a) At the receiving end b) Where the apparatus responsible for low power factor is installed c) Both (a) and (b) d) None of these Ans: (c)
a) Phase advancer b) Synchronous compensators or phase modifiers c) Static capacitors d) All of these Ans: (d)
a) Using synchronous motors instead of induction motors b) Using high-speed induction motors to low-speed machines c) Not operating induction motors at less than rated output d) All of these Ans: (d)
a) Transformer drawing more magnetizing current b) Extensive use of induction motors c) Use of arc lamps d) All of these Ans: (d)
a) Cost of station and distribution equipment is more for a given load b) Low power factor makes voltage regulation poor c) Bigger sized conductors are required for same energy transmission at low power factor d) All of these Ans: (d)
a) Flow of power from open b) Increased ambient air temperature c) Available reserve capacity margin d) Nominal transmission voltage levels Ans: (c)
a) With stability loss when the power is increased gradually b) Without stability loss when the power is increased gradually c) Both (a) and (b) d) None of these Ans: (a)
a) 2 b) 4 c) 6 d) 8 Ans: (b)
a) Discharge excess water in the reservoir b) Reduce loss of head due to friction in penstock c) Get more head for hydel plant d) Both (b) and (c) above Ans: (a)
a) Zero b) Low c) Medium d) High Ans: (d)