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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 many kinds of steam?

There are three kinds of steam 1) saturated steam, 2)super saturated steam 3) wet steam.

Jet as an application of Bernoulli's equation?

determine the equation for trajectory with ahead of 7.0m and velocity cofficient of .95

What state of matter can be used in hydraulic systems?

State? Or phase?

It would be a liquid phase.

But its state is unknown since the state of a substance includes its pressure, temperature AND phase.

Phase is a part of a state, but a state is not a phase.

What is the square foot price for fiberglass insulation?

The price per square foot of fiberglass insulation can vary from $0.25 to $0.90, depending on the thickness and R value. Four-inch thick, R-13 insulation probably averages about $0.40 per square foot (in 2009).

What is the formula to design a hexagonal nut and bolts from a hexagonal or round bar?

To design a hexagonal nut and bolt from a hexagonal or round bar, your answer depends on whether you are using English or Metric. For metric, you will use millimeters. For English, you will inches.

What are nano ic engines applications?

Nano ic engine has various applications ranging from race cars to space crafts.

In race cars this IC Nano Engine was used. The engine was fully fabricated, that is, no castings were employed.

• It can be controlled in aero planes/satellites/space ships etc., the timing of inlet and exhaust valves.

• According to NASA reports they are experimenting about the use of nano engine in nano & pico satellites.

In case of a mine tragedy where harmful gases are emitted, these nano ic engines can be employed as powerful blowers to blow out these gases is a less time saving the lives of trapped miners. We require at least 5-6 blowers to blow these gases where as two nano ic engines could do the tick in less time

• Agriculture pumps sets.

Every field of industry

What is annular space?

It is the space remaining after something has been constructed in a hole e.g. the space surrounding steel casing in a borehole.

How do you replace a rectangular aluminum bar with an equivalent aluminum rectangular tube?

I assume you're referencing the mathematical problem of "squaring the circle." Engineers use increasingly precise values of pi (more digits) to estimate the volume/area required; as the requirement for precision increases, more digits are used.

For example, if an engineer needed to replace a rectangular pipe with a cylindrical one (and maintain the same volume), he would determine how precise the new fitting had to be to maintain functionality, and then use an appropriate value for pi.

(In a very loose comparison, perhaps the value 3.14 would be used for an outdoor water system, and 3.1415927 would be used for a life-support system on the International Space Station.)

(I'm a physics undergrad at the University of Utah.)

What is engine mapping?

Engines today tends to have a lot of electronics in them. Instead of needles and throttles, there are injectors, pumps and sensors, all hooked up to an electronic brain. The brain the decides when to fire the spark plugs, how much fuel to feed ASO.

Mapping an engine means finding out and setting the values to get the engine to run as good as possible.

What is the use of drip ring in the equipment?

Drip Rings (sometimes known as Flushing Rings) are commonly used in applications where Plugging may occur or where in-situ calibration is required without removing the instrument from the process.

Why refrigeration cycle is called reverse carnot cycle?

The Carnot cycle is an idealized thermodynamic cycle that describes a perfect heat engine. In the Refrigeration system we need cooling effect.so it has to operate in opposite nature to produce the cooling effect. So we run the catnot cycle reversly in the refrigeration system. So we call the Refrigeration cycle called as REVERSED CARNOT CYCLE.

How are steam condensers classified?

Two broad types of condensers are: (i) Direct contact type condensers; where the condensate and cooling water directly mix and come out as a single stream. (ii) surface condensers; which are shell and tube type heat exchangers where the two fluids do not come in direct contact and heat released by the condensation of steam is transferred through the walls of the tubes in to the cooling water continuously circulating inside them

What is afbc boiler?

Atmospheric Fluidized Bed Combustion Boiler (AFBC boiler) is a type of operational boiler. In a AFBC boiler a little more fluidized bed combustor is added than a conventional shell boiler.

Relationship between center of pressure with the depth of immersion?

hye... pls answer these question... i want submit my assigment tomorrow..........

How do you refill DraftMatic Mechanical Pencil Yellow 0.3?

Push the eraser cap down and hold it down. This opens the mechanism so that you can drop the leads into the barrel of the pencil. When the lead is loaded, release the cap and click the lead into place.

How a engine capacities is calculted?

The engine capacity is calculated by measuring the size of a crankcase. The crankcase is the space that holds the pistons.

Why multi staging is required for air compressor?

If the pressure output of the compressor is approx. 10x greater than atmospheric pressure, the compression cannot be completed in one stage without inefficient power losses.

How thrust is produced in Boeing 747?

Four GE turbofan engines generate 56,000 pounds of thrust each. This adds to 224,000 pounds of thrust altogether.

What are the applications of Bernoulli's theorem in science?

A common example of Bernoulli's principle is the water tank with a hole is the side. This demonstration simulates that example. A cylindrical column with two holes in its side is filled with colored water. As the water flows out of the holes it falls in a parabolic trajectory as shown in the figure below.

Why is your vans radiator full of grey thick liquid?

Caused by a leaking gasket which allows oil to seep into the water cooling channels.

Why do you need gearbox in the automobile?

the need of gear box in automobile is to increase / decrease the speed while u driving the car

How do you size a flywheel?

try the suzuki part # 09930-34970 it is a 40mm female puller but i do not know the thred

What is a Crossdraft Kiln?

The kiln is a tunnel-type, cross-draft kiln, approximately 30 feet long, 6 feet wide, and 7 feet tall with side-stoke ports the length of the kiln. I fire twice a year, and firings range from 100 to 150 hours. Most of the pots are loaded through the chimney, with some loaded in through the front of the firebox,

* http://www.stuempflepottery.com/The%20Kiln.html

What should be the possible reasons of vacuum drop of turbine?

In the low pressure side of a steam turbine, the vacuum is maintained by the condensation of steam in the condenser. At high loads, the condenser may not satisify the demand, allowing steam to remain gaseous for a longer period of time. This can cause pressure to rise.