Large industrial consumers are supplied electrical energy at__________________?

Related Mcqs:

1. 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

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

   A. Copper
   B. Aluminium
   C. Steel
   D. Tungsten

3. The voltage of the single phase supply to residential consumers is_____________?

   A. 110 V
   B. 210 V
   C. 230 V
   D. 400 V

4. The power factor of industrial loads is generally______________?

   A. unity
   B. lagging
   C. leading
   D. zero

5. When the interconnector between two stations has large reactance?

   A. the transfer of power will take place with voltage fluctuation and noise
   B. the transfer of power will take place with least loss
   C. the stations will fall out of step be¬cause of large angular displacement between the stations
   D. none of the above

6. 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

7. The current drawn by the line due to corona losses is___________?

   A. non-sinusoidal
   B. sinusoidal
   C. triangular
   D. square

8. For aluminium, as compared to copper, all the following factors have higher values except:

   A. specific volume
   B. electrical conductivity
   C. co-efficient of linear expansion
   D. resistance per unit length for same cross-section

9. 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

10. The material commonly used for sheaths of underground cables is______________?

    A. lead
    B. rubber
    C. copper
    D. iron