For transmission of power over a distance of 500 km, the transmission voltage should be in the range?

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Which of the following characteristics should the line supports for transmission lines possess?

A. Low cost B. High mechanical strength C. Longer life D. All of the above...

In a tap changing transformer, the tappings are provided on__________?

A. primary winding B. secondary winding C. high voltage winding D. any of the above...

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...

Which of the following D.C. distribution system is the simplest and lowest in first cost ?

A. Radial system B. Ring system C. Inter-connected system D. None of the above...

As compared to a 2-wire D.C. distributor, a 3-wire distributor with same maximum voltage to earth uses only__________________?

A. 31.25 percent of copper B. 33.3 percent of copper C. 66.7 percent of copper D. 125 percent of copper...