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Electrostatic and Capacitance

Electrostatic and Capacitance
A paper capacitor is usually available in the form of

Rolled Foil
None of the listed here
Tubes
Disc

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Electrostatic and Capacitance
If three 15 uF capacitors are connected in series, the net capacitance is

10 uF
15 uF
20 uF
5 uF

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Electrostatic and Capacitance
Which of the following capacitor is preferred in case of single phase motor ?

Mica
Paper
Electrolytic
Air

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

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

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Electrostatic and Capacitance
Electric intensity at any point in an electric field is equal to the at that point.

electric flux
None of these
magnetic flux density
potential gradient

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Electrostatic and Capacitance
Dielectric constant for mica is nearly

3 to 8
1 to 2
200
100

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