Electrical Cables Capacitance grading of cable implies Cables using single dielectric in different concentrations Capacitance required to be introduced at different lengths to counter the effect of inductance Use of dielectrics of different permeabilities Grading according to capacitance of cables per km length Cables using single dielectric in different concentrations Capacitance required to be introduced at different lengths to counter the effect of inductance Use of dielectrics of different permeabilities Grading according to capacitance of cables per km length 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 Four times None of the listed here Double One half Four times None of the listed here Double One half ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables In cables the charging current Lags the voltage by 90° Leads the voltage by 90° Leads the voltage by 180° Lags the voltage by 180° Lags the voltage by 90° Leads the voltage by 90° Leads the voltage by 180° Lags the voltage by 180° ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables 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 Same at the conductor and the sheath Zero at the conductor as well as on the sheath Maximum at the conductor and minimum at the sheath Minimum at the conductor and maximum at the sheath Same at the conductor and the sheath Zero at the conductor as well as on the sheath ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables Solid type cables are considered unreliable beyond 66 kV because 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 Skin effect dominates on the conductor ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables The relative permittivity of rubber is Between 2 and 3 Between 8 and 9 Between 5 and 7 None of the listed here Between 2 and 3 Between 8 and 9 Between 5 and 7 None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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