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Mechanical Engineering

Mechanical Engineering is a branch of engineering that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines and tools. Mechanical engineering involves application of the principles of dynamics, control, thermodynamics and heat transfer, fluid mechanics, strength of materials, materials science, electronics, and mathematics.

10,989 Questions

What is the 2011 first year syllabus of Anna university?

The syllabus for the first year of courses at Anna University can be found in their course catalog. Please check the Anna University website.

How do you adjust pressure in a vav box that is dumping in to the return duct?

To adjust pressure in a VAX box that is dumping in to the return duct, measure the air coming from the AHU brought into the plenum of the air diffuser. Connect it to the outlet path formed by the bellows.?æ ?æ

Which type pump used in papermill?

assuming you mean the pump for the pulp and water or slurry, it's probably a large impeller type pump. there is typically a giant beater that shreds recycled paper and tears it back into fibers while mixing in more water then the slurry is pumped onto a felt screen that is rolling on a track then the water is squeezed out by a series of rollers until eventually it's formed a sheet strong enough to feed into a series of dry rollers . some are heated and they press and flatten and take more and more water out of the paper until it has the proper thickness and moisture content. does that answer your question?

What is the shelf life of CS welding electrode?

Not more than three years. It is subjected to the condition of electrode's appearance. If it is cracked / broken means that it did not remained good for further storage.

What are some hand tools used in the workshop and its uses?

Hand tools include such things as saws, pencil, rulers, files etc. Tools that rely on human power.

A workshop is used generally as a place of work for the manufacture and repair of various consumer goods.

Is 1.4003 grade steel and AISI 410 same?

yes its the same, only the standards are different.

What will happen if you use diesel in petrol engine?

Your car will very soon stop running. Then you will have to go to a mechanic/garage to empty the gas tank and put the right fuel in it. The same thing will happen if you put petrol in diesel engine. My co-workers did BOTH of these things on our company cars at different times by accident. Both cars worked after they emptied tanks and put the right fuel in them.
the engine wont work coz the property of diesel fuel is that,it ignites only at a high compression ratio (around 17-19:1),whereas a petrol engine has a compression ratio of 9:1(+/- 2).so less compression results in less pressure and lesser temperature.

How was American combat experience in either the Pacific theater or European theater in World War 2?

Americans were involved the most in the Pacific theater because the Japanese bombed Pearl Harbor and that put America into the war. They suffered many casualities and it brought US out of the Depression because it created many new jobs.

What engine can fit into a duratrax nitro evader st?

alot of engines will fit but o.s. engines are really good, you want to use a .18 engine, make sure it has a long enough crank shaft so the gears will mesh

Who where Charles Goodyears influences?

Goodyear influenced Thomas Hancock. Still trying to find out more scientists he influenced. Google it to find out more about Hancock.

What is the IMA of a single fixed pulley?

Nothing, really. A slight loss due to friction. If the pulley is fixed to the load, then there is a 2:1 advantage.

Will a steel cable become longer if it is heated while under load?

Even the heaviest steel cables stretch under load, whether they heat or not. Heating the cable will certainly elongate it. Friction -- caused by guides or pulleys -- can greatly increase the temperature of a cable under load. Well yeah! And, you might consider the possibility of total failure if the heat is high enough and I am not sure but the cable might act in unpredicable ways when it fails. Applying heat to a steel cable under load is probably dangerous to your health and the health of anyone nearby. Perhaps my previous answer was a little cavalier. When steel is heated steel expands. It does not need to be under load. That is the reason that in the old days before advanced electronics and optics surveyors used chains rather than cables for measuring land. Had they used cable they would have gotten different measurements in summer and winter based on the difference in temperature and the coefficient of expansionof the material.The coefficient of expansion is a number that informs just how much a given material will expand or contract for a given change in temperature. To find the coefficient of expansion and other interesting information consult a materials handbook, available in better libraries or your local college of engineering. Another example of expanding steel and the necessity for dealing with this characteristic is the overlapping slip joint found on bridges that allows horizontal structural members to expand and contract without damaging the bridge.

What is a rotating part of a machine?

Different things in a machine can rotate. In a motor, the rotor will rotate or revolve. We also find shafts, gears, pulleys, cams, flywheels and a number of other parts that spin.

What is the nominal wall thickness in a shell or head of vessels?

technically nominal wall thickness refers to pipe wall thickness (average)..if you are referring to shell/hull/fore part of a vessel, the thickness varies depending of type, size, deadweight of the vessel

What is the relation between the spring constant and the frequency?

angular frequency = square root (K/m) wher k is spring constant and m = mass

linear frequency = 1/2pi times square root (K/m)

Is jacking oil required when stopping steam turbines?

jacking oil is not required when stopping the steam turbine

How do you handle hydraulic torque wrench on fastening bolts?

When it comes to tightening bolts, there is a specific measure for bolts. You need to go through the manual. There is a spring laid in the handle as when the wrench reaches the particular limit, that could bend proportionally. Thus, the worker should stop when it reaches the particular limit.

What is a non projective engineers drawing?

A non projective engineer's drawing is done without using any instruments like triangle and scale. Such a drawing is also called a sketch or free hand drawing.

Is the windmill still used today?

The windmill are actually still used today. Though we use a more advanced and technical one. This one moves even faster when pushed by wind and still moves slowly when there is no wind. These ones are believed to only be for decoration, but that is untrue. These actually power water pipes under ground and some electricty in houses and buildings. But in houses and buildings this is only for the basic stuff. But if the electricty goes out the windmill will not keep it on. The windmill is still used , but isnt the most common form of electricty. You would mostly see them powerign small things or yes, for decoration.