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Electrostatic and Capacitance

Electrostatic and Capacitance
A dielectric material must be

Good conductor
Semi conductor
Resistor
Insulator

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Electrostatic and Capacitance
The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value

37
45
42
54

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Electrostatic and Capacitance
Dielectric strength of a material depends on

all of the listed here
thickness
temperature
moisture content

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Electrostatic and Capacitance
Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is

0.56 x 1015 m/s2
1.6 x 1015 m/s2
1.76 x 1015 m/s2
1.5 x 1015 m/s2

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Electrostatic and Capacitance
The capacity of capacitor bank used in power factor correction is expressed in terms of

KVA
KW
KV
KVAR

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Electrostatic and Capacitance
To prevent the generation of static charges on rubber or flat leather

Surface is moistened
Talcum powder is sprayed on the surface
Conductive dressing is done
Oil compound dressing is done

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