Power System Planning and Design (2180903) MCQs

MCQs of Transmission Line Design

Showing 81 to 85 out of 85 Questions
6 7 8 9
81.
Transposition of conductors in a transmission lines are done
(a) When the conductors are not equally spaced
(b) When the conductors are equilaterally spaced
(c) When a telephone line runs parallel to the power line
(d) None of above
Answer:

Option (a)

82.
Transmission lines are transposed to
(a) Reduce corona loss
(b) Reduce skin effect
(c) Minimize voltage drops in the lines
(d) Minimize phase voltage imbalances
Answer:

Option (d)

83.
When separation between the three phases of the transmission line is increased then
(a) Inductance will increase and capacitance will remain unchanged
(b) Inductance will increase and capacitance will decrease
(c) Inductance will decrease and capacitance will increase
(d) Inductance and capacitance will decrease
Answer:

Option (b)

84.
Ferranti effect happen on the transmission line when
(a) Line is short and loaded
(b) Line is short and unloaded
(c) Line is long and loaded
(d) Line is long and unloaded
Answer:

Option (d)

85.
Proximity effect is due to the current flowing in the
(a) Earth wire
(b) Sheath
(c) Nearby conductors
(d) All of above
Answer:

Option (c)

Showing 81 to 85 out of 85 Questions
6 7 8 9