Which of the following relays is used on long transmission lines?

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In a substation the following equipment is not installed?

A. exciters B. series capacitors C. shunt reactors D. voltatre transformers...

The effect of corona can be detected by___________?

A. presence of ozone detected by odour B. hissing sound C. faint luminous glow of bluish colour D. all of the above...

If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as___________________?

A. Kelvin’s law B. Ohm’s law C. Kirchhoffs law D. Faraday’s law E. none of the above...

310 km line is considered as_______________?

A. a long line B. a medium line C. a short line D. any of the above...

Overhead lines generally use__________________?

A. copper conductors B. all aluminium conductors C. A.C.S.R. conductors D. none of these...