Line Supports - MCQs with answers

Line Supports - MCQs with answers

Q1. For high voltage transmission lines, why are conductors suspended from towers?

a. Increase the clearance from ground.
b. Reduce clearance from ground.
c. Take care of increase in length.
d. Reduce the environmental effects.

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Q2. In India, which types of poles are commonly used for distribution?

a. Wooden poles.
b. RCC poles.
c. Steel poles.
d. Both (b) and (c)

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Q3. Which among these are the properties for the line supports?

a. Higher mechanical strength.
b. Light in weight.
c. Easy accessibility of conductors for maintenance.
d. All of these.

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Q4. What is the maximum permissible limit of voltage for the line supports?

a. 30 kV
b. 20 kV
c. 11 kV
d. 44 kV

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Q5. To prevent rotting oil the wooden poles which oil is impregnated to it?

a. Kerosene oil.
b. Mineral oil.
c. Creosote oil.
d. All the above.

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Q6. Steel poles are painted so as to prevent it from

a. Corrosion.
b. Borer.
c. Termites.
d. All of these.

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Q7. Which among these is not a type of steel poles?

a. Rail poles.
b. Tubular poles.
c. Rolled steel joints.
d. None of these.

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Q8. What is the usual span of the RCC poles?

a. 250 – 400 m.
b. 80 – 150 m.
c. 50 – 105 m.
d. 10 – 75 m.

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Q9. What is the main purpose for guy wire?

a. Supports the pole.
b. Protects against the surges.
c. Provides emergency earth route.
d. All of these.

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