Which of the following is NOT a disadvantage of the direct laying method?a)The maintenance cost is very high.b)Heat can be dissipated easilyc)It cannot be used in congested areas.d)Localization of the fault is difficult.Correct answer is option 'B'. Can you explain this answer? - EduRev Electrical Engineering (EE) Question

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Which of the following is NOT a disadvantage of the direct laying method?

a)
The maintenance cost is very high.
b)
Heat can be dissipated easily
c)
It cannot be used in congested areas.
d)
Localization of the fault is difficult.

Correct answer is option 'B'. Can you explain this answer?

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Which of the following is NOT a disadvantage of the direct laying meth...

Direct Laying Of Underground Cables

The cables to be laid using this method must have a serving of bituminized paper and hessian tape so as to provide protection against corrosion and electrolysis.

The direct laying procedure is as follows:

A trench of about 1.5 meters deep and 45 cm wide is dug.
Then the trench is covered with a 10 cm thick layer of fine sand.
The cable is laid over the sand bed. The sand bed protects the cable from moisture from the ground.
Then the laid cable is again covered with a layer of sand about 10 cm thick.
When multiple cables are to be laid in the same trench, a horizontal or verticle spacing of about 30 cm is provided to reduce the effect of mutual heating. Spacing between the cables also ensures a fault occurring on one cable does not damage the adjacent cable.
The trench is then covered with bricks and soil to protect the cable from mechanical injury.

Advantages

Simple and cheap method.
The heat generated in cables is easily dissipated in the ground.

Disadvantages

Alterations in the cable network are not easy.
Maintenance cost is higher.
Identifying the location of a fault is difficult.
This method can not be used in congested areas such as metro cities where excavation is too expensive.

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Which of the following is NOT a disadvantage of the direct laying method?a)The maintenance cost is very high.b)Heat can be dissipated easilyc)It cannot be used in congested areas.d)Localization of the fault is difficult.Correct answer is option 'B'. Can you explain this answer?

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Which of the following is NOT a disadvantage of the direct laying method?a)The maintenance cost is very high.b)Heat can be dissipated easilyc)It cannot be used in congested areas.d)Localization of the fault is difficult.Correct answer is option 'B'. Can you explain this answer? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about Which of the following is NOT a disadvantage of the direct laying method?a)The maintenance cost is very high.b)Heat can be dissipated easilyc)It cannot be used in congested areas.d)Localization of the fault is difficult.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Which of the following is NOT a disadvantage of the direct laying method?a)The maintenance cost is very high.b)Heat can be dissipated easilyc)It cannot be used in congested areas.d)Localization of the fault is difficult.Correct answer is option 'B'. Can you explain this answer?.

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