Electric Power Transmission and Distribution MCQ

Electrical power transmission and distribution or PT&D refers to the process of carrying electricity from the generation stations and distributing it to consumers.

Power Transmission and Distribution MCQ

Which one of the following is not an advantage of High voltage AC Power transmission:

  1. Decreases line drop
  2. Increases transmission efficiency
  3. Decreased corona
  4. Reduces conductor volume

Correct answer: 3. Decreases corona


Transmission line conductors are usually made from:

  1. Silver
  2. Copper
  3. ACSR
  4. Aluminum

Correct answer: 3. ACSR


Overhead transmission lines can be designed for:

  1. 11 kV
  2. 220 kV
  3. 400 kV
  4. All of these

Correct answer: 4. All of these


Counterpoise is buried under transmission lines when:

  1. Soil resistance is low
  2. Soild resistance is high
  3. Ground is high above sea level
  4. In Hilly areas

Correct answer: 2. Soild resistance is high


Practical transmission lines have:

  1. High sag and High tension
  2. High sag and Low tension
  3. Low sag and low tension
  4. A comprise between sag and tension

Correct answer: 4. A comprise between sag and tension

More MCQ on Power Transmission and Distribution

  1. 3-phase 4 wire system is employed for
  2. 72/7 ACSR means
  3. A 100% string efficiency indicates
  4. A transmission line spanning 240 km is classified as
  5. A 20 km long transmission line is classified as
  6. ACSR conductors have strands made of (inner/outer)
  7. An insulator breakdown by puncture
  8. Compared to HVAC transmission, the HVDC transmission is less expensive by which percentage
  9. Conductors are suspended from towers so as to
  10. Corona effect involves
  11. Currently the highest AC transmission voltage level which is in practice in the majority of the world is
  12. Decrease in sag of transmission lines impacts tension in which manner
  13. Effects of capacitance are neglected in
  14. Feeder is responsible for supplying power to
  15. Ferranti effect is referred to
  16. Ground wire in transmission lines is manufactured from which material
  17. Guy wire is used for
  18. HVDC power model can be summarized as
  19. If the conductor diameter decreases, the inductance of the line
  20. If the supply frequency increases, the skin effect will increase or Decrease
  21. In the stormy weather corona occurs at
  22. Increase in sag of transmission lines impacts tension as
  23. Increasing conductor spacing will impact corona as
  24. Low power factors in transmission lines
  25. Main drawback of underground power transmission and distribution over the Overhead system is
  26. Major advantage of underground power transmission and distribution over the Overhead system is
  27. Major factor of consideration while designing a distributor is
  28. Modeling of long transmission lines is done through
  29. Power factor of HVDC transmission lines is
  30. Rated voltage of 3 phase power system is in
  31. Sag of transmission lines in summer is
  32. Sag of transmission lines in winter is
  33. Sag of transmission lines is least affected by
  34. Sag in transmission lines depends on which factor
  35. Secondary distribution of AC is done by
  36. Series capacitors on transmission lines are little to none handy when
  37. Stringing chart is plotted between
  38. Stranded conductor has corona as compared to solid conductor [More/Less/Same]
  39. The 2nd layer of stranded conductor has total number of individual wires
  40. The correct statement about copper
  41. The longer the cross arm the efficiency
  42. The main consideration factor while designing a feeder is
  43. The surge impedance of the transmission line is mathematically expressed by formula
  44. The total number of individual wires in 1st layer of stranded conductor is
  45. Total number of individual wires in the 3rd layer of stranded conductor contains
  46. Transmission lines connect
  47. Volume of required conductor material and power factor are related as
  48. Volume of required conductor material required is
  49. Which one of the following is incorrect about DC transmission
  50. Which of the following transmission/distribution lines has a higher installation cost
  51. The transmission voltage which is not common in US grid
  52. Double Transmission line configuration for Corona
  53. The length of transmission line which will be more impacted by the Ferranti effect is
  54. The most commonly used material for insulators in transmission lines
  55. The String Efficiency of DC Systems is
  56. Surge Impedance Loading of Transmission Line is measured in
  57. Aluminum has what percent of the conductivity compared to copper
  58. Which one of the following is not a transmission voltage in the US
  59. The term Booster in Transmission lines refers to
  60. Booster Transformer Connection

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