Which of the following is the demerit of a 'constant voltage transmission system' ?
Correct answer: A. Increase of short-circuit current of the system
- A. Increase of short-circuit current of the system
- B. Availability of steady voltage at all loads at the line terminals
- C. Possibility of better protection for the line due to possible use of higher terminal reactants
- D. Improvement of power factor at times of moderate and heavy loads
- E. Possibility of carrying increased power for a given conductor size in case of long-distance heavy power transmission
Explanation
A constant-voltage transmission system requires low line impedance, which causes a larger short-circuit current when a fault occurs. The remaining statements describe advantages of this system rather than a demerit.
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