Power System Planning and Design (2180903) MCQs

MCQs of Transmission Line Design

Showing 21 to 30 out of 85 Questions
1 2 3 4 5 6
21.
Aluminum in comparison to copper has
(a) Electrical resistivity
(b) Melting point
(c) Thermal conductivity
(d) Specific gravity
Answer:

Option (a)

22.
Why galvanized steel conductors are not preferred for long transmission?
(a) Poor conductivity
(b) High resistance of steel
(c) High power loss
(d) Both (a) and (b)
Answer:

Option (d)

23.
Ground wire is made up of
(a) Aluminum
(b) Galvanized steel
(c) Stainless steel
(d) Cast iron
Answer:

Option (b)

24.
For high voltage transmission lines, conductors suspended between towers
(a) To increase the clearance from ground
(b) To reduce clearance from ground
(c) To increase line length
(d) To reduce environmental effects
Answer:

Option (a)

25.
Distribution system uses
(a) Wooden poles
(b) RCC poles
(c) Steel poles
(d) Both (a) and (b)
Answer:

Option (d)

26.
Line support must have
(a) High mechanical strength
(b) Longer life
(c) Less weight
(d) All of above
Answer:

Option (d)

27.
To prevent rotting, wooden poles are impregnated with
(a) Kerosene oil
(b) Mineral oil
(c) Creosote oil
(d) All of above
Answer:

Option (c)

28.
Steel poles are painted to prevent
(a) Corrosion
(b) Borer
(c) Termites
(d) All of above
Answer:

Option (a)

29.
Weight of copper used for transmission line is proportional to
(a) 1/ Voltage
(b) 1/ Square of voltage
(c) Voltage
(d) Square of voltage
Answer:

Option (b)

30.
Greater the power factor, ________________ is the volume of copper required
(a) Smaller
(b) Greater
(c) Equal
(d) Data insufficient
Answer:

Option (a)

Showing 21 to 30 out of 85 Questions
1 2 3 4 5 6