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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 inventor used a steam engine to add greater power to boats?
The answer simply is James Watt♥ Thanks↑
Is civil engineering a good engineering field?
Civil Engineering is a very important area of engineering which relates to creating important civil structures required for the mankind.
What is the function of the lever?
A lever can rotate around the fixed point that is called a pivot. Levers are used to reduce the force need to do a particular task.
What is grade 316 stainless steel?
316 Stainless Steel is an Austenitic Stainless Steel made up of mainly Iron (Fe), with additives of Chromium (Cr)16-18%, Nickel (Ni)10-14%, Molybdenum (Mo) 2.0%, Carbon (C) [0.08% max], Silicon (Si) 0.75%, Phosphorous (P) 0.045%, Sulphur (S) 0.03%, Nitrogen (N) 0.1%.
It is suited for highly corrosive environments such as coastal and wet/marine applications.
it is arc angle
Why was the steam engine an improvement in powering work?
Before the steam engine, the best one could hope for machines in work was wind- or water-mills. The steam engine generated much greater power, allowing not only more reliable results, but longer distances on which that energy could be used.
What is mean by hertz pressure?
It is the pressure between not flat element. for example a rail an a wheel
What is the reason for Knock in the diesel engine?
Diesel knock is generated due to fully advanced timing and retard conditions. If the timing is retard the fuel will not be burned purely and rapid pressure will be developed and pinking noise will be generated. In a advance condition the fuel is injected in to the combusion chamber before reaching the piston tdc the burning will start suddenly otherhand the piston is being compresses the charge. The combusion should be done at maximum pressure and temperature but in this case the fuel does not burnt at that stage (actually piston wants the load at that time)the pressure is not developing instanteniously rapid pressure developed thats why the diesel knock generates. Another reason for diesel knock if diesel does not have the good cetane number knocking will be generated
THIS ANSWER HAS SUBMITTED BY LOHITHKUMAR S FROM TATA MOT0RS MANGALOREAdvantages and disadvantages of camless engine?
low power consumption, high efficiency,more output power are some of the advantages of camless engine
by SHEKAR...VCE COLLEGE,MECHANICAL ENGINEERING III YR
You have to use This Equation (delta) P=Density x gravity x height
in This case Density = Density of blood
gravity on earth's surface =9.8
height =1.7 m
What is stronger a spiral bevel gear or a straight cut bevel gear?
If both gears designed and manufactured correctly, spiralbevel gear is stronger compare to a straight bevel gear. Spiral bevel gear is also quieter. For example, in mineral processing industry, spiral bevel gears are used in rock crashers because of the higher endurance. When the tooth is spiral (helical) it becomes possible to increase the size of the gear tooth without reduction of the contact ratio. The larger tooth is stronger compare to a smaller tooth. The reason why straight bevel gears are still used is because spiral bevel gears are more expensive in design and manufacturing, thanks to use of expensive spiralbevel gear cutting machines from Gleason Works or from Klingelnberg AG. In 1990, it became possible to manufacture spiral bevel gears on universal CNC milling machines, because of the development of special spiralbevel software for 3d CAD gear tooth modeling. Today, thanks to spiralbevel software, both straight and spiral bevel gears are manufactured on CNC milling machines at the same low cost.
Camber angle is the angle between the vertical axis of wheel and the vertical axis of the car/vehicle when viewed from the front or rear.
What is the difference between engineering strain and true strain?
Without getting into all the math, the engineering strain utilizes the initial length of the specimen in the calculation, the true strain utilizes the instantaneous length of the specimen.
Getting into the math:
strain engineering = change in L / original L
true strain = ln(1+strain engineering)
Engineering strain is the change in length divided by the original length, so that a 1 inch part strained 50% or .5 in/in would become 1.5 in or if strained -50% or -.5 in/in would become .5 inches. But these two strains are not the same amount of deformation since as a material is stretched further the change in length is distributed over a longer length for positive values and over a smaller length for larger values. Consider progressing from the now 1.5 in. (50%) strained part and continuing to 100% and the .5 in. (-50%) strained part and continuing to -100%. The next change in length is distributed over 1.5 in. and .5 inches respectively despite this the equation considers this change relative to the same original length of 1 inch. True strain is the change in length divided by the instantaneous length integrated from the original length to the instantaneous length. This resolves to the equation above.
What is the COP of the reversed Carnot cycle for refrigeration?
COP will be the quocient between what you want over what you payed for that is:
QC / WC
Or for a reversible carnot cycle since WC = QH-QC
QC / (QH-QC)
or
TC / (TH - TC)
Where
TC - Temperature of the cold reservoir
TH - Temperature of the hot reservoir
WC - Work of compression
QH - Heat given to the hot reservoir
QC - Heat taken from the cold reservoir
Can PE wax replace paraffin for rigid PVC?
Paraffin wax is an external lubricant for PVC, PE WAX if it is non oxidised will give the same or better result in PVC but if it is Oxidised PE WAX then it will act as in Internal lubricant.
It is always better to use PE WAX in PVC processing as compared to paraffin wax as PE WAX is of higher melting point and a polymer by it self.
Please visit www.faith.org.in for more products which you can use in PVC processing.
Vinit Kankariya.
Faith Industries P.Ltd. ; India
What is the geometry of cutting forces in waterjet cutting?
send me an e-mail to symvoulosllc[at]gmail.com and i will send you my entire PDF library. about waterjet cutting best RG
I assume you are speaking of a college degree, right? Well if you are then I believe your question is incomplete. I believe you should be asking your self what degree you would need to do something specific. For example if you want to be a doctor, then you probably need a degree in biology or chemistry and then go to med-school. If you would like to be a computer programmer you should probably go get a computer science degree. One thing I would highly recommend is of course, get a degree in something you would enjoy doing. This degree should also be something that can contribute to society. You have to be able to bring something to the table when you go and apply for a job. If you get a degree which meets the two of these criteria then you should be able to make a descent living. I guess what I'm trying to say is use common sense. Getting a degree in something useless like Native American Pottery will probably just take up time and money with very little return on investment.
