What is one of the main reasons for earthing electrical systems?

Electrical Systems Earthing Quiz

Quiz
•
Other
•
12th Grade
•
Hard

Kieran Raynes
Used 2+ times
FREE Resource
25 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To increase the potential of any part of the system with respect to earth
To maintain the potential of any part of the system at a defined value with respect to earth
To prevent current from flowing to earth under any circumstances
To ensure that in the event of a fault, apparatus normally 'live' can reach a dangerous potential with respect to earth
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does earthing allow in the event of a fault in electrical systems?
It prevents any current from flowing to earth
It allows current to flow to earth so that protective equipment will not operate
It allows current to flow to earth so that protective equipment will operate to isolate the faulty circuit
It ensures that the faulty circuit remains live and dangerous
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is ensured by earthing in the event of a fault in electrical systems?
That apparatus normally 'live' can reach a dangerous potential with respect to earth
That apparatus normally 'dead' cannot reach any potential with respect to earth
That apparatus normally 'dead' cannot reach a dangerous potential with respect to earth
That no protective equipment will operate
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the voltage level at the local substation in the three phase distribution network diagram?
230 V
400 V
11 kV
400V Three Phase and Neutral
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the voltage between any one line and neutral in the three phase distribution network?
11 kV
400 V
230 V
400V Three Phase
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What color is the line that carries 400V in the three phase distribution network?
Brown Line
Black Line
Grey Line
Neutral
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the TN-S system refer to in common earthing arrangements?
A system with combined neutral and protective conductors
A system with no neutral or protective conductors
A system having separate neutral and protective conductors throughout the system
A system where the protective conductor is earthed at multiple points
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