What is the effect on an installation forming part of an MEN system if the PEN conductor develops a high impedance?
Unit 16 - ELT 604 (Practice CBT)

Quiz
•
Other
•
University
•
Medium
CA Cole
Used 11+ times
FREE Resource
31 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Voltage will appear on earthed metalwork.
Installation neutral conductor will overheat.
Protective devices will operate more quickly under fault conditions.
Voltage will only appear on earthed metalwork if an earth fault occurs.
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which parts of an electrical installation are connected by the earthing conductor?
Exposed conductive parts and main earthing terminal.
Main earthing terminal and earth electrode
Two extraneous conductive parts.
No connection needed
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the purpose of equipotential bonding?
To earth an exposed conductive part.
To earth the metal casing of Class I equipment.
To provide a conducting path in the event of an earth fault.
To keep two exposed Conductive parts at or about the same potential.
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What factor affects the value of earth fault loop impedance of a circuit?
Resistance of the neutral conductor.
Type of cable insulation.
Rating or the circuit protective device.
Length of circuit cable.
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What is the maximum residual operating current of an RCD that provides protection against contact with live parts?
10 mA
30 mA
100 mA
300 mA
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Which method may be used to safeguard an installation against overvoltage?
Fit a surge protective device at the main terminals.
Connect the installation to an overhead distribution system.
All appliances rave an impulse withstand voltage of 6 kA.
Installation has a main fuse or circuit breaker which disconnects the maximum fault current.
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
What action must be taken when carrying out a visual inspection of a new electrical installation?
Installation must be totally isolated from the supply.
All testing must be carried out before the inspection starts.
Only the wiring and control equipment is inspected.
All cables are inspected throughout their length.
Create a free account and access millions of resources
Similar Resources on Quizizz
30 questions
2365 203 Pt2

Quiz
•
University
33 questions
Mixed Quiz

Quiz
•
University
27 questions
Rotation, Revolution, Seasons

Quiz
•
KG - University
33 questions
RISK 112 ( Ch.3)

Quiz
•
University
30 questions
EC 311 Q1

Quiz
•
University
30 questions
2365 203 Pt 3

Quiz
•
University
34 questions
Electrical symbols

Quiz
•
11th Grade - University
30 questions
EL0018 Topics 1, 2 & 3

Quiz
•
University
Popular Resources on Quizizz
15 questions
Character Analysis

Quiz
•
4th Grade
17 questions
Chapter 12 - Doing the Right Thing

Quiz
•
9th - 12th Grade
10 questions
American Flag

Quiz
•
1st - 2nd Grade
20 questions
Reading Comprehension

Quiz
•
5th Grade
30 questions
Linear Inequalities

Quiz
•
9th - 12th Grade
20 questions
Types of Credit

Quiz
•
9th - 12th Grade
18 questions
Full S.T.E.A.M. Ahead Summer Academy Pre-Test 24-25

Quiz
•
5th Grade
14 questions
Misplaced and Dangling Modifiers

Quiz
•
6th - 8th Grade