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MCQs

Total Questions : 222 | Page 17 of 23 pages
Question 161. As a mater of economy, voltage for power transmission should be
  1.    High
  2.    None of the listed here
  3.    Low
  4.    Medium
 Discuss Question
Answer: Option A. -> High
Question 162. Solid grounding is adopted for voltages below
  1.    660 V
  2.    200 V
  3.    400 V
  4.    100 V
 Discuss Question
Answer: Option A. -> 660 V
Question 163. When the transmission voltage is increased, the line losses are
  1.    None of the listed here
  2.    Decreased
  3.    Increased
  4.    Same
 Discuss Question
Answer: Option B. -> Decreased
Question 164. In india, the transmission of electric power is done by
  1.    1 phase system
  2.    None of the listed here
  3.    3 phase 4 wire system
  4.    3 phase 3 wire system
 Discuss Question
Answer: Option D. -> 3 phase 3 wire system
Question 165. High voltages for transmission power is economically available from
  1.    Ac currents
  2.    Dc currents
  3.    None of the listed here
  4.    Carrier currents
 Discuss Question
Answer: Option A. -> Ac currents
Question 166. The surge resistance of cables is
  1.    300 ohms
  2.    200 ohms
  3.    50 ohms
  4.    20 ohms
 Discuss Question
Answer: Option C. -> 50 ohms
Question 167. Skin effect only exist in
  1.    High voltage dc overhead transmission
  2.    Cables carrying dc current
  3.    Ac transmission
  4.    Low voltage dc overhead transmission
 Discuss Question
Answer: Option C. -> Ac transmission
Question 168. The colour of the neutral of three core flexible cable is
  1.    Black
  2.    Red
  3.    Blue
  4.    Brown
 Discuss Question
Answer: Option C. -> Blue
Question 169. By using bundle conductors, the critical voltage for the formation of corona will
  1.    Increase
  2.    Remains same
  3.    Decrease
  4.    Not occur
 Discuss Question
Answer: Option A. -> Increase
Question 170. Corona is likely to occur maximum in
  1.    All of the listed here
  2.    Transmission line
  3.    Distribution line
  4.    Domestic wiring
 Discuss Question
Answer: Option B. -> Transmission line

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