Which of the following voltage range is used in medium transmission lines?

A. Less than 20 kV

B. More than 200 kV

C. 20 kV to 100 kV

D. 50 kV to 200 kV


Answer: C. 20 kV to 100 kV


Explanation:



Transmission lines are classified based on three criteria.

a) Length of transmission line

b) Operating voltage

c) Effect of capacitance

The table below summarizes the classification of transmission lines.

Transmission Lines

Length of transmission line

Operating voltage

Effect of capacitance

Short transmission line

(0 - 80) km

(0 - 20) kV

'C' is not considered

Medium transmission line

(80 - 200) km

(20 - 100) kV

'C' is lumped.

Long transmission line

(> 200) km

(> 100) kV

'C' is distributed



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