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The dielectric breakdown of air at 40,000 feet (approximately 12,200 meters) is lower than that at sea level due to decreased air pressure. At sea level, the breakdown voltage of air is about 3 million volts per meter (MV/m), but at higher altitudes, the reduced air density results in a breakdown voltage of around 1 to 2 MV/m. This means that electrical discharges can occur more easily at high altitudes, affecting aircraft and other high-altitude operations.
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What is the material use in the capacitor?
Capacitors are named after their dielectrics. So, an 'air capacitor' uses air as its dielectric, a 'mica capacitor' uses mica as its dielectric, and so on. There are lots of different dielectric used to separate the plates of a capacitor, each with different permittivities and dielectric strengths. As the perfect dielectric (i.e. one with both a very high permittivity and a very high dielectric strength) doesn't occur, the choice of dielectric is always a compromise between it permittivity and dielectric strength.
Dielectric strength of air in s.t.p?
3 × 10^6 V/m
What separates terminals inside a capacitor?
Any dielectric material can be used to separate the two metal plates inside a capacitor. This includes polymer, paper, glass or even air (although air is seldom used now).
An air capacitor is a?
And air capacitor is usually a motion capacitor whereby plates mesh to form a different capacitance using air as dielectric
Which delhi engineering college will you get with air 40000 in aieee?
Dear friend you have not specified which in year you are targeting your admission .
What factors contribute to the occurrence of dielectric breakdown of air?
Dielectric breakdown of air occurs when the electric field strength exceeds the dielectric strength of air. Factors that contribute to this include high voltage levels, sharp edges or points, humidity levels, and the distance between conductors.
How does humidity affect the dielectric breakdown strength of air?
Generally, dielectric breakdown strength decreases with increasing humidity. In air, exact relationships between dielectric strength and humidity are hard to derive, due to the numerous other variables compounding the relationships (e.g. electrode size and shape, air temperature and pressure). Sources: http://www.scienceforums.net/topic/37206-dielectric-strength-of-air/ http://en.wikipedia.org/wiki/Dielectric_strength
What is the dielectric breakdown field in air?
The dielectric breakdown field in air is typically around 3 kV/mm to 6 kV/mm. This is the minimum electric field that can cause air to become conductive and allow current to flow through it.
What is Dielectric breakdown strength of air?
3KV/mm or 3X10^6 V/M
What is a twosomes challenge 40000 feet in the air?
Tevis Cup
Can a spark traverse a vacuum?
Yes, but without air to ionize they will usually be invisible. Even a vacuum has a point of dielectric breakdown.
What is the dielectric strength of air and how does it affect the performance of electrical equipment?
The dielectric strength of air is about 3 kV/mm. This means that air can withstand a certain amount of voltage before it breaks down and conducts electricity. In electrical equipment, a higher dielectric strength of air allows for higher voltages to be used without causing electrical breakdown or short circuits. This helps in ensuring the safe and efficient operation of the equipment.
Why the top of a lightning rod is made sharply pointed?
to concentrate the electric field there, making it easier to breakdown the air dielectric and discharge accumulated atmospheric electric charge.
Why is air a dielectric material?
Air is a dielectric material because it contains molecules that can be polarized when placed in an electric field, allowing it to store electric charge and exhibit insulating properties. This property of air as a dielectric material is vital in various electrical and electronic applications.
What is the material use in the capacitor?
Capacitors are named after their dielectrics. So, an 'air capacitor' uses air as its dielectric, a 'mica capacitor' uses mica as its dielectric, and so on. There are lots of different dielectric used to separate the plates of a capacitor, each with different permittivities and dielectric strengths. As the perfect dielectric (i.e. one with both a very high permittivity and a very high dielectric strength) doesn't occur, the choice of dielectric is always a compromise between it permittivity and dielectric strength.
What is an Air dielectric capacitor?
Capacitors are, in principal, two parallel plates separated by something (the dielectric). This dielectric can be many things, in fact most non-conductive things, air is just one. Warning, heavy science (way way above my level) http://en.wikipedia.org/wiki/Dielectric#Some_practical_dielectrics Photo of variable air dielectric capacitor, used to be used to tune radios for example. You can see the plates and air gap. http://en.wikipedia.org/wiki/File:Variable_Capacitor.jpg G
What happens when dielectric is a conductor?
Yes possible. As a capacitor even with air as dielectric allows alternating current to pass through the capacitor filled with some material as dielectric would allow current to pass through it
