Answer Happy

1) The DC power transmission arrangement in which the ground is used as a return wire is the: , a) monopolar arrangement b) multi-polar arrangement c) bipolar arrangement d) two-polar arrangement 2) The differential equation that describes the propagation of the voltage wave on a lossless long transmission line is: 1 av a) av b) 02 v 1 a²v = LC @?v LC at? c) ax? at? LC Ox? VLC @t? a v a2v a v ax? Ox? Or? 3) When a voltage wave is entering a power cable from an overhead power transmission line, the steepness of voltage wave: a) remains constant b) increases c) decreases d) can increase or decrease 4) The wind pressure, on an overhead power transmission line, is directly proportional To the: a) wind speed b) square root of the wind speed c) square of the wind speed d) cube of the wind speed