a) B-phase conductor b) Y- phase conductor c) R- phase conductor d) Earth conductor Ans: (d)
a) Power loss b) Introduction with neighbouring communication circuits c) Introducing the harmonics, predominately third harmonics, into transmission lines d) All of these Ans: (d)
a) PVC b) Glass c) Stealite d) Porcelain Ans: (d)
a) 30 kV/cm. b) 150 kV/cm. c) 100 kV /cm. d) 200 kV/cm Ans: (a)
a) Suspension type b) Pin type c) Shackle type d) None of these Ans: (a)
a) Radius of conductor b) Supply frequency c) Spacing between conductors. d) None of these Ans: (b)
a) Pine type insulators b) Suspension insulators c) Both (a) and (b) d) None of these Ans: (c)
a) Have high potential difference b) Are closely spaced c) Carry dc power d) Both (a) and (b) Ans: (d)
a) Reducing the radius of the conductors b) Reducing the spacing between conductors c) Increasing the spacing between conductors d) Increasing the radius of the conductors Ans: (d)
a) Size and charge per ion b) Number of ions c) Atmospheric temperature d) Mean free length Ans: (c)