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

Related Mcqs:

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

   A. 20-30 ohms
   B. 70—80 ohms
   C. 100—200 ohms
   D. 500—1000 ohms
   E. none of the above

2. In the analysis of which of the following lines shunt capacitance is neglected?

   A. Short transmission lines
   B. Medium transmission lines
   C. Long transmission lines
   D. Medium as well as long transmission lines

3. 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

4. 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

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

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

6. 310 km line is considered as_______________?

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

7. 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

8. 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

9. Which of the following equipment, for regulating the voltage in distribution feeder, will be most economical?

   A. Static condenser
   B. Synchronous condenser
   C. Tap changing transformer
   D. Booster transformer

10. The corona is considerably affected by which of the following _______________?

    A. Size of the conductor
    B. Shape of the conductor
    C. Surface condition of the conductor
    D. All of the above