MCQ_Set-7_Power System Operation & Control

Power system operation and control (PSOC)

Set : 7

61. What is full form of UEHVAC ?

A) Ultra extra high voltage Alternating current
B) Undefined extra high voltage Alternating current
C) Uncontrollable extra high voltage Alternating current
D) Ultra exert high voltage Automatic current

... Answer is A)
Ultra extra high voltage Alternating current

62. The volume of conductor is......

A) Directly proportional to line voltage
B) Directly proportional to squre of transmission line voltage
C) Inversely proportional to line voltage
D) Inversely proportional to squre of transmission line voltage

... Answer is D)
Inversely proportional to squre of transmission line voltage

63. Per unit rsistance drope ..... in the EHV line.

A) Increase
B) Decrease
C) Remain constant
D) both B & C

... Answer is B)
Decrease

64. Which voltage level is not use in India ?

A) 33kV
B) 110kV
C) 155kV
D) 66kV

... Answer is C)
155kV

65. Load demand can fulfill by.....

A) increasing generation
B) decreasing loss
C) decreasing demand
D) both A & B

... Answer is C)
155kV

66. In transmission......losses are considered

A) 30%
B) 17%
C) 20%
D) 15%

... Answer is A)
30%

67. Which is not advantage of HVDC ?

A) economical transmission
B) skin effect
C) earth return
D) additional equipments

... Answer is D)
additional equipments

68. Not a Type of HVDC ?

A) mono polar
B) bi-polar
C) extra polar
D) back to back

... Answer is C)
extra polar

69. Steel poles are used upto the line voltage of ...... ?

A) 11kV
B) 33kV
C) 66kV
D) 132kV

... Answer is B)
33kV

70. Approximately shield angle is ?

A) 10 to 20 degree
B) 15 to 25 degree
C) 20 to 30 degree
D) 30 to 60 degree

... Answer is C)
20 to 30 degree

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