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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
What are the advantages of CASE tools?
a class of software that automates many of the activities involved in various life cycle phases. For example, when establishing the functional requirements of a proposed application, prototyping tools can be used to develop graphic models of application screens to assist end users to visualize how an application will look after development. Subsequently, system designers can use automated design tools to transform the prototyped functional requirements into detailed design documents. Programmers can then use automated code generators to convert the design documents into code. Automated tools can be used collectively, as mentioned, or individually. For example, prototyping tools could be used to define application requirements that get passed to design technicians who convert the requirements into detailed designs in a traditional manner using flowcharts and narrative documents, without the assistance of automated design software
HTML stands for Hyper Text Markup Language. It is used to code (program) the basic elements of the web and webpages. Basically, it is a way to set the basic blocks for other languages (like Javascript and CSS) to manipulate. HTML stands for Hyper Text Markup Language. It is used to code (program) the basic elements of the web and webpages. Basically, it is a way to set the basic blocks for other languages (like Javascript and CSS) to manipulate.
What are theApplications of stack in data structure?
1. Expression evaluation and syntax parsing
Calculators employing reverse Polish Notation use a stack structure to hold values. Expressions can be represented in prefix, post fix or infix notations. Conversion from one form of the expression to another form may be accomplished using a stack. Many compilers use a stack for parsing the syntax of expressions, program blocks etc. before translating into low level code. Most of the programming languages are context-free languages allowing them to be parsed with stack based machines.
2. Runtime memory management
A number of programming languages are stack oriented , meaning they define most basic operations (adding two numbers, printing a character) as taking their arguments from the stack, and placing any return values back on the stack. For example, Post Script has a return stack and an operand stack, and also has a graphics state stack and a dictionary stack.
3. SecuritySome computing environments use stacks in ways that may make them vulnerable to security breaches and attacks. Programmers working in such environments must take special care to avoid the pitfalls of these implementations.
Translate the system performance
Why capacitors cannot be used with direct current?
DC does not travel through a capacitor for long because there is a buildup of charge on the plates and when the voltage matches the supply voltage, mo more current flows.
But capacitors are used to smooth a DC supply because a capacitor acts a bit like a small battery and can prevent any rapid fluctuations in the supply voltage.
What language is used for robot programming?
A bot can be written in a server-side language like php, asp, etc.
How much fuel does a cargo ship use?
Many ships use MDO or Marine Diesel Oil, sometimes also known as #2 Diesel. Ships can also use HFO or Heavy Fuel Oil or Bunker C. These are crude oil derivatives that are largely unrefined. They are very thick and need to be heated by steam in order to reduce its viscosity to allow them to flow.
What are guided unguided media?
guided media is the transmission medium in which data/signal is guided by the cable or wire so used to a specific path. there are 4 types of guided media
--> open wire
-->twisted pair
--> co-axial cable
-->optical fibre
for more details open the link -----
http://www.techbooksforfree.com/intro_to_data_com/page37.html#37
How is sodium separated from other materials found with it?
Take a container with both elements and lower the temp. to -77 degrees; the liquid that forms is nitrogen & the other remains a gas. :)
What are the steps of the engineering process?
Identifying a need, researching the background of that need, making a plan to meet the need, doing the work, evaluating the results, looking for improvements
What are the uses of semimetals?
A semiconductor is a material that has a particular property that can allow or block the flow of electrons - a property that is very useful in transistors, integrated circuits, and other electronic components (such as microprocessors).
Can you weld a cracked cast iron pot belly stove?
yes, with a cast iron rod and an oxy-fuel set up or with a nickel rod and an arc machine
Aluminium is aluminum, a recyclable metal that is lightweight, strong, and conductive. It is inexpensive and will not rust, nor will this natural resource ever run out because to some extent, the earth's crust is made of it. It can be molded into casts, worked with machine tools, and made into sheet metal, making it useful for a wide variety of products. Some interesting facts about aluminum Though it is inexpensive today, it wasn't always. Napoleon's best cutlery was made of it, and his second-best cutlery was gold. Originally named Aluminum by Sir Humphrey Davy in 1808, it is also known as aluminium. Density of aluminum is 2.7 and its melting point is 660 degrees Celsius. Aluminum is a pure element that appears on the Periodic Table. In contrast to iron, which produces an oxide that is much bigger than iron and produces rust, aluminum oxide is the same size as aluminum. Instead of forming rust, the oxide forms a protective layer.
It is a strong metallic rust proof metal.
Aluminium is a silvery white and ductile member of the boron group of chemical elements. It has the symbol Al; its atomic number is 13. It is not soluble in water under normal circumstances. Aluminium is too reactive chemically to occur in nature as the free metal. Instead, it is found combined in over 270 different minerals.
The chief source of aluminum is bauxite ore.
Aluminium is a soft, durable, lightweight, malleable metal with appearance ranging from silvery to dull grey, depending on the surface roughness. Aluminium is nonmagnetic and nonsparking. It is also insoluble in alcohol, though it can be soluble in water in certain forms. The yield strength of pure aluminum is 7-11 MPa, while aluminum alloys have yield strengths ranging from 200 MPa to 600 MPa. Aluminium has about one-third the density and stiffness of steel. It is ductile, and easily machined, cast, and extruded.
Aluminium is a good thermal and electrical conductor, by weight better than copper. Aluminium is capable of being a superconductor, with a superconducting critical temperature of 1.2 kelvin and a critical magnetic field of about 100 gauss.
However, because of its strong affinity to oxygen, it is almost never found in the elemental state; instead it is found in oxides or silicates. Feldspars, the most common group of minerals in the earth's crust, are aluminosilicates. Native aluminum metal can be found as a minor phase in low oxygen fugacity environments, such as the interiors of certain volcanoes.
Although aluminum is an extremely common and widespread element, the common aluminum minerals are not economic sources of the metal. Almost all metallic aluminum is produced from the ore bauxite. Bauxite occurs as a weathering product of low iron and silica bedrock in tropical climatic conditions.
What inventions revolutionized transportation?
Boats, trains, and carts revolutionized transportation.
How do you read an engineering scale?
Cache line is a measure of its length is divided into equal parts. With a ruler to draw lines to direct and accurate. ruler are made with different line lengths. ruler is an important tool in technical drawing.
How much pressure take in hydraulic system?
Hydraulic systems are either gravity feed systems or pressurized systems. In a gravity feed system the pressure is produced as a result of an elevated tank holding the motive fluid, returns are pumped back to the tank from a collector tank at the bottom of the system. In a pressurized system a hydraulic positive displacement pump pumps the fluid into the system pressurizing it. Relief valves will dump excess pressure back to the holding tank.
Why is genetic engineering used in the biotechnology?
Nowadays, GM food (Genetically Modified) is in practically everything. No it does not harm humans, animals or our ecosystem. it is helping it along by exterminating heretical diseases found in plants (IE: a bitter fruit) and eliminates weak or the runt plants to stop them from reproducing.
What is a a electrically nonconductive material?
any material that will not allow electricity to pass through it. rubber, plastic,
some electrically conductive materials are metals, esp. gold, water, neon gases
insulators, glass, paper :)
This is a problem of chemistry: to create new synthetic/artificial products.
Can you make a boat out of titanium?
Yes, in fact for years Russian submarines were made of titanium. It is stronger than steel and non-magnetic.
A boat made of titanium would be very strong and light also prohibitively expensive. Aluminium is much more common in marine construction.
