking Hearth Furnace * Roller Hearth Tunnel Furnaces for thin slabs * Rotary Hearth Furnaces * Pusher Furnaces
Formula for least count of any measuring instrument?
because someone stuck a boy in his a##............lol
What is a magnetron oscillator and where is it used?
A magnetron is a high power microwave oscillator, and it is used in microwave ovens and radar transmitters as well as some other applications. The magnetron itself is actually a special kind of vacuum tube - a vacuum diode - that incorporates some unique structural elements and has a permanent magnet included in its construction. This magnet is set up to affect the path of travel of electrons that are in transit from the cathode to the plate. Links are provided to relevant Wikipedia articles.
It's a sine wave (if there is no distortion). Voltage is zero at 0 degrees, at its positive peak at 90 degrees, back to zero at 180 degrees, at its negative peak at 270 degrees, and back to zero at 360 degrees.
At resonance...a parallel tank circuit matches the applied sine voltage so close that there is almost 0 current flow from the source...i.e., max impedance at resonance...the capacitor and inductor are swapping energy with each other in tune with the source...
visualize it...in order to have 0 current flow for an incoming varying voltage...that would mean that the tank voltage would be varying exactly at the same frequency and voltage!
Thus...you have effectively "tuned" into a voltage which would be critical in 'tuned' voltage amplifier...
A series resonant circuit does not tune into a voltage...in fact at resonance the voltage across the inductor capacitor will be 0!...a short or minimum impedance condition
Of course my discussion assumed ideal components...in the real world there will be 'stray' resistances which will alter the results in magnitude to the size of the resistance...
Hope this helps
What windows utility can you use to list all the currently running programs?
To get the Task Manger Simply press Or Right click a blank area on the taskbar and then select Task Manger Or
Does thickness of a metal affect its electrical resistance?
Metals are conductive, but are not perfect conductors and so they have some electrical resistance. How the resistance of the metal is affected by "thickness" depends on what you mean by thickness. If the electrical current has to flow through a longer piece of metal, then the resistance of the metal to electrical flow would be greater. However, if you take that same length of metal and increase the area of the metal by increasing its "thickness", then the resistance of the metal becomes less.
What is the mean of pnp low freequency transistors?
There are two basic types of bipolar transistors. One being the NPN and the other, the PNP. In your situation, you're dealing with a PNP transistor, that requires a negative going voltage on the base connection to make it function. Without going into all the details, there are several ways in which this transistor can be utilized.
The low frequency refers to the frequency range in which a transistor will function. The low frequencies could be for audio, power regulation or several other applications where dealing with signals in the higher frequency ranges aren't necessary, such as radio frequencies.
How working of the microcontroller baesd industril timer?
There are different types of industrial timer like ON Timer, OFF timer, Cyclic Timer, sequential timer there basic function is the same to turn ON/OFF devices at particular time or after a specific durations
check this link for a simple microcontroller based ON timer where where a device is turned ON for a specific duration after a switch is pressed
http://www.dnatechindia.com/index.php/Code-Library/8051_ASSEMBLY/ON-Timer-Program.html
here is another link for adjustable cyclic timer where a device is turned ON/OFF continuously for a specific duration
http://www.dnatechindia.com/index.php/Kits/Microcontroller-Kits/Adjustable-Cyclic-Timer.html
Difference between electricals and electronics?
what is the main difference between electrical and electronics ?
In short: electrical circuits handle transfer of energy - electronic circuits handle transfer of information
What is the working principles of dth?
Direct to home (DTH) television is a wireless system for delivering television programs directly to the viewer's house. In DTH television, the broadcast signals are transmitted from satellites orbiting the Earth to the viewer's house. Each satellite is located approximately 35,700 km above the Earth in geosynchronous orbit. These satellites receive the signals from thebroadcast stations located on Earth and rebroadcast them to the Earth
The Overall System
Early satellite TV viewers were explorers of sorts. They used their expensive dishes to discover unique programming that wasn't necessarily intended for mass audiences. The dish and receiving equipment gave viewers the tools to pick up foreign stations, live feeds between different broadcast stations, NASA activities and a lot of other stuff transmitted using satellites. Some satellite owners still seek out this sort of programming on their own, but today, most Direct to home TV customers get their programming through a direct broadcast satellite (DBS) provider, such as DirecTV or the Dish Network. The provider selects programs and broadcasts them to subscribers as a set package. Basically, the provider's goal is to bring dozens or even hundreds of channels to your television in a form that approximates the competition, cable TV. Unlike earlier programming, the provider's broadcast is completely digital, which means it has much better picture and sound quality. Early satellite television was broadcast in C-band radio -- radio in the 3.4-gigahertz (GHz) to 7-GHz frequency range. Digital broadcast satellite transmits programming in the Ku frequency range (12 GHz to 14 GHz ).
Can you send or receive a text message at home using a cordless phone?
You can receive text messages on a landline phone, but you cannot send them.
do your homework for you. Nor will we write critiques, essays, discussion papers or summaries. This is considered cheating.
We will, however, assist you should your questions be specific.
Definition of electronic media?
Electronic media is content delivery that relies on electricity. This is the opposite of something like static media where things are in physical form requiring a user to access it with energy like a printed paper.
Is optical fiber unidirectional?
The optical fiber can be used both as unidirectional and bidirectional. The main application of optical fiber is in long-distance links, so there exists no need to employ them as unidirectional. For each direction different wavelengths are used to modulat the signals. At the same time many bidirectional signals can travel through the same optical fiber.