For an overhead line, the surge impedance is taken as________________?

Related Mcqs:

1. The square root of the ratio of line impedance and shunt admittance is called the___________?

   A. surge impedance of the line
   B. conductance of the line
   C. regulation of the line
   D. none of the above

2. Overhead system can be designed for operation up to____________?

   A. 11 kV
   B. 33 kV
   C. 66 kV
   D. 400 kV

   Updated by: The Perfectionist

3. Overhead lines generally use__________________?

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

4. Which of the following materials is used for overhead transmission lines ?

   A. Steel cored aluminium
   B. Galvanised steel
   C. Cadmium copper
   D. Any of the above

5. 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

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

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

7. 310 km line is considered as_______________?

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

8. The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the________________?

   A. Seeback effect
   B. Ferranti effect
   C. Raman effect
   D. none of the above

9. The minimum clearance between the ground and a 220 kV line is about_________________?

   A. 4.3 m
   B. 5.5 m
   C. 7.0 m
   D. 10.5 m

10. The spacing between phase conductors of a 220 kV line is approximately equal to________________?

    A. 2 m
    B. 3.5 m
    C. 6 m
    D. 8.5 m