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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

Is engineering and computer science for students who are good at math but bad at essays?

Surely no. Whatever may be the field we need good communicating skills. Incase of written exams that will be shown by the essays and description that we are going to provide.

What is small piece of semiconducting material on which integrated circuits are etched?

We don't generally "etch" integrated circuits, but, rather, we "grow" them layer by layer on a silicon substrate.

Where are ratchet mechanisms used?

Ratchet mechanisms used in Gas power plant for Gas Turbine. (like Barring gear in steam turbine).

How do you turn a television on?

You flip the on-off switch. It may be a button, or a knob.

What two buildings are taller than The World Trade Center towers?

Burj Khalifa, in Dubai, United Arab Emirates, is 2,717 feet high. It has been the highest building in the world since 2010.

Taipei 101, in Taipei, Taiwan, is 1,671 feet high.

Where can one find resources regarding engineering document management?

To find resources for managing engineering documents, look to software companies that specialize in this field. Three software companies that specialize in engineering documents are Arena, Synergis and First Trace.

Where can you obtain a driver for the wireless card of an HP Pavilion DV6000?

Links to the appropriate drivers, hosted on HP's support site, can be found in the Related links section below.

What you sthe difference between multiprocessor and multicomputer?

: multicomputer-- A computer made up of several computers. The term generally refers to an architecture in which each processor has its own memory rather than multiple processors with a shared memory. Something similar to parallel computing.

Distributed computing deals with hardware and software systems containing more than one processing element or storage element, concurrent processes, or multiple programs, running under a loosely or tightly controlled regime.

A multicomputer may be considered to be either a loosely coupled NUMA computer or a tightly coupled cluster. Multicomputers are commonly used when strong computer power is required in an environment with restricted physical space or electrical power.

Common suppliers include Mercury Computer Systems, CSPI, and SKY Computers.

Common uses include 3D medical imaging devices and mobile radar.

In distributed computing a program is split up into parts that run simultaneously on multiple computers communicating over a network. Distributed computing is a form of parallel computing, but parallel computing is most commonly used to describe program parts running simultaneously on multiple processors in the same computer. Both types of processing require dividing a program into parts that can run simultaneously, but distributed programs often must deal with heterogeneous environments, network links of varying latencies, and unpredictable failures in the network or the computers.

multiprocessor-- A multiprocessor system is simply a computer that has more than one CPU on its motherboard. If the operating system is built to take advantage of this, it can run different processes (or different threads belonging to the same process) on different CPUs.

Multiprocessing is the use of two or more central processing units (CPUs) within a single computer system. The term also refers to the ability of a system to support more than one processor and/or the ability to allocate tasks between them.[1] There are many variations on this basic theme, and the definition of multiprocessing can vary with context, mostly as a function of how CPUs are defined (multiple cores on one die, multiple chips in one package, multiple packages in one system unit, etc.).

What is a difference between symmetrical and asymmetrical broadband?

If it's like the DSL terminology, these terms refer to the upload/download speeds. Symmetrical means that the upload (sending) speed is the same as the download (receiving) speed. Asymmetrical means that the upload and download speeds are not the same. This is the most common, especially for home use. Typically the download speed is faster than the upload speed (more data is usually downloaded than uploaded). If somebody was running a website or server, they might want the opposite, because they would be sending out more than receiving.

Asymmetrical is more common, because it makes better use of the resources. For simplicity, say you decide to pay for the equivalent of a total bandwidth of 30 Mbps (megabits per second). They could either allocate the resources as 25 Mbps download and 5 Mbps upload, or 15 & 15. So depending on your needs, if you download a lot, you'd probably want the faster download speed, without having to pay for the faster upload speed, which you may not really need.

Why is a tetrahedron's dual its self?

it is so because its vertices's and faces are swapped among it only.

What is Satans ring made of?

Aluminum and four high power magnets arranged around the circle so that the poles are lined up S to S and N to N.

While this device was shown on an episode of CSI: NY, the first Satan's Ring was developed in MA for the DIA in early 2002. It was used unsuccessfully by DIA operatives around North America. It was supposedly scrapped to the shelf in 2004 as a more successful device was created and has been used by many of the alphabet agencies for various operations to supposedly protect the US and most of North America.

The new device call "tea-cup" uses a ceramic disc which incorporates 8 magnets even spaced with opposite poles aligned next to one another in order to disrupt both analog and digital frequencies used on locking devices as well as other electronic equipment.

Difference between Stress relaxation test and creep test?

Creep - increase in deformation while load is cst Relaxation - decrease in load while deformation is cst.

What is the similarities between radar and sonar?

They both bounce back waves to and from the receiver in order to locate and judge the distance of objects.

Construction and working of electronic eye as a alarm?

THEORY AND CIRCUIT DIAGRAM

Circuit Diagram of Electronic Eye

Electronic eye has much use in this electronic age. Also Known as magic eye. It can be used as an automatic guest indicator at the door, If fitted on the bottom of the door entrance. Once it is installed at the door there is no need to install a call bell. It can also be used at homes or in banks as a burglar alarm.
Fix the LDR to the wooden door or a locker to be protected in such a manner that when anybody tries to open it, a shadow falls on the LDR and the circuit gets activated and produce a pleasant sound through the buzzer.
This electronic eye circuit uses NOT gate from CMOS I.C

CD 4049. CD 4049 contains 6 independent NOT gate in one package; we have used here (a) one only. NOT gate output goes high(1) when the input pin 3 is at lower then 1/3rd level of the supply voltage. Conversely the output goes low (0) when it is above 1/3rd level. So small change in the voltage of pin-2 is enough to change the level of output (pin-3) from 1 to 0 and 0 to 1. The output has only two states high and low and can not remain in any intermediate stage. It is powered by a 9V battery for portable use. The circuit is economic in power consumption. Pin 1 is connected to the positive supply and pin 8 is grounded.
To detect the present of an object we have used LDR and a source of light. LDR is a special type of resistance whose value depends on the brightness of the light which is falling on it. It has resistance of about 1 mega ohm when in total darkness, but a resistance of only about 5k ohms when brightness illuminated. It responds to a large part of light spectrum.
We have made a potential divider circuit with LDR and 220 KΩ resistance connected in series. We know that voltage is directly proportional to conductance so more voltage we will get from this divider when LDR is getting light and low voltage in darkness. This divided voltage is given to input of NOT gate.
As soon as LDR gets dark the voltage of input not gate drops 1/3rd of the supply voltage and pin 2 gets high and LED or buzzer which is connected to the output gets activated.
Advantage of using Logic gate is that data can be easily send to other digital interface device.

one can easily fed data to computer using parallel port or for further processing .

Can a engineer afford a lamborghini?

Yes, I've seen a few engineers who could afford more expensive cars.

What is reversing key related to physics experiment?

a reversing key is used in the circuit to reverse the direction of current in the circuit.

What is a feather edge?

A term I will use when im talking about sanding is feather-edging. Say for example you have a scratch that goes down to your primer. When sanding this out, you want to sand the whole area around it as to avoid sanding a low spot in the paint where it was at. With feather edging, you want to step out all the layers of paint, primer and anything else that is there(hopefully nothing else!) A good guide to go by when feather edging is to try to sand each layer out so you can see each individual ring of primer, paint, clear, etc... You probably wont see the actual layers of paint(say the paint had 3 layers then clear) but you will want to be able to see it all. Run your hand flat across the surface to feel if its smooth, keeping it flat will make any bumps more noticeable than running a finger over it. Note, feather-edging isn't only applied to scratches, but many other things such as rock chips, its just a term used for a sanding technique.

How does a fireplace heat a room?

A fireplace heats a room by radiation. That radiation is the direct transfer of energy by electromagnetic waves.

How do you calculate Coupling constant j value?

Here is how you calculate a coupling constant J: For the simple case of a doublet, the coupling constant is the difference between two peaks. The trick is that J is measured in Hz, not ppm.

The first thing to do is convert the peaks from ppm into Hz. Suppose we have one peak at 4.260 ppm and another at 4.247 ppm. To get Hz, just multiply these values by the field strength in mHz. If we used a 500 mHz NMR machine, our peaks are at 2130 Hz and 2123.5 respectively. The J value is just the difference. In this case it is 2130 - 2123.5 = 6.5 Hz This can get more difficult if a proton is split by more than one other proton, especially if the protons are not identical.