The material generally used for armour of high voltage cables is_____________?

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Which of the following distribution systems is more reliable?

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The following system is not generally used?

A. 1-phase 3 wire B. 1-phase 4 wire C. 3-phase 3 wire D. 3-phase 4 wire...

The usual spans with R.C.C. poles are_______________?

A. 40—50 meters B. 60—100 meters C. 80—100 meters D. 300—500 meters...

The power factor of industrial loads is generally______________?

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Which of the following is not a constituent for making porcelain insulators ?

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