Power System - II (3150911) MCQs

MCQs of Basic Principles

Showing 81 to 90 out of 135 Questions
6 7 8 9 10 11
81.
In order to reduce the inductive interference in parallel communication circuit to the minimum
(a) Conductors are transposed at regular intervals
(b) Bundled conductors are used
(c) Thick  conductors are used
(d) Either (a) or (b)
Answer:

Option (d)

82.
When there is interference in an overhead communication line running parallel and in close proximity to an overhead power line in the longitudinal and lateral directions by the power line are due to
(a) Magnetic induction and electric induction respectively
(b) Electric induction and magnetic induction respectively
(c) Both magnetic and electric induction
(d) Magnetic induction only
Answer:

Option (c)

83.
Extra high voltage transmission means
(a) Voltage less than 400 kV
(b) Voltage  in a range of 400 kV to 750 kV
(c) Voltage greater than 750 kV
(d) Any of above
Answer:

Option (b)

84.
Surge impedance of transmission line is
(a) Independent of length
(b) Dependent on length
(c) Dependent on temperature
(d) Independent of temperature
Answer:

Option (a)

85.
By using bundled conductor, the critical voltage for formation of corona will
(a) Increase
(b) Decrease
(c) Remain same
(d) Unpredictable
Answer:

Option (a)

86.
Use of bundled conductor reduces
(a) Power loss due to corona
(b) Surge impedance
(c) Radio interference
(d) All of above
Answer:

Option (d)

87.
The conductors are bundled primarily to
(a) Reduce corona
(b) Reduce radio interference
(c) Reduce line reactance
(d) Both (a) and  (b)
Answer:

Option (d)

88.
Bundle conductor in a transmission line
(a) Increases radio interference
(b) Decreases radio interference
(c) Does not affect radio interference
(d) Insufficient data
Answer:

Option (b)

89.
With bundled conductors
(a) Corona inception voltage increases
(b) Corona inception voltage decreases
(c) Corona inception voltage remains unaffected
(d) None of above
Answer:

Option (a)

90.
Bundled conductors are mainly used
(a) To increase shunt capacitance
(b) To decrease shunt capacitance
(c) To increase series reactance
(d) To decrease series reactance
Answer:

Option (d)

Showing 81 to 90 out of 135 Questions
6 7 8 9 10 11