a) Single phase system b) 2 phase 3 wire system c) 3 phase 3 wire system d) 3 phase 4 wire system Ans: (c)
a) 400 b) 400√2 c) 825 d) 1155 Ans: (d)
a) Insulating material with different dielectric b) Intersheath c) Both (a) and (b) above d) None of these Ans: (c)
a) 0Ω b) 75Ω c) 150Ω d) 300Ω Ans: (b)
a) Radial main b) Ring main c) Parabolic main d) Balancing main Ans: (b)
a) It is lighter b) It is more economical c) It has higher current carrying capacity d) It can stand higher surge voltages Ans: (b)
a) √2 ac component b) 1.8 ×√2 ac component c) √3 ×√2 ac component d) 2 ×√2 ac component Ans: (b)
a) Reduce radio interference b) Reduce reactance c) Both (a) and (b) d) None of these Ans: (b)
a) Decreases b) Increases c) Remains same d) Uncertain Ans: (b)
a) Shunting effects are neglected b) Shunting effects are included c) May include or neglect d) None of these Ans: (a)