Power System - I (3140914) MCQs

MCQs of Mechanical Features and Design of Overhead Transmission Line

Showing 1 to 10 out of 108 Questions
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1.
For high voltage transmission line, conductors are suspended from towers so as to
(a) Increase the clearance from ground
(b) Reduce the clearance form ground
(c) Take care of increased length
(d) Reduce wind and snow effect
Answer:

Option (a)

2.
The supports used for transmission lines should have
(a) High mechanical strength and longer life
(b) Good appearance
(c) Cheap in initial and maintenance cost
(d) All of above
Answer:

Option (d)

3.
Wooden poles are used as line support for
(a) 11 kV
(b) 22 kV
(c) 66 kV
(d) 400 kV
Answer:

Option (b)

4.
Maximum permissible span with wooden pole is
(a) 20 m
(b) 30 m
(c) 50 m
(d) 100 m
Answer:

Option (c)

5.
Wooden poles well impregnated with creosite oil or any preservative compound has life of
(a) 25 to 30 years
(b) 20 to 25 years
(c) 10 to 15 years
(d) 5 to 10 years
Answer:

Option (a)

6.
In order to protect the wooden poles from the action of termites, it is necessary to treat them with
(a) Lime water
(b) Creosite oil
(c) Bleaching powder
(d) Sodium hydroxide
Answer:

Option (b)

7.
Steel poles for transmission lines need protection against
(a) Borer
(b) Termites
(c) Corrosion
(d) All of above
Answer:

Option (c)

8.
Steel pole need galvanizing for longer life. Galvanizing is a process of applying a layer of
(a) Zinc
(b) Paint
(c) Varnish
(d) Tarcoal
Answer:

Option (a)

9.
RCC poles usually has the span of
(a) 250 to 400 m
(b) 100 to 150 m
(c) 50 to 100 m
(d) 25 to 50 m
Answer:

Option (b)

10.
Which support overhead transmission line has the least life?
(a) Wooden pole
(b) Fabricated steel structure
(c) RCC pole
(d) Both (b) and (c)
Answer:

Option (a)

Showing 1 to 10 out of 108 Questions
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