Power System Planning and Design (2180903) MCQs

MCQs of Transmission Line Design

Showing 31 to 40 out of 85 Questions
1 2 3 4 5 6
31.
Efficiency of line increases when transmission voltage
(a) Increases
(b) Decreases
(c) Remain unchanged
(d) Data insufficient
Answer:

Option (a)

32.
Fundamental economical principle which influences the design of transmission lines is
(a) Economic choice of conductor size
(b) Economic choice of transmission voltage
(c) Economic choice of line length
(d) Both (a) and (b)
Answer:

Option (d)

33.
_____________________ states that most economical area of conductor is that when total annual cost of transmission line is minimum.
(a) Kelvin’s law
(b) Ohm’s law
(c) Lenz’s law
(d) Faraday’s law
Answer:

Option (a)

34.
ACSR conductor used as the replacement or substitute for copper due to
(a) High current carrying capacity
(b) High tensile strength
(c) Light weight
(d) Cost
Answer:

Option (d)

35.
Why of steel conductors are used in ACSR conductors?
(a) To reduce skin effect
(b) To reduced capacitance and inductance
(c) To withstand surges
(d) To get additional mechanical strength
Answer:

Option (d)

36.
What is the general ratio of the cross sectional area of the two metals used in the ACSR conductors?
(a) 1 : 4
(b) 1 : 8
(c) 2 : 1
(d) 4 : 3
Answer:

Option (a)

37.
Stringing chart is useful to
(a) Find the sag in the conductor
(b) Design insulator string
(c) Design tower
(d) Find the span
Answer:

Option (a)

38.
Hot template curves are a plot between
(a) Conductors sag and span
(b) Conductor weight and sag
(c) Temperature and humidity
(d) None of above
Answer:

Option (a)

39.
Galloping in transmission line conductors arises due to
(a) Asymmetrical layers of ice formation
(b) Vortex phenomenon in light winds
(c) Heavy weight of the line conductors
(d) Adoption of horizontal conductor configuration
Answer:

Option (a)

40.
Transmission line sag depends on
(a) Span
(b) Weight of conductors
(c) Tension on conductors
(d) All of above
Answer:

Option (d)

Showing 31 to 40 out of 85 Questions
1 2 3 4 5 6