Welcome to your 2365 623 Fault Diagnosis. This mock exam is not a substitute for proper teaching or revision and should only be used as a resource to prepare learners for the exam. The questions (along with the wording and diagrams) contained within the bank of this exam are purely made up by our lecturers and not copied from any actual qualification exam. So while this is an excellent free revision resource, please do not rely on these exam questions alone to help you be successful within your qualifications. When you are ready, please press "start quiz".
1.
To maintain accurate readings, an instrument should?
2.
If a copper busbar is drawing a current of 300A, what will be the physical effect on the actual busbar?
3.
If two bonding conductors or equal length were connected in parallel, the resistance would?
4.
Which of the following could be the most likely factor that could affect rectifying a fault?
5.
Which of the following could cause an SPD to operate?
6.
If three conductors equal in length and with a resistance of 0.15Ω each are connected in series, what is the total resistance?
7.
The minimum insulation resistance value for a SELV installation, according to BS7671 IET Wiring Regulations is?
8.
Which of the following could be the most likely factor that could affect rectifying a fault?
9.
Which of the following should happen in the handover process after fault diagnostics?
10.
The most serious result of basic contact with a live conductor would be?
11.
When should an RCD trip, if the setting of half the rating of the RCD is used
12.
Which is the correct method of disposing of Asbestos?
13.
A faulty lighting circuit which was supplied from a 230V, 50Hz single phase supply and a recorded Ze of 0.8Ω. The resistance of R1 was measured at 1.54Ω and the R2 was measured as 1.98Ω. What would the Zs expected to be?
14.
When should an RCD trip, if the setting of 1 times the rating of the RCD is used
15.
During a continuity of Ring final conductors test, 10 Sockets give a R1+R2 reading of 0.68Ω, but one socket gives a reading of 0.92Ω. What might that indicate?
16.
A low reading ohmmeter used to perform a continuity of protective conductor test, should record results in?
17.
The test designed to determine the correct connection of all the protective conductors within installation is known as the?
18.
Which of the following would NOT be acceptable for performing an insulation resistance test?
19.
The item shown in the photo serves what purpose?
20.
If equipment plugged into a socket outlet is not working, which of the following is the likely cause if the protective device hasn't tripped?
21.
Which of the following could cause an SPD to operate
22.
Which of the following is the most likely of implications caused from an exposed terminal?
23.
When should an RCD trip, if the setting of 5 times the rating of the RCD is used?
24.
Which of the following would most likely cause a motor to not work, if the circuit is healthy?
25.
If 2 different sized cables were connected together in parallel and measured using a low resistance ohmmeter, the overall resistance will
26.
The correct safe isolation procedure on a 3 phase circuit will result in a voltage indicating device being connected across terminals, in how many different combinations to ensure it is adequately proved dead?
27.
Which is the correct method of disposing of plasterboard on site?
28.
Which of the following is NOT a scale commonly found on an RCD tester?
29.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
30.
Which device will protect circuits and equipment from transient voltages?
By Neil