Power System - I (3140914) MCQs

MCQs of Transmission Line Parameters

Showing 81 to 90 out of 103 Questions
6 7 8 9 10 11
81.
In HV transmission spacing between sub conductors of a bundle is approximately
(a) 20 cm
(b) 40  cm
(c) 80 cm
(d) 3.5 cm
Answer:

Option (b)

82.
For a stranded conductor the ratio of GMR to actual radius is
(a) Equal to 1
(b) More than 1
(c) Equal to 0.778
(d) Less than 0.778
Answer:

Option (d)

83.
Bundled conductors in EHV transmission system provide
(a) Reduced capacitance
(b) Increased capacitance
(c) Increased inductance
(d) Increased voltage gradient
Answer:

Option (b)

84.
Proximity effect
(a) Is more pronounced for large conductors, high frequencies and close proximity
(b) Increases the resistance of conductors and reduces self-reactance
(c) Is substantially eliminated with stranded conductors
(d) All of above
Answer:

Option (d)

85.
Following effects are associated with transmission lines
1.  Skin effect
2. Corona effect
3. Proximity effect
The effective resistance of a conductor is increased by
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
Answer:

Option (d)

86.
Capacitance of a transmission line
(a) Increases with increase in its length
(b) Decrease decreases with increase in its length
(c) Remains same with increase in its length
(d) None of above
Answer:

Option (a)

87.
Capacitance in equivalent circuit of a transmission line is due to
(a) Current in the line
(b) Difference in potential of line
(c) Leakage of current
(d) Presence of magnetic flux
Answer:

Option (b)

88.
Ratio of line to line capacitance and line to neutral capacitance is
(a) 0.5
(b) 0.25
(c) 2
(d) 4
Answer:

Option (a)

89.
If the separation between three phases of a transmission line is increased then
(a) Inductance will increase and capacitance will remain unchanged
(b) Both the inductance and capacitance will increase
(c) Inductance will increase and capacitance will decrease
(d) Inductance will decrease and capacitance will increase
Answer:

Option (c)

90.
Bundled conductors are used to
(a) Reduce inductance of the line
(b) Reduce both inductance and capacitance
(c) Reduce corona loss
(d) Reduce corona loss and line inductance
Answer:

Option (d)

Showing 81 to 90 out of 103 Questions
6 7 8 9 10 11