The thickness of metallic shielding on cables is usually 40 to 60 mm 3 to 5 mm 0.2 to 0.4 mm 0.04 mm TRUE ANSWER : ? YOUR ANSWER : ?
If the length of a cable is doubled, its capacitance Becomes double Becomes one-fourth Becomes one-half None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
A cable carrying alternating current has Hysteresis losses only Hysteresis and leakage losses only Hysteresis, leakage and copper losses only Hysteresis, leakage, copper and friction losses TRUE ANSWER : ? YOUR ANSWER : ?
In capacitance grading of cables we use a _________ dielectric. Porous Hygroscopic Homogeneous Composite TRUE ANSWER : ? YOUR ANSWER : ?
In cables the charging current Leads the voltage by 180° Lags the voltage by 180° Leads the voltage by 90° Lags the voltage by 90° TRUE ANSWER : ? YOUR ANSWER : ?
If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be 30 cm 20 cm 50 cm 100 cm TRUE ANSWER : ? YOUR ANSWER : ?
Cables for 220 kV lines are invariably Paper insulated Rubber insulated Mica insulated Compressed oil or compressed gas insulated TRUE ANSWER : ? YOUR ANSWER : ?
The disadvantage with paper as insulating material is It is hygroscopic It is an organic material It has high capacitance None of the listed here 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 : ?
In the cables, sheaths are used to Provide enough strength Provide proper insulation None of the listed here Prevent the moisture from entering the cable TRUE ANSWER : ? YOUR ANSWER : ?