Which of the following materials is not used for transmission and distribution of electrical power________________?

Related Mcqs:

Owing to skin effect:

A. current flows through the half cross-section of the conductor B. portion of the conductor near the surface carries more current and core of the conductor carries less current C. portion of the conductor near the surface carries less current and core of the conductor carries more cur¬rent D. any of the above E. none … Owing to skin effect:Read More...

When an alternator connected to the bus-bar is shut down the bus-bar voltage will___________?

A. fall B. rise C. remain unchanged D. none 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...

Which of the following is the demerit of a ‘constant voltage transmission system’ ?

A. Increase of short-circuit current of the system B. Availability of steady voltage at all loads at the line terminals C. Possibility of better protection for the line due to possible use of higher terminal reactants D. Improvement of power factor at times of moderate and heavy loads E. Possibility of carrying increased power for … Which of the following is the demerit of a ‘constant voltage transmission system’ ?Read More...

Which of the following is usually not the generating voltage ?

A. 6.6 kV B. 8.8 kV C. 11 kV D. 13.2 kV...