The operating voltage of supertension cables is up to_________________?
The operating voltage of supertension cables is up to_________________?
A. 3.3 kV
B. 6.6 kV
C. 11 kV
D. 33 kV
The operating voltage of supertension cables is up to_________________?
A. 3.3 kV
B. 6.6 kV
C. 11 kV
D. 33 kV
For transmission of power over a distance of 500 km, the transmission voltage should be in the range?
A. 150 to 220 kV
B. 100 to 120 kV
C. 60 to 100 kV
D. 20 to 50 kV
A circuit is disconnected by isolators when____________?
A. line is energized
B. there is no current in the line
C. line is on full load
D. circuit breaker is not open
Which of the following methods is used for laying of underground cables ?
A. Direct laying
B. Draw-in-system
C. Solid system
D. All of the above
High voltage transmission lines use__________________?
A. suspension insulators
B. insulators
C. both A. and B.
D. none of the above
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
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