Under Ground Cables-II - MCQs with Answers

Under Ground Cables-II - MCQs with Answers

Q1. What is the purpose of bedding on the underground cables?

a. To avoid leakage of current.
b. To protect the sheath against corrosion.
c. To protect the sheath from mechanical injury due to armouring.
d. Both (b) and (c)

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Q2. Armouring is provided above the bedding. The armouring consists of one or two layers of which wire or tape?

a. Galvanised steel wire.
b. Thin wires of copper.
c. Wires of aluminium.
d. Wire made of both copper and cadmium.

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Q3. Why are the inter sheaths in cables used?

a. Provides proper stress distribution.
b. Minimises the stress.
c. Provides protection against moisture, current and voltage surges.
d. To improve the insulation.

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Q4. A layer similar to bedding is provided on the armouring to protect the whole cable from all atmospheric conditions. Which layer is this?

a. Insulation.
b. A layer of jute.
c. Serving.
d. Sheath.

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