a) Short transmission lines b) Medium length lines c) Long lines d) For any length of lines Ans: (c)
a) Large shaft diameter and higher speed b) Smaller shaft diameter and higher speed c) Large shaft diameter and smaller speed d) Smaller shaft diameter and smaller speed Ans: (d)
a) Increase of short-circuit current of the system b) Large reserve of lines in case of line trouble c) Improvement of power factor at the times of moderate and heavy loads d) All of these Ans: (c)
a) Inductance to be zero b) Capacitance to be zero c) Resistance to be infinite d) Both (a) and (b) Ans: (c)
a) 30 kV b) 50 kV c) 70 kV d) 100 kV Ans: (a)
a) The conductors are not spaced equilaterally b) The conductors are spaced equilaterally c) A telephone line runs parallel to power line d) None of these Ans: (a)
a) Strain type b) Suspension type c) Pin type d) None of these Ans: (a)
a) Oscillating voltage b) Charging current c) Line current d) Discharging current Ans: (b)
a) Suspension type b) Pin type c) Strain type d) None of these Ans: (a)
a) To give good insulation b) To avoid overloading c) To connect a circuit conductor or other device to an earth plate d) None of these Ans: (c)