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Why sheet steel with high silicon content is used in transformer core whereas lower silicon content sheet for rotating machine?
high permeability ,low hysterisis,increased resistivity
What is the most familiar semiconductor?
silicon and germanium
How does the permeability of soil and rocks affect the flow of groundwater?
Permeability is when water can pass through different types of soil and rocks. Therefore the permeability affects the soil and rocks because if the soil or rock is PERMEABLE then the groundwater can easily flow through it :)
How can man increase porosity and permeability in oil wells?
There is not feasible way to change the overall porosity and permeability in an oil field. However, it is possible in many cases to improve the porosity and permeability within the near wellbore region, where the change in pressure is the greatest. Injecting acid into a well, may slightlyincrease the porosity but sigmificantly improve the permeability, as it creates larger flow paths (also called worm holes) through the formation. Hydraulic fracturing will also stimulate a well, although the formation's permeability and porosity is unchanges. It makes it easier for oil to flow into the well, so its effect in the long run, is the same as if the near well bore region had higher permeability. Low permeability formations often produced by horizontal wells, which is similar to hydraulic fracturing- it is easier for the oil to flow to the well.
What is Si transistor?
A silicon transistor is a transistor made of silicon.
Why sheet steel with high silicon content is used in transformer core whereas lower silicon content sheet for rotating machine?
high permeability ,low hysterisis,increased resistivity
Why core is made up of silicon steel?
produces magnetic properties,such as small hysteresis area and permeability Hysteresis loss depends upon the material of the core
What feature of a membrane describes whether molecules can cross the membrane?
permeabiity
What is the ability of a cell membrane to allow material to pass through it called?
permeability
Does silt have high permeability?
Silt has neither high or low permeability. It has moderate permeability. :) !
Unit of relative permeability?
Relative permeability is dimensionless
What is permeability value of germanium?
16.0 is the value of permeability
What is the permeability of iron?
A stable, nonmagnetic austenitic alloy steel having extremely low magnetic permeability especially in the unannealed condition, and consisting essentially of, in percent by weight, carbon 0.35 to 0.45, manganese 14 to 16.5, phosphorus 0.05 max., sulfur 0.07 to 0.12, silicon 0.55 to 1.15, nickel 3.5 to 5.5, nitrogen 0.12 max., chromium, 0.50 max. and the balance iron and incidental impurities.
What are facts about permeability?
Changes in permeability are changes in the number of compounds that can pass through a membrane. The presence of certain chemicals or radiation can change the permeability of a membrane.
What is the permeability of coars and fine sand?
The permeability of coarse sand is 1.89mL/s and the permeability of fine sand is 0.54mL/s.
How does porosity and permeability interact?
The porosity directly correlates with the permeability because the permeability requires a certain level of porosity for a certain measure of it.
Which of the following is a measure of a materials ability to transmit fluids through interconnected pore spaces capacity competence or permeability?
permeability
