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Relaxation time in dielectrics is a critical parameter that characterizes how quickly a material can respond to an external electric field and return to its original state once the field is removed. It is significant because it influences the dielectric properties, such as permittivity and polarization, and affects the performance of dielectric materials in applications like capacitors and insulators. A shorter relaxation time indicates a faster response, which is essential for high-frequency applications, while longer relaxation times may lead to energy losses and decreased efficiency. Understanding relaxation time helps in designing materials for specific electrical and electronic applications.
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For an insulating material dielectric strength and dielectric loss should be respectively?
For an insulating material dielectric strength and dielectric loss should be respectively
What happens when dielectric breakdown occurs?
The dielectric,usually the insulator between the plates of a capacitor, can be overstressed by the application of too high voltages applied to the capacitor plates. The dielectric breaks down and a current flows between the plates until,either they are discharged, or an equilibrium is reached,below the working voltage of the capacitor. If the dielectric is damaged in this process he capacitor must be replaced. Some dielectric material self heal and can recover from an over voltage.
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.
Is dielectric strength the same as dielectric constant?
No, these are two unrelated properties of a material.
What is dielectric stress?
The dielectric stress is the stress placed upon a material when a voltage is placed across it.
What has the author Vera V Daniel written?
Vera V. Daniel has written: 'Dielectric relaxation' -- subject(s): Dielectric relaxation 'Electrode effects in the degradation of ceramics at high temperature' -- subject(s): Breakdown (Electricity), Ceramic materials, Electric properties, Materials at high temperatures
What has the author Alan Ernest Owen written?
Alan Ernest Owen has written: 'Electric conduction and dielectric relaxation in glass'
At what frequencies the loss highest dielectric is?
As the frequency increases the loss through heat also increases. At relaxation frequency while the dipoles will be just able to align themselves maximum loss is seen. At frequncy above relaxation frequency the dipoles will no longer able to keep up change with applied field. They become frozen.
What has the author Michael Anthony Desando written?
Michael Anthony Desando has written: 'Dielectric and nuclear magnetic resonance studies of relaxation and micellization in alkylammonium carboxylate surfactant systems'
Relation between relaxation time and mean collision time?
The relaxation time is related to the mean collision time through the expression: relaxation time = mean collision time / (1 - f), where f is the fraction of collisions that result in thermalization. The mean collision time represents the average time between particle collisions, while the relaxation time is the time it takes for a system to reach thermal equilibrium after a perturbation.
What is momentum relaxation time?
Momentum
For an insulating material dielectric strength and dielectric loss should be respectively?
For an insulating material dielectric strength and dielectric loss should be respectively
What is dielectric test in transformer?
why need dielectric test for transformer
What happens when dielectric breakdown occurs?
The dielectric,usually the insulator between the plates of a capacitor, can be overstressed by the application of too high voltages applied to the capacitor plates. The dielectric breaks down and a current flows between the plates until,either they are discharged, or an equilibrium is reached,below the working voltage of the capacitor. If the dielectric is damaged in this process he capacitor must be replaced. Some dielectric material self heal and can recover from an over voltage.
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 the sodium hypochlorite dielectric constant?
dielectric constant for sodium Hypochlorite
Why collision time and relaxation time are not equal in anisotropic medium?
average time, an electron spends between two successive collision, is called relaxation time and time spent by electron at point of contact, is called collision time
