Electrical Cables The disadvantage with paper as insulating material is It is hygroscopic It has high capacitance None of the listed here It is an organic material It is hygroscopic It has high capacitance None of the listed here It is an organic material ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables Cables for 220 kV lines are invariably Compressed oil or compressed gas insulated Rubber insulated Mica insulated Paper insulated Compressed oil or compressed gas insulated Rubber insulated Mica insulated Paper insulated ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables 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 One half None of the listed here Four times Double One half None of the listed here Four times ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables Solid type cables are considered unreliable beyond 66 kV because Skin effect dominates on the conductor There is a danger of breakdown of insulation due to the presence of voids Of corona loss between conductor and sheath material Insulation may melt due to higher temperature Skin effect dominates on the conductor There is a danger of breakdown of insulation due to the presence of voids Of corona loss between conductor and sheath material Insulation may melt due to higher temperature ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ? Vulcanised rubber Compressed SF6 gas Polyvinyle chloride Impregnated paper Vulcanised rubber Compressed SF6 gas Polyvinyle chloride Impregnated paper ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables Capacitance grading of cable implies Grading according to capacitance of cables per km length Use of dielectrics of different permeabilities Cables using single dielectric in different concentrations Capacitance required to be introduced at different lengths to counter the effect of inductance Grading according to capacitance of cables per km length Use of dielectrics of different permeabilities Cables using single dielectric in different concentrations Capacitance required to be introduced at different lengths to counter the effect of inductance ANSWER DOWNLOAD EXAMIANS APP
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