Air capacitor, Physics

Assignment Help:

Air dielectric capacitors are used mainly as laboratory standards of capacitance for measurement purposes. The insulating material used in these capacitances is fused silica and the whole capacitor is shielded in the metal case. They are very accurate (0.01 to 0.02%) but their size is large. The construction is parallel plate or concentric cylinder type. Plates are circular, square or triangular in shape. These metallic plates are insulated from each other and separated by air.

Specifications

Range of values                                                                     50pf to 10000pf

Tolerance                                                                     0.01 to 0.05%

Temperature coefficient                                                                     10ppm/0C

Applications: As residual inductance and resistance is low, they can be used at high radio frequencies. Also can be used a high voltage laboratory standards.

 

 


Related Discussions:- Air capacitor

Spontaneity of a chemical reaction, How could you predict the spontaneity o...

How could you predict the spontaneity of a chemical reaction, given changes in entropy and enthalpy?

Illustrate the c-scan presentation of test specimen, Illustrate the c-scan ...

Illustrate the c-scan presentation of test specimen? C-mode: The C-scan presentation gives a plan-type (2D) view of the location and size of test specimen characteristics. T

Illustrate how is nuclear fission different from fusion, Q. Illustrate how ...

Q. Illustrate how is nuclear fission different from nuclear fusion? Answer:- Nuclear fusion is taking two different atoms as well as combining them in to one atom while nu

Hysteresis loop, HYSTERESIS LOOP: A ferromagnetic material retains some...

HYSTERESIS LOOP: A ferromagnetic material retains some magnetism after the magnetising force is removed.  The BH curve (O to Q) will therefore only be followed once, on initial

Heat transfer, indicate the process of heat exchange that does not depend o...

indicate the process of heat exchange that does not depend on temperature difference between human skin and enviroment a: convection b: evaporation c: radiation d: conduction

Calculate the tangential acceleration, The airplane shown in the figure is ...

The airplane shown in the figure is to achieve "weightlessness" for a short period of time by flying along a curved path such that it's acceleration components in x direction a x

Determine the maximum downwind concentration, The Centralia power plant emi...

The Centralia power plant emits SO 2 at the rate of 150 g/s. It has an effective stack height of 50 m. Surface winds at 10 m are steady at 2.5 m/s and it is a fall afternoon. a

Lenz’s law , LENZ’S LAW   A change of flux in a closed circuit indu...

LENZ’S LAW   A change of flux in a closed circuit induces an emf and sets up a current.  The direction of this current is such that its magnetic field tends to oppose the c

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd