Electrical Cables
Underground cables are laid at sufficient depth

All of the listed here
To minimize temperature stresses
To minimize the effect of shocks and vibrations due to gassing vehicles, etc.
To avoid being unearthed easily due to removal of soil

ANSWER DOWNLOAD EXAMIANS APP

Electrical Cables
Capacitance grading of cable implies

Capacitance required to be introduced at different lengths to counter the effect of inductance
Grading according to capacitance of cables per km length
Cables using single dielectric in different concentrations
Use of dielectrics of different permeabilities

ANSWER DOWNLOAD EXAMIANS APP