Mechanical Engineering

arm, leg, hammer, scissors, wheelbarrow, prybar

The last aim of a mechanical engineer is that the customer satisfaction and the efficient work

Industrial lubricants.

From 43,000 to over 90,000, depending on the dept of sonography and location of employment...

anywhere from $44,000 to $100,000 depending on the type of sonography

Like everything else, it's worth whatever someone is willing to pay for it.

In excellent condition with lots of 'tooling' like chucks, rests, attachments, extra parts, etc. a nice clean Wards lathe might be worth $1000 or more.

A rusty, dirty, neglected or abused old example with no extras and in poor condition?

Maybe a hundred bucks......maybe less.

hth, Steve

more brittle

There is absolutely no limit. The average salary of a doctor can range from $150,000 for a general doctor, $163,000 for a psychiatrist and $255,000 for a general surgeon. Regular doctors are not likely to earn more than this, but entrepreneurs can earn millions. This means doctors who, for example, instead of treating patients, invent a new drug or invent something that can be used by other doctors. But only a very small number of doctors do this. Here is a good article about the salary of normal doctors: http://hypertextbook.com/facts/2004/TiffanyYam.shtml -DJ Craig

calorifier contains the number of coils through which steam flows.

Steam from steam boiler goes to kitchen,laundry and for calorifier.Around these steam coils,water is flowing which needs to be heated. as u know temp of steam would be more than 100 deg,it heats the water which comes in contact with these coils .

in most of the calorifiers,a set point mechanism is fitted which cuts the flow of steam whenrequired temp of water has attained

A factor of safety against yield is applied to design stress

Yield Stress/ Design Stress = Factor of safety

The factor of safety varies for different industries; 1.5 is used in structural steel design for buildings; 1.25 or even 1.1 for aircraft/space systems

Some stainless steel is non magnetic, like the 300 series which contains a good bit of nickel which makes this series non-magnetic, but the 400 series does not have nickel and are thus magnetic, so you cannot differentiate between this series of stainless and regular carbon steel using a magnet. If the sample in question rusts easily, then it's probably regular carbon steel, though there are some high carbon steels like D2 tool steel for example, which have a high enough percentage of chromium (D2 has 11% to 13% generally) which make them 'almost' stainless and thus they don't rust as easily as a high carbon steel like O1, which does not have enough chromium (.50%) too inhibit oxidation and thus it rusts quite easily. The only other means to tell whether you have stainless steel or regular carbon steel would be by performing a spark test which could tell you whether you have stainless or regular carbon steel or sending a sample out for metallurgical analysis.

automobile

automobile

what about electronics & telecommunication?

I my opinion electrical is best!

There are 4 they are Low Carbon steel, Medium Carbon Steel, High Carbon Steel and Eutectiod

Hydraulic Mean Radius = Cross sectional area of conduit divided by the inside (wetted) perimeter.

Gate valve is basically created for an on-off service, it is designed to control the pressure drop and allow the passage of a pipe-cleaning pig. Gate valve can be also called as knife valve or slide valve.

you take pipes from the fire to the chest and melt ice over it the cold water will keep it cooled down dawg. Fo Sheezy. you take pipes from the fire to the chest and melt ice over it the cold water will keep it cooled down dawg. Fo Sheezy.

bRO , FIRSTLY , IF YOU LIKE DESIGN ENGINEERING THEN YOU CAN YOURSELF CRAVE OUT IT'S SCOPE. IT WOULD BE A LOT BIGGER DETAILED MESS , IF I STARTED HERE ABOUT IT'S SCOPE AREAS. BUT TO CUT IT SHORT , I WOULD SAY THAT, THE SHAPE OF THE WORLD AS YOU SEE IT IS OWNED TO THE DESIGN ENGINEERING. IT CHANGES THE WAY YOU LOOK AT THINGS , SO IF YOU THINK YOU HAVE COUPLE OF AWESOME IDEAS TO CHANGE THINGS AROUND YOU. BELIEVE ME, YOU WILL CREATE SCOPE YOURSELF, WITHOUT LOOKING OR EXPECTING FROM MARKET TREND. nEVER RELY ON , WHAT'S OUTSIDE , ALWAYS LOOK WHAT YOU CAN PUT FORWARD,

AMITIES.

gears moving becase there connected to the crankshaft that is spinning

UPVC stands for Unplasticized Polyvinyl Chloride. It's a type of rigid and chemically resistant plastic used extensively in the construction of pipe installations and other infrastructural applications due to its durability, low cost, and resistance to water corrosion.

== == I really wonder how concrete pumps work, liquid (fluid) concrete has a big viscosity, how the pump overcome this big viscosity. I witnessed many times every couple seconds maybe 4-5 seconds the machine emits a loud thump. I think that sound come from pnomatic part of the machine. If anyone know how is it working, I will be glad to hear it, I wish Merry Christmas to all.

There are many different kinds of landing gear that can be categorized by their geometry and their internal design. There are fixed landing gears that do not retract. These are usually a support that is made of spring steel that has a axle for a wheel. This example is found on small Cessna aircraft. Other fixed landing gear that are attached at a pin joint and have a shock strut to absorb landing loads. Helicopters are good examples as many have a fixed landing gear. The simplest landing gear shock strut is designed to stroke and absorb energy and it has an axle for either 1 or 2 wheels. These usually rotate on a trunnion at the top of the gear to allow retraction by pivoting of the entire gear. A drag brace locks it down into position. Larger gear have a bogie beam or pivot beam that have multiple wheels, either 4 or 6. The bogie beam attaches to the shock strut and is allowed to pivot during landing and taxi. It will have an actuator or locking mechanism to hold the bogie beam in proper position to allow it to retract in to the wheel well. Internal Design The simplest design is the lower half of the strut(called the Piston) is designed to stroke into the upper half (Outer Cylinder). As it does, the piston forces the fluid through an narrow opening (orifice) that restricts the movement and allows the gear to absorb energy. Many Nose landing gears are of this simple design. Other gear designs will allow the Piston to stroke to a point where it contacts a 2nd Stage. This 2nd stage will have higher pressure or an enclosed volume of air that acts as a final cushion to stop the gear. Some gears have a 2nd Chamber at the top of the gear that has its own piston and orifice. As the Piston strokes, the internal pressures build up and push against the 2nd Stage and it begins to stroke and also resist the forces. This example is found in the DC10 or MD11 Main landing gear.

cvt

It works as the principle according to Newton's second law of motion