Industrial Wiring Practice Set 4
What is the colour code of protective earthing conductor as per NE code?
(A) Blue
(B) Black
(C) Green
(D) Red
Green
What is the recommended resistance value of earth continuity conductor used in domestic wiring installation as per IE Rules?
(A) Not more than 8 ohm
(B) Not more than 3 ohm
(C) Not more than 2 ohm
(D) Not more than 1 ohm
Not more than 1 ohm
How many earth is to be provided for a AC 3 phase induction motor?
(A) 1
(B) 2
(C) 3
(D) 4
2
How to reduce the earth resistance value keep as low?
(A) By connecting two earth in series
(B) By adding more charcole
(C) By connecting to earth in parallel
(D) By adding more salt
By connecting to earth in parallel
What is the minimum clearance required between the wall and backside of a panel board in industrial wiring?
(A) Not less than 22.88 cm
(B) Not less than 18.4 cm
(C) Not less than 15.8 cm
(D) Not less than 10.2 cm
Not less than 18.4 cm