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Wireman Set-1
Domestic Wiring Practice
38

Domestic Wiring Practice MCQ with Answers

38) What is the thickness of copper plate used for plate earthing?

Not less than 2.0 mm

Not less than 2.5 mm

Not less than 3.15 mm

Not less than 6.5 mm

Answer is:

Not less than 3.15 mm

Domestic Wiring Practice MCQ with Answers

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Related Domestic Wiring Practice MCQ with Answers

39) Which method is preferred to reduce the value of earth resistance?

By increasing the dia of pipe

Connecting number of earth electrode in parallel

By increasing the depth of earth pit

By connecting insulated cables

Answer is:

Connecting number of earth electrode in parallel

40) Where system earthing is employed?

Commercial buildings

Industries

Generating station

Domestic buildings

Answer is:

Generating station

41) Where plate earthing is used?

Commercial building

Substations

Industries

Multistoried buildings

Answer is:

Substations

42) What is the permissible leakage current in any wiring installation as per IE rule?

Not exceed 1/50th part of full load current

Not exceed 1/500th part of full load current

Not exceed 1/5000th part of full load current

Not exceed 1/50000th part of full load current

Answer is:

Not exceed 1/5000th part of full load current

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