a) Diameter b) Spacing c) Both (a) and (b) d) None of these Ans: (c)
a) Zero b) Infinite c) Surge impedance of the transmission line connected to it d) All of these Ans: (a)
a) Increases the wire diameter b) Decreases the wire diameter c) Using insulated wire d) None of these Ans: (b)
a) Provided more mechanical strength to the line b) Provide a return path for all zero sequence currents c) Work as lightening conductor d) All of these Ans: (d)
a) Attenuates b) Amplifies c) Has no effect d) None of these Ans: (a)
a) Pin type insulator b) Suspension type insulator c) Strain type insulator d) Any of these Ans: (b)
a) Suspension type b) Pin type c) Strain type d) All of these Ans: (a)
a) The pole b) Each other c) Both (a) and (b) d) None of these Ans: (c)
a) Electrical stresses b) Mechanical stresses c) Both (a) and (b) d) None of these Ans: (c)
a) Near the conductor b) Near the cross arm c) In the middle of string d) Are experiences equal stress Ans: (a)