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Which of the following is used for attenuating high frequencies?

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Which of the following is used for attenuating high frequencies?

(a) shunt resistance

(b) shunt inductance

(c) series capacitance

(d) shunt capacitance

This question was addressed to me in an interview for job.

My question comes from Singletone SSB Modulation in portion SSB Modulation of Analog Communications

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Right option is (d) shunt capacitance

Explanation: Shunt capacitance is used to improve the power factor in the network. It also improves voltage stability. It serves as a low pass filter and thus is used in the communication system for attenuating high frequencies.

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