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Telephone companies make use of the Wheatstone bridge for _________

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Telephone companies make use of the Wheatstone bridge for _________

(a) measuring the telephone resistance

(b) computing the line strength

(c) maintaining dialtone

(d) locating the cable faults

I have been asked this question during an online exam.

This question is from Applications of Wheatstone Bridge in portion Measurement of Resistance of Electrical Measurements

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The correct choice is (d) locating the cable faults

Easy explanation: Cable faults in telephones can be located by telephone companies by making use of a Wheatstone bridge. Telephonic resistances are determined using suitable techniques. Dialtone is maintained through optical fibre technology.

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