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The output of a battery eliminator is closed to ________

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The output of a battery eliminator is closed to ________

(a) 70V DC

(b) 70V AC

(c) 6V AC

(d) 6V DC

This question was addressed to me in exam.

Question is taken from Hilbert Transform in portion Double Sideband Suppressed Carrier Modulation of Analog Communications

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Correct choice is (d) 6V DC

For explanation I would say: A battery eliminator is an electronic device which is powered by an external source (except battery) such that it converts the source to a particular DC voltage which can be used as power supply for other devices. Its output is approximately 6V.

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