Aluminium has a specific gravity of___________?
Aluminium has a specific gravity of___________?
A. 1.5
B. 2.7
C. 4.2
D. 7.8
Aluminium has a specific gravity of___________?
A. 1.5
B. 2.7
C. 4.2
D. 7.8
Series capacitors on transmission lines are of little use when the load VAR requirement is___________?
A. large
B. small
B. fluctuating
D. any of the above
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
A 3-phase 4 wire system is commonly used on________________?
A. primary transmission
B. secondary transmission
C. primary distribution
D. secondary distribution
The operating voltage of supertension cables is up to_________________?
A. 3.3 kV
B. 6.6 kV
C. 11 kV
D. 33 kV
The material commonly used for sheaths of underground cables is______________?
A. lead
B. rubber
C. copper
D. iron
A. underground
B. overhead
C. either of the above
D. none of the above