Electrical Cables If a cable of homogeneous insulation has a maximum stress of 10 kV/mm, then the dielectric strength of insulation should be 30 kV/mm 15 kV/mm 5 kV/mm 10 kV/mm 30 kV/mm 15 kV/mm 5 kV/mm 10 kV/mm ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables The surge resistance of cable is 500 ohms 50 ohms 5 ohms 100 ohms 500 ohms 50 ohms 5 ohms 100 ohms ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables Is a cable is to be designed for use on 1000 kV, which insulation would you prefer ? Compressed SF6 gas Vulcanised rubber Impregnated paper Polyvinyle chloride Compressed SF6 gas Vulcanised rubber Impregnated paper Polyvinyle chloride 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 Skin effect dominates on the conductor Of corona loss between conductor and sheath material Insulation may melt due to higher temperature There is a danger of breakdown of insulation due to the presence of voids Skin effect dominates on the conductor Of corona loss between conductor and sheath material Insulation may melt due to higher temperature ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables The current carrying capacity of cables in D.C. is more than that in A.C. mainly due to Smaller dielectric loss Absence of harmonics Nonexistence of any stability limit None of the listed here Smaller dielectric loss Absence of harmonics Nonexistence of any stability limit None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Electrical Cables The advantage of cables over overhead transmission lines is Can be used in high voltage circuits Easy maintenance Low cost Can be used in congested areas Can be used in high voltage circuits Easy maintenance Low cost Can be used in congested areas ANSWER DOWNLOAD EXAMIANS APP
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