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Electrostatic and Capacitance

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

Mica
Air
Electrolytic
Paper

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Electrostatic and Capacitance
Dielectric constant for mica is nearly

200
100
3 to 8
1 to 2

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Electrostatic and Capacitance
The unit of capacitance is

Ohm
Farady
Hennry
Farady/m

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Electrostatic and Capacitance
The minimum value of potential gradient in a cable occurs in

conductor
outer sheath
uniformly all over
insulation

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Electrostatic and Capacitance
When the voltage across a capacitor is tripled, the stored charge

Triples
Stays the same
Doubles
Is cut to one-third

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Electrostatic and Capacitance
If an ohmmeter reading immediately goes practically to zero and stays there, capacitor is

Charged
Lossy
Satisfactory
Short-circuited

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MORE MCQ ON Electrostatic and Capacitance

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