Earth wire or ground wire is made of

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

D. none of the above

Moisture content in the soil _______ the earth soil resistance

A. increase

B. decrease

C. does not affect

D. none of the above

Generally grounding is provided for

A. only for the safety of the equipment

B. only for the safety of the operating personnel

C. both (A) and (B)

D. none of the above

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