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Electrostatic and Capacitance

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

Air
Mica
Electrolytic
Paper

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Electrostatic and Capacitance
The breakdown voltage for paper capacitors is usually

20 to 60 volts
2000 to 3000 volts
more than 10000 volts
200 to 1600 volts

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Electrostatic and Capacitance
An uncharged capacitor and a 1 kΩ resistor are connected in series with a switch and a 6 V battery. At the instant the switch is closed, the voltage across the capacitor is

6 V
3 V
2 V
0 V

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Electrostatic and Capacitance
Capacitors are used for audio frequency and radio frequency coupling and tuning

Mica
Ceramic
Air
Paper

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Electrostatic and Capacitance
Permittivity is expressed in

Farad/meter
Weber/meter
Weber/sq-m
Farad/sq-m

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

Electrolytic
Air
Mica
Paper

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