The size of the earth or ground wire is based on the______________? A. maximum fault current carrying through the ground wire B. rated current carrying capacity of the service line C. depends on the soil resistanceD. both (A) and (C)

Generally grounding is provided for A. only for the safety of the equipment B. only for the safety of the operating personnelC. both (A) and (B) D. none of the above

Factors on which soil resistance depends_______________? A. depth of the electrode B. moisture C. NaclD. all the above

The objective of earthing or grounding is_______________? A. to provide as low resistance possible to the ground B. to provide as high resistance possible to the ground C. to provide flow of positive, negative and zero sequence currents D. none…

For an EHV equipment for maintenance first it should be isolated and connected to ground because_____________? A. to provide low impedance B. to discharge the charging capacitance to ground C. protection for operating personnelD. both (B) and (C)

When the 3-phase system is not grounded and if Single Line to Ground fault occurs, the voltage of the other two healthy phases will____________? A. Increases B. Decreases C. Remains unaffected

Moisture content in the soil __________ the earth soil resistance? A. increaseB. decrease C. does not affect D. none of the above

When earth fault occurs______________? A. voltage potential at the earth mat increases due to grounding B. voltage potential at the earth mat decreases due to grounding C. voltage potential at the earth mat remains zero irrespective of fault D. none…

Ground resistance should be designed such that_____________? A. grounding resistance should be as low as possible B. grounding resistance should be as high as possible C. grounding resistance should be always zero D. none of the above

Average resistance of human body is____________? A. 500 ohmsB. 1000 ohms C. 1500 ohms D. 2000 ohms