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Wireman Set-1
Commercial wiring 2
27

Commercial wiring 2 MCQ with Answers

27) What is the property of heating element used in electrical heating appliances?

Low co efficient of expansion

Low specific resistance

Low mechanical strength

Low voltage withstanding

Answer is:

Low co efficient of expansion

Commercial wiring 2 MCQ with Answers

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Related Commercial wiring 2 MCQ with Answers

28) Which is the permissible voltage drop in declared voltage supply to HT consumer as per IE rule?

Not more than 5%

Not more than 8%

Not more than 10%

Not more than 12%

Answer is:

Not more than 12%

29) Which wiring system is suitable for high rise buildings?

Looping out from switches

Distribution system

Ring main system

Tree system

Answer is:

Tree system

30) Which type of distribution is suitable for commercial wiring of multistoried flats?

Looping out with junction

Looping out with swit

Bus chamber

Raising mains

Answer is:

Raising mains

31) Which system of wiring enables the appliances connected to the system to have same voltage?

Ring main system

Raising main system

Distribution board system

Tree system

Answer is:

Distribution board system

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