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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
Welding post secondary education?
Available here in the U.S. , completion earns an Associates Degree ( AA ) and at some institutions an AWS certification. Small companies usually do not employ these individuals whereas large companies look for them as well as "Inhire or basic" weldors. An AA Degree puts you on the fast track to promotion and always pays more.
There are currently two ABET (Accreditation Board of Engineering Technology) accredited universities in the United States for Welding Engineering and Welding Engineering Technology. The universities are Ohio State University and Ferris State University, respectively. Both of which offer a Bachelor's of Science. Ohio State University also offers a Master's and currently a Doctorate in Welding Engineering.
If this topic is about HorsePower then BHP is just as much as HP
AnswerHorsepower, is simply an Imperial unit for measuring power; in SI, we'd use watts. 'Brake' horsepower simply indicates where it is being measured -in this case, at the output of the machine rather than at its input. Because of losses within the machine, the output power is always lower than the input power. Expressed another way, output power is the difference between the input power and any losses.
Where do you find the electronic spark timing bypass on a 1991 Pontiac trans am?
If you are looking at the distributor,there should be a plug w/just a jumper plug in it.Usually towards the passenger side of vehicle.After plug is found and disconnected,hook up timing light set your initial timing,shut vehicle off and disconnect battery.Reinstall plug,hook up battery and restart vehicle and check operation.Hope this info was helpful.
Why springback in bending depends on yield stress elastic modulus sheet thickness and bend radius?
Every bending mechanism gets governed by the simple bending equation M/I=F/y=E/R
What minerals are in a car battery?
The main mineral that is found in car batteries is lead. Water and sulfuric acid are housed inside of plates that are composed of lead oxide and lead.
Who invented steam engine to power other machines?
Many people have invented devices called "steam engines" that powered other machines. The inventor of the modern steam engine operated from the pressure of steam was James Watt. He had been asked to repair a failed Newcomen steam engine that was used to drive water pumps to keep a mine dry. The Newcomen steam engine was actually a vacuum engine operated by injecting steam at atmospheric pressure into a cylinder then condensing it to create a vacuum by spraying cold water into the cylinder. Watt recognized both the issues of alternating thermal stress and low efficiency of this design. He proposed to the mine owners instead of repairing the existing failed Newcomen steam engine with one of his own design. Since then all steam engine designers adopted variants of James Watt's steam engine.
Disadvantages of mechatronics?
- different expertise required
- more complex safety issues
- increase in component failures
- increased power requirements
- lifetimes change/vary
- real-time calculations/mathematical models
What is second critical speed of turbine?
Critical speed means where natural frequency is equal to
system frequency.
From Wikipedia:
A derrick is a lifting device composed of one mast or pole which is hinged freely at the bottom. It is controlled by lines (usually four of them) powered by some means such as man-hauling or motors, so that the pole can move in all four directions. A line runs up it and over its top with a hook on the end, like with a crane. It is commonly used in docks and on board ships. Some large derricks are mounted on dedicated vessels, and are often known as "floating derricks". Pictures:
http://images.google.se/images?um=1&hl=sv&client=firefox-a&rls=org.mozilla:sv-SE:official&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=oil+derrick&spell=1
Zerol bevel gearsare very similar to a bevel gear only exception is the teeth are curved: the ends of each tooth are coplanar with the axis, but the middle of each tooth is swept circumferentially around the gear.
Why diesel engine has more efficiency than petrol engine?
Diesel is a more combustible fuel than petrol, therefore less fuel is required to generate the same power as petrol. This also means that spark plugs aren't required, like in a petrol engine, since the diesel will ignite off engine compression alone. This also makes the engine arguably more reliable since there are less parts, and less things to go wrong.
Could you explain why connect gland steam area of HP turbine with reheat inlet line of IP TURBINE?
BECAUSE IF YOU DIDN'T TEMPERATURE AND PRESSURE DROPS WOULD ALREADY BE TOO BIG TO ALLOW 2 EXTRA STAGES OF TURBINES (IP AND LP'S). EVIDENTLY TO RE-CIRCULATE STEAM BACK TO BOILER AND ON TO IP TURBINE IS MORE COST-EFFECTIVE (I.E.: MAKES YOU GAIN MORE MONEY) THEN PERHAPS NOT BEING ABLE TO ADD ANOTHER 2 STAGES BUT ONLY ONE (I.E.: IP). THIS WAY YOU CAN MAKE SURE TO EXPLOIT ALL ENERGY OF THE STEAM FLOW. IF YOU DIDN'T REHEAT LOSSES WOULD BE GREATER THAN GAINS pleas be more clear in your answer and tll mw th benifet of the hp & lp glands
What is the mechanical advantage of a machine without friction?
Machinal advantage, also known as mechanical advantage, refers to the ratio of the force produced by a machine to the force applied to it. A machine can be useful even its machinal advantage is less than 1.
Why carburetor is necessary in petrol engine?
It's not necessary if you have fuel injection. Any gas engine which does not have fuel injection, like most small equipment engines, uses a carburetor. The carburetor releases the fuel as a mist into air being drawn into the engine. That gets fuel and oxygen into the combustion chamber in a highly combustible condition.
What to do with noisy input shaft bearing on an evo 6?
Any bearing making noise more than likely needs replacing.
Any bearing making noise more than likely needs replacing.
It is the process of drilling a locating hole at the end of a shaft while machining between centres.
The tensile strength of some thing is it's ability to withstand pulling. For instance, the polymers of Kevlar are tightly bound therefore it has a high tensile strength because it does not easily pull apart.
What is the difference between Full-penetration butt welds and filet butt weld?
tell me full penetration joint process
What is definition of thermal efficiency of gas engine?
In general, efficiency is the ratio between the output of a device and the input, . For thermal efficiency, the input, , to the device is heat, or the heat-content of a fuel that is consumed. The desired output is mechanical work, , or heat, , or possibly both.
From the first law of thermodynamics, the energy output can't exceed the input, so
What is meant by degree of subcooling?
The degrees (temperature) from the saturated liquid line. One example would be after refrigerant goes through a condenser.
T_subcooling = T_sat - T_condenser
It first takes the upper portion, and separates the surrounding leaves and leaves only the white, cotton part.
