Power System - I (3140914) MCQs

MCQs of Transmission Line Parameters

Showing 41 to 50 out of 103 Questions
2 3 4 5 6 7
41.
Non uniformity of current distribution is caused by
(a) Skin effect only
(b) Proximity effect
(c) Both (a) and (b)
(d) Neither (a) or (b)
Answer:

Option (c)

42.
Due to proximity effect, the increase in conductor resistance is not negligible in
(a) Underground cable
(b) Overhead transmission line
(c) Communication line
(d) All of above
Answer:

Option (a)

43.
For a single phase two wire line, the diameter is 1.213 cm and spacing is 1.25 m at 50 Hz. The loop inductance is
(a) 22.3×10–7 H/m
(b) 11.15×10–7 H/m
(c) 22.3×10–4 H/m
(d) 11.15×10–4 H/m
Answer:

Option (a)

44.
Presence of earth in case of overhead line
(a) Increases the capacitance
(b) Decreases the capacitance
(c) Increases the inductance
(d) Decreases the inductance
Answer:

Option (a)

45.
The term self GMD is used to calculate
(a) Capacitance
(b) Inductance
(c) Both inductance and capacitance
(d) Resistance
Answer:

Option (b)

46.
The presence of ground causes the line capacitance to
(a) Increased by 12%
(b) Decreased by 12%
(c) Increased by 0.2%
(d) None of above
Answer:

Option (c)

47.
If the spacing between two phase conductor increases, the line capacitance
(a) Decreases
(b) Increases
(c) Remains same
(d) Not affected
Answer:

Option (a)

48.
If the length of transmission line is increased, the charging current
(a) Decreases
(b) Increases
(c) Remains same
(d) Not affected
Answer:

Option (b)

49.
When AC voltage is applied to the line, the line capacitance draws
(a) Leading sinusoidal current
(b) Lagging sinusoidal current
(c) A current in phase with voltage
(d) None of above
Answer:

Option (a)

50.
Capacitance becomes increasingly more important for
(a) Short transmission line
(b) Medium transmission line
(c) Both (a) and (b)
(d) Long transmission line
Answer:

Option (d)

Showing 41 to 50 out of 103 Questions
2 3 4 5 6 7