Mechanical Engineering

A simply supported beam is just that - the most simple arrangement of the structure. The beam is supported at each end, and the load is distributed in some way along its length. There is more to the application of this than might first appear, but it's the starting point for analysis. What is the load on the beam going to be? If it's a floor joist, how much is the furniture going to weigh that is placed on it? What if someone wants to put a steel safe in the middle of the span of the beam under consideration? You get the picture. But it all stems from a beam supported at the ends and having to bear a load distributed in some way along its length. Simply-supported describes the constraints imposed on the beam by its foundations. A simply supported beam cannot have any translational displacements at its support points, but no restriction is placed on rotations at the supports. Links are provided to sites where more detailed information is available.

it works by how the pilot operates it. Engine start on the top of the head location. the pilot pulls the switch down know as engine ignition. It would start the turbofan and it would be blowing fast

That is completely wrong!! Whoever wrote the above knows nothing about Aerospace Engineering and needs to find something different to do in their lives. The Turbofan jet engine is the most commonly used engine on a commercial airliner such as a Boeing 747 or a 737. Basically an enormous fan sucks in lots of air, which is then separated into two groups: around 80% goes into the bypass duct, and stays cool, while the small amount that remains goes through the core. In the core, the air is pressurized first in the Low Level Compressor, then pressurized even more in the High Level Compressor. This extremely pressurized air is then forced through the Combustor, where fuel is injected into it and then ignited. This creates very hot air, and is forced through a series of Turbines. After this, the cool air from the bypass duct is mixed with the hot air from the core and is forced out of the Nozzle in an hourglass shape to create thrust. This is exactly how a Turbofan Engine works.

The bourdon tube is a curved oval cross-sectional tube. The tendency of a fluid under pressure to try to shape its container, the tube, into a spherical shape causes the tube to elongate, moving the dial mechanism to a position indicating the application of pressure. The greater the pressure applied the greater the movement of the tube.

Pneumatic pressure is the pressure exerted by a pressurized gas.Compressed air is commonly used for this purpose.Vehicle tires are inflated with compressed air or nitrogen.Placing a pressure gauge on the valve will read a number on the dial, say 28 or 32.Which means the pneumatic pressure exerted by the gas inside the tire is 28/32 psi.

You use it to go number 1 or number 2 (sorry but I'm not gonna write it )then you flush and it goes down to the sewer.

and if your not asking about that I'm sorry and listen to this.

It flushes and it goes down and how that happens is the part in the squarish part uses special equipment and when you pull down the handle it trigger the tubes to shoot put water and the toilet sucks it down.

1 litre through 1 degree C is 1000 calories, equal to 4200 Joules of energy. The power in watts measures how quickly that happens, so that 4200 watts would do it in 1 second, but 100 watts would take 42 seconds.

Welding is done to weld materials by operating a welding machine. Many industries such as Shipyard, Robotics will be needing welding applications. The applications include extending a rod eor pipe, joining two materials etc. My brother is doing a welding course at Weldtech Training Inc at Ontario. He is very much fond of welding. It gives someones great opportunities to work in several fields.

When you are cutting or drilling metal, it works best when the metal you are cutting or drilling with is harder than the metal you are cutting. Adding carbon to the steel makes it harder (also more brittle), and since bolt cutters are usually cutting metal, making the jaws from a high carbon steel makes them able to cut more metals than if regular steel, and it will also cut with less force/effort.

i dont know about the other states but in tamilnadu they give upto 6k to 10 as a big amount.All r cuppies(beggers)

Everything is always moving. Even when you think you're standing still, you're actually speeding through space. Your moving relative to the sun and stars- though you are at rest relative to the earth. Right now your speed relative to the sun is about 100,000 kilmeters per hour. And you're moving faster relative to the center of our galaxy.

Gotten From : "Conceptual Physical Science - Exploration" Pg 21. Chapter 2.

By: Paul G.Hewitt

John Suchocki

Leslie A. Hewitt

Think what happens when you pop a balloon filled with air then THINK what happens when you pop a water filled balloon One causes a violent reaction an the other just plops apart .

Then look up the ASME or NBBI codes and and then ask yourself why is STEAM considered HIGH PRESSURE @15 PSI or more and why is a hot water boiler considered HIGH Pressure @160 PSI or 250 DEG Temp.

Once you have a semi decent understanding of the various codes then it will come to you why professionals try to use hydrostatic testing when possible..

ALSO Note that during an "air test" as the ambient temperature rises so does the test pressure as there is something called pressure /temperature relationship. Higher temperature creates higher pressure

Whatever output force is required, you can divide it by the "mechanical advantage" to calculate the input force.

It means that the it has 18% Chromium and 10% Nickel.

Immediate and catastrophic destruction of transistors and/or diodes. While that does not ALWAYS occur, it's certainly possible.

Start with the alternator. No doubt those diodes have been destroyed if a battery has been connected with reverse polarity.

Google "tap drill sizes" and you'll get 19400 results. The formula for that calculation is searchable in Machinery's Handbook, but there are simple charts you will get in your search that can give you the answer for any size you need to know.

in the winter season materials such as rubber insulators and copper wire shrink and in the summer they expand just like wood. Therefore slack is needed on powerlines in relation to the weather so there is a little give to them. Engineers have nothing to do with the slack in the lines, it occurs naturally. In the sunlight objects expand a little due to the heat. This goes for roads, bridges, sidewalks, shingled roofs and hanging power lines. They sag more in the summer than in the winter. Engineers actually have to find ways so that they wont get slack. This expansion and contraction of any given material will actually shorten the life of it over time, and it will have to be replaced more often.

Depends on where you are. In California entry engineers make $50-60k, decent engineers with 10 yrs exp make 70k, and PHDs/experts usually don't make more than $120k. If you're in industrial salaries are $20k higher for same yrs experience usually. But if you are working on oil&gas projects in offshore areas such as northern Canada you can top $200k. If you are project manager you make $180-250k and engineer lead managing 40-100 ppl = $400k, over 200 ppl makes over $500k in Canada.

Mechanical properties of matter include elasticity, which is the ability of a material to return to its original shape after being deformed; hardness, which measures a material's resistance to being scratched or dented; and ductility, which is the ability of a material to deform without breaking. Other important mechanical properties include strength, toughness, and stiffness.

Yield strength is not a characteristic that can be calculated. It must be derived through experiment. You need to measure yield strength experimentally. Through experiment you'll measure about a hundred specimens, and then calculate the average and the standard deviation. For performing design work, subtract 2 times the standard deviation from the mean and use the resulting value for your design calculations. Yield strength is usually found in design tables and charts for a given material. Thus, if you have a given material with which you are working and wish to discover the yield strength, you're best bet is to see what the supplier or (better yet) the manufacturer has to say about it. Unless, that is, you have a well-equipped laboratory handy so you can conduct your own experiments.

the sum of all vertical forces is called shear force

The important element to add is chromium.

About 39 per cent. The Gibbs free energy for gasoline (petrol) is about 45.7 MJ/Kg, and the amount of mechanical energy obtained is about 17.6 MJ/Kg. The figures will vary a bit from one engine to another, and from one grade of fuel to another.

(from Wikipedia)