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Engineering
Engineering is an art and profession devoted to designing, constructing, and operating the structures, machines, and other devices of industry and everyday life.
5,839 Questions
How do I obtain an Italian citizenship through marriage?
If you are married to Italian then getting Italian citizenship is very easy. You can apply for Italian citizenship after being resident of Italy for six months. The law was supposed to change in mind 2008 but I am not sure if it has really changed. If you live outside Italy then you can apply after three years of being married. Once you submit your application and all relevant documents you need to sit back and wait two years to hear from them.
How has society been affected by technology?
Technology affects society because it may help us it determines how much we deal with on daily basis in the work world and at home. Technology can be a good thing or a bad thing. Computers help organize important documents where as nuclear weapons and such other destructive forms of technology may harm or kill us all. Technology and how it affects society is all in the eye the beholder. Only you can really decide if, for you, technology is a good thing or bad thing.
Which field of engineering overlaps almost all other fields of engineering?
In this internet world every thing is changing very fast, you are more likely to make progress in life if you are an early adapter to new trends.
In this post you will learn everything about the upcoming new technology *nueralink* in simple way with real life examples. keep reading it till the end
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What are items designed by engineers?
- Electrical engineers design computers, cellphones, televisions, digital cameras, synthesizers, amplifiers, power generation and distribution systems, antennas, WiFi routers, satellites and industrial control systems.
- Mechanical engineers design internal combustion engines, gas turbines, steam turbines, pumps, compressors, vehicle frames, ships, aircraft, appliances and industrial machinery as well as numerous smaller objects and devices.
- Civil engineers design roads, bridges, dams, canals, buildings, traffic control systems, water systems, water treatment facilities and railways, among other things.
- Architectural engineers design buildings and the water, lighting, heating, ventilation and air conditioning systems that go into them.
- Textile engineers design things made from fibers, including fabrics used for clothing, roofing (from tents to stadiums), packaging and decoration, as well as cord and rope.
There are a number of applications where the engineering disciplines overlap and a large project may require a number of engineers from different specialties.
The time constant of a circuit that contains inductance and resistance follows what type of curve.?
1.cosine 2.exponential
3.min-max value
4.sine
WCB stands for "Wrought Carbon" with Grade B.
There are 3 kinds of Grade; A,B & C which define the ductility & tensile strength.
Grade B has very good ductility & tensile strength as compare to Grade A & C.
The combination of carbon and stainless steel.
Why should you need to learn economics as an civil engineer?
You may not need to, but learning more about anything will make your a better employee and more employable.
Differentiate vector and scalar quantities?
William Rowan Hamilton invented the terms Scalars and Vectors with his Quaternions. Quaternions are the sum of a scalar and three vectors. Q=s + ix +jy + kz, = s +v where s is the scalar and ix,jy and kz are the vectors. The rule for vectors is i^2=j^2=k^2= ijk = -1.
Scalar and vector quantities are the two kinds of numbers. Scalar quantities are real number quantities having a positive square. s^2>0. Scalars are commutative s1s2=s2s1.
Vector quantities v, are directional numbers and have a negative square, V^2= -1.
Typical vector denotations are i ,j and k.
Vectors are non-commutative ij=-ji
There are false vectors used in physics today ala Gibbs Heaviside "vectors" where v^2=+1. These vectors are non-associative i(jk) does not equal (ij)k when v^2=+1.
Associativity is true when v^2= -1.
Quaternions the sum of a scalar and three vectors constitutes a four dimensional division space. This is only associative division space. Quaternions contains two associative division sub spaces, the Complex space (Reals + Imaginaries)) and the Real space (Reals).
There is another division space, Octonions consisting of reals and vectors but it is not associative.
How long to get a doctorate degree in engineering?
I assume you are in the US but can only tell you what it is in australia. Basically you have to complete engineering bachelor which is 4 years, 5 with a double. Then do a masters, 1 to 2 years, then do your PhD which is usually 3 years. If you are going to do a PhD think why you want it. If you are into research then go ahead, it will go naturally but if you are just getting the title then I think you can spend the time a bit better on something else. =)
What is the oldest man made structure in London?
I believe it is Cleopatra's Needle which, although only in London since 1877 was originally erected in the Egyptian city of Heliopolis on the orders of Thutmose III, around 1450 BC
Why are the wing tips on modern passenger jets upturned?
Upturned wingtips cause the plane to use fuel more efficiently.
How to calculate fabric consumption?
{(Inseam + Back rise) * Thigh * 4} * GSM /1550 * 12/1000 = Kg/doz
A.C. (alternating current) is typically generated by converting mechanical, rotational energy, into electrical energy, with an alternator. The alternator has a rotating electrical field (rotor) which has two or more magnetic poles. The magnetic field of the rotor is produced by d.c. current through coils wound on the rotating iron core of the rotor. At minimum, the rotor has two magnetic poles, positive and negative.
The rotating magnetic field is magnetically coupled to coils that are wound inside the outer case of the alternator. These coils are called the stator, and they too are wound on an iron core that is built up of many thin laminations. There are two stator coils in a single-phase alternator and three in a three phase alternator. When the positive and negative poles of the rotor sweep past the stator coils, they cause electrical current in the stator coils to move in a particular direction through each coil and connected electrical circuit. The direction in each coil reverses when it becomes magnetically coupled to the opposite magnetic pole of the stator.
To produce a generated waveform of the proper frequency (60 Hz for the U.S. power grid), the alternator has to be rotated at a precise speed, 3600 rpm for an alternator with two poles, and 1800 rpm for an alternator with four poles. Alternators have been built with 20 or more poles for very low rpm machines.
How has the telephone been improved with technology?
Some improvements have been lighter phones, call waiting, caller ID, and conference calls. There have also been advances that help businesses. At the company I work with all the phones are hooked into the computer terminals and they run with a program on the terminal. Open it up and you get a listing of every employee and you just have to click a button to dial their number. I don't know if this really falls under your question, but theres been advances in telephone AI. Instead of having people take your calls a program can look for key words of your question and find the information you need much faster. By next year a person will not be able to tell if they are talking to a human or a program, unless the developer is asked to make the voices sound more robotic.
Hope this helps.
AnswerTelephone conversations started as analog signals over wires. Later, many of the signals were transmitted long distance by microwaves through the air. For several years now, the user's voice travels as digital signal over most of the distance. The normal analog telephone is connected to the CO (central office) through copper wires. This portion of the conversation is in analog form. The analog voice is converted to digital form in the CO and it travels as high speed data to the destination CO, where it is converted back to an analog form to be sent to the end user. More and more analog telephones are being replaced by digital telephones. The digital telephone converts the users analog voice signal from the microphone to a digital signal inside the telephone itself. The digital data then travels to the destination user with very little chance for noise or distortion to affect its quality. The signal is often so good that you often don't know if the connection has been lost or not without the usual hiss and static that we are accustomed to. The digital signals on the public phone system travel by microwave over land, from ground stations to satellites, or as light waves over optical fiber or through the air. Light communications by air are only for short distances.Companies like Vonage, Skype, Covad, and Speakeasy provide what is called VoIP or Voice over Internet Protocol. With VoIP, you can make a call using several methods.
One is by using your computer to convert your analog voice to digital and then transmitting the digital conversation over your digital Internet connection.
Another VoIP method is by connecting your regular analog telephone through the service provider's 'black box'. The box is a device that has its own small computer inside which manages the telephone conversation, communicating with the Internet to find the service provider's server. The voice signal is converted to digital form. The controller then sends the conversation through the VoIP server to the destination user. If the destination user has a VoIP telephone connection they receive the conversation in digital form. If the destination user has a regular analog connection, the digital conversation data must first be converted back into analog form. This can be done in the CO through special equipment designed for this purpose.
Yet, another VoIP method is by using digital telephones on a digital data network. The digital phones can communicate through a VoIP PBX (private branch exchange)to the Internet or directly to the service provider out on the Internet.
Having the conversation in digital form enables several new options. The digital data sent over the network can be saved to a hard drive for later retrieval. Because the signal is digital, it does not degrade with time like an analog signal recorded on magnetic tape. The digital voice can be analyzed by special algorithms to detect stress and other nuances not discernable to the human ear. The digital voice can be manipulated to make it sound robotic, change its gender, or any of hundreds of other effects. Special features can be supported by adding additional data to the data stream. Much more information can be transmitted than that available by the regular Caller ID. Live digital video images can be transmitted along with the voice data. Business presentations can be sent along with the presenter's voice and live video to several remote locations in branch offices.
The traditional analog telephone is converging with the computer data network, entertainment networks, and others.
There are many changes ahead on the horizon.
Answer
Telephone system today integrates the internet and telephone technologies in order to achieve a more efficient an cost effective communication system. Virtual PBX phone system for example allow users to enjoy the benefits of VOIP and the traditional phone systems at the same time.
they made cell phones, and more equipped than the old ones
Defination of pn junction with diagram?
A PN junction is a semiconductor interface formed by joining p-type (positively doped) and n-type (negatively doped) materials. This junction creates an electric field that allows current to flow in one direction while blocking it in the opposite direction, functioning as a diode. The p-side is rich in holes (positive charge carriers), while the n-side contains electrons (negative charge carriers).
Here's a simple diagram representation of a PN junction:
P-type | N-type
+----+ | +----+
| | | | |
| | | | |
+----+ | +----+
In the diagram, the '+' symbols represent holes in the p-type material, and the '-' symbols represent electrons in the n-type material.
How do you calculate the value of two capacitors conected together?
If the internal capacitors are separate, I mean that there are 4 terminals, a separate positive and negative for each internal cap then you can connect them in two ways. If you connect them in parallel (positive to positive and negative to negative) you just add the values together, so if each is 100UF they total 200Uf and the voltage you can apply is whatever is rated on the body. If you want to increase the voltage so you can apply higher voltage you connect them in series, one of the negatives connects to the others positive and the remaining inputs are connected to the circuit (and if each is equal in value) you divide by two so they would only be 50UF in capacitance but the total voltage you can apply is double the rated level on the body. If the caps are of different values it gets more complicated, you have to calculate the C total buy using the following formula: 1/C total = 1/C1 + 1/C2. Then the voltage dropped across each cap is proportional to the values you calculated above. Remember, the total voltage will be dropped across the caps proportionally so if the caps are rated at 50V for example and they are not equal values, you can't connect them up to 100V because the larger of the caps will have more than 50V across it because of the mis-matched value of each.
What is the groups in engineering?
there are lots of possibilities in engineering. a lot of branches
* Aeronautical Engineering
* Aerospace Engineering
* Agricultural Engineering
* Automobile Engineering
* Bioinformatics
* Biological Engineering
* Ceramic Engineering
* Chemical Engineering
* Civil Engineering
* Computer Science Engg.
* Electrical Engineering
* Electronics Engineering
* Fire Engineering
* Industrial Engineering
* Information Technology
* Marine Engineering
* Mechanical Engineering
* Metallurgical Engineering
* Petroleum Engineering
How is power extracted using a hydroelectric dam?
The simplist expaination is water falls from the greater height, to the lower passing turbine blades, causing them to turn, which then turn the genrators which produce electricity.
What is the process of aeronautical engineering study?
Either, do BTEC NATIONAL DIPLOMA IN MECHANICAL ENGINEERING (2 YEAR COURSE level 2/3) or AN AERONAUTICAL ENGINEERING COURSE IN CERTAIN COLLEGES, LIKE SUSSEX, or you could do an APPRENTICESHIP IN AERONAUTICAL/AEROSPACE ENGINEERING and earn while you train. :). The Grades you need will be A*-C in Maths, English and Science (Physics) :)
