Objective Type Question or MCQ of Transmission and Distribution page-14
131. Which of the following system is preferred for good efficiency and high economy in distribution system?
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)
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