Mechanical Engineering

Gear pumps are a type of positive displacement pump that are appropriate for pumping relatively high pressures and low capacities. Advantages include the ability to handle a wide range of viscosity,

less sensitivity to cavitation (than centrifugal style pumps), relatively simple to maintain and rebuild. Disadvantages can include a limited array of materials of construction due to tight tolerances required,

high shear placed on the liquid, and the fluid must be free of abrasives. Also note that gear pumps must be controlled via the motor speed. Throttling the discharge is not an acceptable means of control .

maybe

I would use a butterfly valve to set the flow and a pitot tube to measure it. Nexus Valve makes a good one and it is price competetive as well.

it is a high pressure value

yes it is a high pressure valve but particularly it is cast P11

WC9 is cast P22.

As the pumps are used to transfer the liquid from one place to another place,not solid.

ammonium chloride is a crystalline solid.

if we make solution of ammonium chloride with the water it becomes slightly acidic,when this acidic solution passes through the carbon steel make pump,it will corrode the pump because the carbon steel is not resistant to corrosion.

also the oxide layer form is dissolved by the solution which causes the rate of corosion increases and ultimately the equipment damaged.

Elongation is the percentage of the final dimension relative to the initial dimension.

For instance;

A 1m length of metal is put under a load and is stretched to a final length of 1.5m

The elongation of this is 150% because the final length is 150% of the initial length.

mujhe b nae pata

You would use 316 as the filler, it is the more pertinent metal of the two.

Precision instruments are those instruments which measures very accurately while non precision instruments are used for normal measuring of quantity.

The phrase "Salent Pole" is used to specify a specific internal field winding configuration around the magnet of a generator.

In English, Salient means "sticking out" or "most noticeable or important". Pole refers to the North or South end of a magnet.

If you take a long rectangular magnet with a North and South Pole on each end, and you surround it with electrically conductive material like wire, and you spin the magnet, electrons will flow back and forth in the wire. This is how some generators create electricity.

You can determine if your generator is a salient pole generator by inspecting its internal components. With a salient pole generator, you would notice that the magnetic poles in the magnet are "sticking out" and when passed in proximity to the wire an electrical current is created.

For a salient pole machine, the windings are wrapped around magnets with edges or teeth that stick out.

To read up on the discovery, evolution and present day use of salient pole electricity generating technology:

http://mysite.du.edu/~jcalvert/tech/salpomo.htm

The Dinorwig Power Station in Wales utilizes Salient Pole generators to pump billions of gallons water up a mountain as well as generate electricity when letting it back down again as an electricity storage system:

http://en.wikipedia.org/wiki/Dinorwig_Power_Station

the main reason is satellites.

Calculation of crane related

The crane wheel load, usually referred to as maximum wheel load is the total load in pounds that any single crane wheel will see. The formula for determining MWL is Bridge weight / 2 + {Live load ( crane capacity + hoist weight) x 15%impact*)/ Number of wheels on a single end truck. For a top running 5-ton capacity crane, with a bridge weight of 8000 lbs. and a hoist that weights 900 lbs. with four wheels total:

8000/2+(10000+9000x1.15)/2=12925

*15% impact for hoist speeds under 30 fpm in CMAA Class C Service

KP is a skin condition that i myself have it is small bumps on the skin like goose bumps

i am 13 and i have had KP since i was born it gets better as you get older i find it improves using Aveno moisturiser and Johnson baby lotion hope this helps!

The equator, which is the imaginary line that encircles the widest point of the earth at the same distance from both the north and south pole, is a geographic definition only. As such, it cannot itself be affected by anything. Imagine putting an imaginary rubberband around an orange. If you heat up the orange, nothing is going to happen to the imaginary rubberband. However, the climate of the orange as a whole would change, therefore the climate at the position of the equator would change.

300 x 300 x 12.7 x 10= 11430,000

1000

= 11430ton x 3650 = 41,719.50

adds energy to rock

In case of hospital fire we can use FM-200,inertgas system in ICU and patient wards and CO2,DCP,Water in rest place.

concave, convex and the other one which is niether concave or convex

Printed Circuit Heat Exchangers (PCHEs) are characterised as high integrity plate type heat exchangers. They are fabricated from flat metal plates (sheets) that have fluid flow channels chemically etched into them using the same process as printed circuit hence the product name.

The etched plates are stacked and diffusion bonded together to make the core of the heat exchanger(s). PCHEs can be made of one or several cores welded together to suit the duties required. Headers and nozzles are attached to the core(s) to complete the exchanger.

PCHE are highly compact, highly robust exchangers and can achieve high thermal effectiveness of over 98% depending on the process:

- PCHE are four to six times smaller than conventional shell and tube heat exchangers of the equivalent duty.

- They have a pressure capability in excess of 600 bar (9000 psi) and can cope with extreme temperatures, ranging from cryogenic to above 900°C (1650°F).

They are well established in the upstream hydrocarbon processing, petrochemical and refining industries. They can incorporate more than two process streams into a single unit. This design feature has space and weight advantages, reducing exchanger size together with piping and valve requirements.

Additional functions can be included in the exchanger design, such as chemical reaction, mass transfer and mixing, optimising the process considerably.

The association of chemical etching and diffusion bonding processes into a single product allow the use of a wide range of materials of construction enabling the use of a wide range of clean fluids in the heat exchanger, including corrosive ones.

we can measure the resistance of the given wire using the carey foster bridge /

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As far as I am aware:

Tension, Compression, Shear, Bending, Bearing.

That is because the 885kW capacity is its cooling capacity. This is the amount of heat it can take out at the evaporator. The 225kW is the power input to the compressor. This is used to define the Coefficient of Performance of the Chiller (COP), which is 885/225

1.1~ 1.3 * Load of winches

Depend on Angel of boom in Max load

assembly line