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.
If a two way switch is not always able to operate lights when it is in the correct position, what is the most likely cause?
2.
Which of the following would be most important to be discussed with the client, prior to any fault diagnostics being carried out?
3.
What documentation may be used to record fault diagnostics work?
4.
One test that will commonly identify short circuits within an electrical installation is the?
5.
Failure to get a reading of polarity using test method one could indicate?
6.
To maintain accurate readings, an instrument should?
7.
The test designed to determine the correct connection of all the protective conductors within installation is known as the?
8.
When should an RCD trip, if the setting of half the rating of the RCD is used
9.
Which of the following could be the most likely factor that could affect rectifying a fault?
10.
Once a short circuit fault has been diagnosed and rectified, what is the next step in regards to testing?
11.
Which device will protect circuits and equipment from transient voltages?
12.
What is the importance of verifying readings obtained with those listed within BS7671 and associated documents?
13.
Which of the following would be the most likely cause of the final light in a lighting circuit not working, when the other lights do
14.
When are GS38 leads required?
15.
The insulation resistance test voltage for a 230v installation is?
16.
The non-statutory document detailing the care and use of tests instruments, leads and probes is?
17.
When should an RCD trip, if the setting of 5 times the rating of the RCD is used?
18.
A domestic heating circuit has been rectified and a new programmer was installed, what should the electrician do before leaving site?
19.
Which of the following is NOT a scale commonly found on an RCD tester?
20.
Which test is the most accurate to test the sensitivity of an RCD?
21.
Which of the following would cause a loss of supply to an installation
22.
If two bonding conductors or equal length were connected in parallel, the resistance would?
23.
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?
24.
Which of the following tests should be performed specifically on a three-phase circuit?
25.
Which is the correct method of disposing of Asbestos?
26.
If an MCB is not able to reset after a small duration of time after it has been operated, what is the likely cause?
27.
Which test is the most logical test to be carried out, to verify a cross connection?
28.
The procedure for proving dead should be by use of a proprietary test lamp or two pole voltage detecting device as recommended by?
29.
If an RCD has operated, which fault is most likely to cause this?
30.
Which test is the most logical test to be carried out, to verify an open circuit?
By Neil