The advantage of cables over overhead transmission lines is Can be used in congested areas Can be used in high voltage circuits Easy maintenance Low cost TRUE ANSWER : ? YOUR ANSWER : ?
The electrostatic stress in underground cables is Maximum at the conductor and minimum at the sheath Minimum at the conductor and maximum at the sheath Zero at the conductor as well as on the sheath Same at the conductor and the sheath TRUE ANSWER : ? YOUR ANSWER : ?
The breakdown of insulation of the cable can be avoided economically by the use of Inter-sheaths Both Inter-sheaths and Insulating materials with different dielectric constants None of the listed here Insulating materials with different dielectric constants TRUE ANSWER : ? YOUR ANSWER : ?
Capacitance grading of cable implies Use of dielectrics of different permeabilities Capacitance required to be introduced at different lengths to counter the effect of inductance Cables using single dielectric in different concentrations Grading according to capacitance of cables per km length TRUE ANSWER : ? YOUR ANSWER : ?
Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ? Polyvinyle chloride Vulcanised rubber Impregnated paper Compressed SF6 gas TRUE ANSWER : ? YOUR ANSWER : ?
The thickness of the layer of insulation on the conductor, in cables, depends upon Power factor Reactive power Current carrying capacity Voltage TRUE ANSWER : ? YOUR ANSWER : ?
Dielectric strength of rubber is around 5 kV/mm 30 kV/mm 25 kV/mm 15 kV/mm TRUE ANSWER : ? YOUR ANSWER : ?
Copper as conductor for cables is used as Hard drawn Hardened and tempered Alloy with chromium Annealed TRUE ANSWER : ? YOUR ANSWER : ?
The insulating material for a cable should have All of the listed here High dielectric strength High mechanical strength low cost TRUE ANSWER : ? YOUR ANSWER : ?