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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
How does rubber soles reduce friction?
rubber has so much friction ,because it is appling static friction.
6th grade student
What kind of welding rod do you use to weld railway lines?
E7018---- I'm adding this to the answer. Never having welded rail I have seen a video of one process. It is called Thermite Welding. A mold or dam is built around the joint where rail ends meet. A mixture of Aluminum Oxide and iron powder is poured into the mold and ignited. The mixture burns at a very high temperature melting the iron powder and the ends of the rails. After cooling the slag is hammered off and the extra weld metal is ground to the shape of the rail. Google Thermite welding. A video is available.
Who should you report to in the event of problems that you can not resolve?
If you cannot solve a problem at work, you should report to your supervisor or manager.
A list of all eligable sampling units from which the sample can be drawn (eg telephone directories, electronic registers, company lists, club membership lists etc)
crash lock bottom is the way of production of carboard boxes which are gllues in such a way that when some person or machine push the sides of the glued box then the whole boxe is erected and the bottom is locked so the box is ready for use wihtout any additional gluing.
How do you apply torque on a pen if it stands vertically?
spin it. Torque is a rotational force applied to an object. It is measured on a tangent to the centerline of the rotation in force-distance from that center. ie: foot-pounds, newton-meter, etc..
What is the mathematical system used to express analyze and design digital circuits?
Boolean algebra.
What is steam injection molding?
Steam injection molding is also referred to as RHCM. Rapid Heat Cycle Molding.
In general ABS material is used as the raw material.
The primary advantage of steam injection is that it eliminates weld-lines on molded parts. This allows companies to eliminate future processes such as painting from the production process.
In non steam molding, water will heat the tool to a constant temperature (say 60 degrees). Plastic will be injected to the warm tool.
In steam molding, steam is injected at 160 degrees to heat the tool. When the tool reaches a predetermined temperature (about 140 degrees) the plastic is injected. Cold water is immediately added to the process to cool the plastic down to around 40 degrees.
Because the mold is so hot when the plastic is injected, there are no weld lines & you should end up with a 'perfect' product. Steam injection molding is now being extensively used to produce the front covers of LCD TVs.
relative velocity is defined as the time rate of change of one object with respect to another object.the relative velocity depends upon the observer i.e.if the velocities of two objects are same then the relative velocity also seems to be equal.
What do ultrasound heat treatments do?
Ultrasound heat treatments penetrate the body to provide relief to inner tissue.
Where failure will occur in cotter joint?
When the axial loads(Tensile/Compressive) will rise above the strength of specially designed socket , spigot and cotter. The failure may be of anyone component or together.
No, not necessarily. Most likely the drain has become rotten because of something acidic going into it. Vent pipes usually have a good flow of air in both directions. I would just change the bad waste pipe(s).
What is the part time BE syallabus in Anna university?
What is the part time BE syallabus in anna university?
A pillow block, also known as a plummer block or housed bearing unit, is a pedestal used to provide support for a rotating shaft with the help of compatible bearings & various accessories.
The first airplane, which was known as a flying machine, was invented by the Wright brothers in 1903. In a short period of time, the idea of the airplane became popular and many changes took place. Airplanes became used during wartime and the first commercial flight took off in 1914 in Florida.
