Mechanical Engineering

The centrifugal pump is use to transfer a larger flow rate of liquid in a low pressure stage, while the booster pump is use to transmit less volume of liquid in a high pressure stage.

yes the hemp plastic, it is up to ten times stronger

Lp turbine diaphragm breaks due to positive pressure inside the condenser because of steam expansion.

in a separately excited generator the field coils are excited from a separate source like a dc battery may be or any other small generator. They are self starting generators.

The Drop Weight Tear Test (DWTT) is a test used to determine the fracture properties of steel at certain temperatures, and also to determine the temperature at which a steel transitions from ductile to brittle fractures. The test is performed by dropping a weighted hammer on to a full-thickness standard sized (usually 12" by 3") and notched sample, causing the sample to fracture ("tear") completely through the middle. The fractured surface is then observed and measured to determine what percentage of the "torn" area is ductile fracture. Ductile fractures are desired because they mitigate how fast and far fractures travel through the steel. The temperature at which this test is performed is important because steel becomes more likely to experience brittle fracture (which is not desired) at lower temperatures.

The advantage of this test is that it can be used on full-thickness specimens, providing a more accurate demonstration of how the steel would fracture in a real application. This test is required by API standards for certain sizes and grades of steel line pipe for oil, gas, and petroleum products, to demonstrate that the pipe can experience ductile fracture at reasonably low temperatures.

Sources:

Seeing and running DWTT's first hand

ASTM E436

API 5L

API 5L3

"Don't drop the drop-weight tear test" by Dr. Andrew Cosham et al.

in 2kg we get proper venting of unsoluble gases as well as air and ultimate answer is it is easy to operate at 2kg.if we operate at much pressure it is difficult and steam venting is more

stainless steel

30,000 ksi

Source:

Cast Iron is commonly used for cooking, pans and saucers etc.

It is also used for BBQs.

It also used to be used for the construction of bridges.

Designers also use it to create furniture, particularly outdoor patio pieces.

It is also used in pipe plumbing.

Source: eHow.com

Any power plant that uses more than a single steam turbine as a prime mover. It could be a power plant, or a ship for instance. They use a compound gear train to get everything going the same way at the same time and at the same speed.

Someone has already mentioned using a magnet to determine whether it's steel or aluminum, but another way is the weight. I own one of the steel variety (shot it just this afternoon!), and it is a chunk!! You can definitely tell the difference.

In Short. Yes.

Broadly speaking, any ferrous material (containing iron-Fe) will oxidise to create an iron oxide layer (rust)

In the construction industry this is normally protected against by utilising paint systems and in marine applications by utilising cathodic protection.

Alloys such as stainless steel (which does contain Iron) can reduce corrosion to very low levels. In the case of stainless steel, the alloying metals (such as chromium) react with oxygen and water to produced a thin protective oxide film which may be only a few atoms thick and will give the material a seemingly non corroded appearance.

in otto cycle the burning of fuel is instantaneously therefore a very small voulme is required for burning of fule

time was not calculated at the right point so the poits of the graph were chaned

It is a failure caused by a load in tension; that is, a force that stretches the material. For example, if you pull a beam along its axis and stetch it until it breaks, that is a tensile failure.

Power is supplied to the governor from the engine's output shaft by a belt or chain connected to the lower belt wheel. The governor is connected to a throttle valve that regulates the flow of working fluid supplying the prime mover. As the speed of the prime mover increases, the central spindle of the governor rotates at a faster rate and the kinetic energy of the balls increases. This allows the two masses on lever arms to move outwards and upwards against gravity. If the motion goes far enough, this motion causes the lever arms to pull down on a thrust bearing, which moves a beam linkage, which reduces the aperture of a throttle valve. The rate of working-fluid entering the cylinder is thus reduced and the speed of the prime mover is controlled, preventing over-speeding.

A static load is the mechanical force applied to an object as a result of both gravity's push and the weight of the object. It can be calculated by averaging out the two numbers.

The angle between chord line and turbine axial direction ( also known as setting angle)

La norma o estándar ASTM A234 es una especificación para los accesorios para tubos de acero que incluyen materiales de carbono y acero aleado para servicios de media y alta temperatura.

La materia prima fuente de los accesorios de tubería de acero ASTM A234 WPB puede ser de tubería de acero, como ASTM A106 Gr.B y C.

You can tell if a spiral spring pitch is normal by this equation; 0.2*D < p < 0.4*D. However, you can calculate a spiral spring pitch by l = πDn, A = πd2 /4.

Non-uniform grey and black colour.

It is the direction in line with (parallel to) the axis of the part. If you have a cylindrical shaft, for example, the axial direction runs along the length thru the center of the circular ends.

Viscosity of Cast Iron Pipe = 2.09*10^5 lb s/ft^2