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Usually.
A2: Not, not usually. Something with high thermal efficiency usually has "pockets" of gas in it, say, closed-cell polyurethane foam. The total dielectric strength, therefore, is not much better than using the same volume of gas or air used to blow it.
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How do engineering mechanics relates to electrical engineering?
It really depends on what sub-discipline you choose to go into. For certain topics in EE, like microelectronics, or communications, there won't be a whole lot of correlation. For something like Power Systems, or Controls, you might see a little more. For example, in controls, you may need to make an electronic control system for a mechanical device. In power systems, a good working background in mechanics may help if you get into the generation side.
Where can one purchase hydraulic equipment?
First you should check with local manufacturing plant. It may be they are looking to sell one. Another good place to look is in a metal fabrication plant. There are also several magazines and websites that are involved in the metal fabrication industry. You can also order one from Harbor Freight Tools or Northern Tools.
What are some good Mech names?
The terminator
What is all about geomatic engineering?
compered with geomatic and surveying,who is good
What is a good mech on mech quest?
ultimate skull crusher
What kinds of materials make good insulators?
There are a number of materials that make good thermal insulators. Blankets and pockets of air make good thermal insulators for example.
What is in an example of a good insulator?
A material or an object that does not easily allow heat, electricity, light, or sound to pass through it. Air, cloth and rubber are good electrical insulators; feathers and wool make good thermal insulators.
How good insulator?
There are several types of insulators: thermal, electric,, sound insulators and other. I assume you are talking about electrical insulators. The electrical resistance per unit area of a wire and unit length is called specific resistance or resistivity r and it is obtained by the wire resistance R as r=R A / L where A is the wire area and L is the wire length. It is the resistivity that qualify a material as a good electrical insulator. Perhaps the best insulator among common materials is fused quartz whose resistivity is about 1016 Ohm m (that is one with 16 zeros after it !!). Also glass is a very good insulator, pure glass (that is pure amorphous SiO2 without any metal addition) has a resistivity of about 1014 Ohm m. Just for an additional reference, gold that is a very good electrical conductor has a resistivity of 2.35 10-8 Ohm m, that is 0,00000000235 !) It is to be observed that, due to the mechanism underlying electrical and thermal conductivity, solid materials that are good electrical insulators are generally also good thermal insulators (but few exceptions do exist).
Are good thermal insulators good electrical insulators too?
no A2: Not necessarily. Solid plastics or solid glass or ceramic have high dielectric strength but not good thermal insulation. Closed-cell foam has good thermal insulating properties but not as good a dielectric strength as solid--there are pockets of gas or air in it. The D.S. is not much better than using the same volume of gas, alone.
Should the ceramic tiles on a shuttle be good thermal conductors?
No. They should be good thermal insulators.
Can you name all the good thermal insulators?
yes
Why are plastic good electricity insulators?
Plastics are a good electrical insulators because they are insulators. Electricity could not pass through them unlike copper. Another good example of insulators is rubber.
One material that is used as a conductor and one that is used as an insulator?
A good insulator material is rubber and can block heat and electricity from almost anything. Glass is a good insulator too if you are trying to insulate electricity. Plastic is good as well. Most metals are OK conductors. Copper is very good, and Gold is the best, but it is heavy and expensive.
Which appliance uses good electrical conductors and insulators?
Wired
What are good thermal insulators in buildings?
Ionic compounds are good thermal insulators. Magnesium carbonate, an ionic compound, is sometimes used. Ionic compounds have extremely high melting points and therefore, if they were heated they would not melt.
What substances are the best insulators?
Usually nonmetals. Rubber, plastic, wood, cloth, paper, Styrofoam, tinfoil (to reflect the heat.)The most common insulator for electricity is plastic.
What materials do not transfer heat easily?
An insulator is a material that does not allow a transfer of electricity or heat energy. Materials that are poor thermal conductors can also be described as being good thermal insulators. Feather, fur, and natural fibers are all examples of natural insulators
