WIRING INSTALLATION AND EARTHING - Quiz

1) What is the reason of lamp glowing dim and motor running slow in a domestic wiring circuit?

Open circuit in the neutral line Short circuit between conductors High value series resistance fault Open circuit in the earth conductor

2) Which wiring installation the System earthing is to be done?

Substations Godown wiring Domestic wiring Commercial wiring

3) How to control harmonic distortions in neutral connections as per IE rule?

Earthing through impedance Providing by plate earthing Increasing conductor size Providing parallel earthing

4) What is the function of current reverser in earth resistance tester

Converts A.C. into D.C Reverses the polarity of D.C Changes D.C. supply into A.C supply Reverses the direction of rotation of the generator

5) What is the advantage of stranded conductor over solid conductor?

Cost is less More flexible Less voltage drop More insulation resistance