Q. Why the belted type cable constructions are not suitable for voltages exceeding 22 kV?
A. Development of both radial and tangential stress.
B. Formation of vacuous spaces and voids on loading and unloading owing to non homogeneity of dielectric in belted construction.
C. Local heating caused by power loss at the centre filling.
D. All of the above.
Answer: All of the above.
