Electrical Cables
The breakdown voltage of a cable depends on

All of the listed here
Time of application of the voltage
Working temperature
Presence of moisture

ANSWER DOWNLOAD EXAMIANS APP

Electrical Cables
Capacitance grading of cable implies

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

ANSWER DOWNLOAD EXAMIANS APP