UG CABLE - Practice Mode

1) Why stranded conductors are used in underground cable?

To provide flexibility To reduce conductivity To provide mechanical strength To reduce the weight

Correct Answer: To provide flexibility

2) Which is the property of insulating materials used in under ground cable?

Hygroscopic High insulation resistance Low mechanical strength High conductivity

Correct Answer: High insulation resistance

3) Which type of insulation is also known as empire type?

Impregnated paper Varnished cambric Polyvinyl Chloride Rubber

Correct Answer: Varnished cambric

4) What is the drawback of rubber insulation used in under ground cable ?

Absorbs moisture Hard Low mechanical strength High hygroscopic

Correct Answer: Absorbs moisture

5) What is the advantage of Vulcanised Indian Rubber ?

Safe temperature is high Hygroscopic Greater mechanical strength High conductivity

Correct Answer: Greater mechanical strength

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