Which of the following methods is used for laying of underground cables ?

Related Mcqs:

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

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

2. The operating voltage of high voltage cables is up to_______________?

   A. l.lkV
   B. 3.3kV
   C. 6.6kV
   D. llkV

3. The operating voltage of supertension cables is up to_________________?

   A. 3.3 kV
   B. 6.6 kV
   C. 11 kV
   D. 33 kV

4. The operating voltage of extra high tension cables is upto_______________?

   A. 6.6 kV
   B. 11 kV
   C. 33 kV
   D. 66 kV
   E. 132 kV

5. Multicore cables generally use________________?

   A. square conductors
   B. circular conductors
   C. rectangular conductors
   D. sector-shaped conductors
   E. none of the above

6. The material commonly used for insulation in high voltage cables is_______________?

   A. lead
   B. paper
   C. rubber
   D. none of the above

7. The material generally used for armour of high voltage cables is_____________?

   A. aluminium
   B. steel
   C. brass
   D. copper

8. The underground system cannot be operated above_________________?

   A. 440 V
   B. 11 kV
   C. 33 kV
   D. 66 kV

9. By which of the following methods string efficiency can be improved?

   A. Using a guard ring
   B. Grading the insulator
   C. Using long cross arm
   D. Any of the above
   E. None of the above

10. Besides a method of trial and error, which of the following methods is employed for solution of network problems in interconnected system ?

    A. Circulating current method
    B. Thevenin’s theorem
    C. Superposition of currents
    D. Direct application of Kirehhoffs laws
    E. All of the above