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The type of capacitors used in communication transmitters are?

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The type of capacitors used in communication transmitters are?

(a) Electrolyte capacitor

(b) Variable capacitor

(c) Air capacitor

(d) Glass capacitor

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Asked question is from Types of Capacitor and Capacitance topic in portion Capacitance and Capacitors of Basic Electrical Engineering

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Correct option is (b) Variable capacitor

Explanation: Variable capacitor is used to tune all the circuits to same frequency i.e. resonance frequency so they are used in communication transmitters.

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