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Electrostatic and Capacitance

Electrostatic and Capacitance
An electrolytic capacitor can be used for

None of the listed here
AC only
DC only
Both DC and AC

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Electrostatic and Capacitance
A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is

72 x 105 V/m
82 x 105 V/m
92 x 105 V/m
62 x 105 V/m

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Electrostatic and Capacitance
Dielectric strength of mica is

30 to 50 kV/mm
50 to 200 kV/mm
10 to 20 kV/mm
300 to 500 kV/mm

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Electrostatic and Capacitance
Capacitors are mainly used for radio frequency tuning.

Air
Electrolytic
Mica
Paper

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Electrostatic and Capacitance
“The surface integral of the normal component of the electric displacement D over any closed surface equals the charge enclosed by the surface”.The above statement is associated with

Gauss’s law
Lenz’s law
Faraday’s law
Kirchhoff's law

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Electrostatic and Capacitance
Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as

coulomb
milli-coulomb
micro-coulomb
pico-coulomb

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MORE MCQ ON Electrostatic and Capacitance

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