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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 ultimate strength of kraft paper?
I have measure the tensile strength of 132 lb Kraft paper to be about 30-40 pounds per square inch. That is the force required to pull the paper apart when holders are fixed to the surface of the paper on opposite sides.
How does the dumper on a dump truck work?
It's all pretty much hydraulic. It will either dump up with cylinders under the bed or it will push the load out the back with a plate that has cylinders behind it. The hydraulics are powered by a pump that's normally run off the pto on the transmission or driven by the crank shaft. The pto is engaged and it turns the pump. The pump sends the fluid to a valve the driver engages. the valve lets the fluid go to the cylinder that pushes the load.
What does a cnc router machine produce?
Here firstly see what material that cnc router can work on:
wood(MDF, Plywood, bamboo etc) , plastic(double color board, sandwich board, ACP, PVC, etc), acrylic, stone(marble, granite, jade etc), metal( steel, grass, gold, metal etc), foam etc.
Then we see the industries applicable:
1, woodworking industries: Three-dimensional wave plate processing, cupboard doors, wooden doors, window processing, video game cabinets and panels, computer table and Plate furniture auxiliary processing.
2, the advertising industry: Advertising signs, logo production, acrylic cutting, forming system module, a variety of materials advertising the production of decorative products.
3, die industry: A sculpture of copper, aluminum, iron and other metal molds, as well as artificial marble, sand, plastic sheeting, PVC pipe, wooden planks and other non-metallic mold.
4, other industries: A variety of large-scale relief sculpture, video carving, widely used in gift processing industry.
The above is only one part for cnc router application, hope more answers have more material processing name to list.
The cruising altitude of a commercial jet is 9,000 Meter. (29,527 Feet) But they can and do go up to 12,000 Meters (39,370 feet) 32,000 to 37,000 feet
What is an antonym of aerodynamic?
There are a few antonyms for the word aerodynamic. Some of these include inefficient, clunky, slovenly, as well as inefficacious.
What illness is caused by breathing cast iron dust?
Inhalation of cast iron dust causes deposition of iron in the lung, resulting in a condition called pneumosiderosis (also referred to as siderosis or Welder's lung) (McLaughlin, 1951; Sutherland et al., 2000; CCOHS, 2002; Khalid et al., 2009). Pneumosideros presents after chronic exposure to iron dust and symptoms include shortness of breath, coughing and development of sputum (Khalid et al., 2009).
Why railway used 25 kv system?
25kV is used with 50Hz systems, and 15kV is used with 16 2/3 Hz systems. With higher frequency the power lines have higher impedance and you need higher voltage to transfer energy.
What thread size and length pivot bolt for the alternator does a 1987 Nissan Maxima need?
it need to be three inches in forward toward the core support. 12mm bolt with fine trend in to 14 mm bolts on top of the alternator in one small 12mm bolt about two inches long bolt than spacer an throw the bracket into the alternatorand tight it up.
What are the procedures used to identify and address surplus or missing equipment or resource?
write it down
Is 84280 MPa OK for young's modulus using 2024 alloy dog bone test pieces?
That sounds a little high. Young's modulus for 2024 is about 73,100 MPa
Why does gas turbine trips on high exhaust tempr spread?
nozzle fouling, restricted cooling, component wear
Why does the tensile test curve decrease after a maximum load is obtained?
because the cross-sectional area decreases as the test progresses.
to keep the pressure constant, the weight must decrease.
(pressure is force divided by area)
When did Dr. Erhart Mettler die?
Dr. Erhart Mettler died in 2000. Dr. Mettler is most known for being an engineer and founding the company Mettler Toledo.
4 examples of a pneumatic device?
erm....
Pneumatic Drill
Pneumatic Cylinder
Pneumatic Actuator
Pneumatic Switch
Pneumatic Nailgun
Pneumatic Air gun
Pneumatic Launcher
Bit more than four, but now you can choose, hope this helps,
Why does a liquid rise in a capillary tube?
This is due to Surface Tension. The molecules/atoms of the liquid are atrracted by the particles of the solid and thus the liquid rises in the capilliary tube.
Is it okay to put a throttling valve on the inlet pipe of a pump?
No, it is not. It may cause cavitation.
It is a branch of engineering which involves Mechanical,Electronics,Instrumentation and Control Engineering. An example for Mechatronics application is the Antilock brakes used in cars where The speed of each wheel is sensed and controlled braking is implemented.
What are the preventive maintenance of steam turbine?
The preventive maintenance of steam turbine mainly entails frequent servicing of the parts. This will ensure a smooth performance of the steam turbine.
What causes the pressure in liquids and hydraulic machines?
Fluids are incompressible, relatively speaking, hence the pressure applied through the system is directly transmitted to the object which you want to lift. If you used a gas, you would waste a lot of energy compression the gas-hence the system would be inefficient.
AnswerThere's another reason. Hydraulic systems using gases instead of liquids can be very efficient indeed--witness the brakes on a big truck. They are ALL gas--specifically, air--powered, and they work very well. The compressor in a gas system doesn't enter into efficiency calculations because in a liquid system, with the exception of something like car brakes, there's a pump. And in some cases you can't use a liquid hydraulic system. On a big printing press, there are a lot of compressed-air roller lifters because no one wants a book that has hydraulic fluid spattered on the pages, and if your press springs a leak in the roller lifters that is what will happen.The biggest advantage a liquid hydraulic system has is the nearly complete lack of lag. In a fluid power (the industrial term for a hydraulic system using liquid fluids) system, the whole system is charged with fluid. When you press against the fluid at one end, or pump some more in depending on what the system is, the force is instantaneously transferred to the thing you are attempting to move. OTOH, in an air system you've got to fill the lines with air before anything moves. (This is another reason why you shouldn't cut off semis on the interstate--at 55mph the truck has no brakes for 32 feet after the driver steps on the pedal.)
Which motor is used in extra humid atmosphere?
Totally enclosed fan cooled motors are more adaptable to outdoor and high moisture areas and with a bit of caution, they will work well.
How much water pressure would you have from a gravity feed tank 10 metres high?
13.956 pounds per square inch (psi)
