The breakdown of insulation of the cable can be avoided economically by the use of Inter-sheaths None of the listed here Both Inter-sheaths and Insulating materials with different dielectric constants Insulating materials with different dielectric constants TRUE ANSWER : ? YOUR ANSWER : ?
The relative permittivity of rubber is Between 2 and 3 None of the listed here Between 8 and 9 Between 5 and 7 TRUE ANSWER : ? YOUR ANSWER : ?
The inter sheaths in the cables are used to None of the listed here Avoid the requirement of good insulation Minimize the stress Provide proper stress distribution TRUE ANSWER : ? YOUR ANSWER : ?
The advantage of cables over overhead transmission lines is Easy maintenance Low cost Can be used in high voltage circuits Can be used in congested areas TRUE ANSWER : ? YOUR ANSWER : ?
In single core cables armouring is not done to None of the listed here Either of the listed here Avoid excessive sheath losses Make it flexible TRUE ANSWER : ? YOUR ANSWER : ?
The thickness of metallic shielding on cables is usually 0.04 mm 40 to 60 mm 0.2 to 0.4 mm 3 to 5 mm TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following insulation is used in cables? Paper Rubber All of the listed here Varnished cambric TRUE ANSWER : ? YOUR ANSWER : ?
The material for armouring on cable is usually Galvanized steel wire Steel tape Both Steel tape and Galvanized steel wire None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
High tension cables are generally used up to 66 kV 11 kV 33 kV 132 kV TRUE ANSWER : ? YOUR ANSWER : ?
A certain cable has an insulation of relative permittivity 4. If the insulation is replaced by one of relative permittivity 2, the capacitance of the cable will become Double Four times One half None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?