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.
Which logical step would come first, when approaching fault diagnosis?
2.
Which of the following could cause an SPD to operate?
3.
The most serious result of basic contact with a live conductor would be?
4.
When should an RCD trip, if the setting of 1 times the rating of the RCD is used
5.
Which of the following would cause a loss of supply to an installation?
6.
A low reading ohmmeter used to perform a continuity of protective conductor test, should record results in?
7.
Which of the following documentation would likely be used for any remedial work that has been carried out
8.
A faulty heating 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 1.34Ω and the R2 was measured as 1.86Ω. What would the Zs expected to be?
9.
What is the importance of verifying readings obtained with those listed within BS7671 and associated documents?
10.
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?
11.
To maintain accurate readings, an instrument should?
12.
An intrinsically safe test instrument would be used in?
13.
If an MCB is able to reset after a small duration of time after it has been operated, what is the likely cause?
14.
Which of the following faults, would likely cause a burning smell?
15.
When should an RCD trip, if the setting of half the rating of the RCD is used
16.
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?
17.
Which test is the most logical test to be carried out, to verify a short circuit?
18.
Which of the following could be the most likely factor that could affect rectifying a fault?
19.
If the temperature of a conductor decreases, the resistance?
20.
When are GS38 leads required?
21.
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?
22.
Before beginning fault finding on a domestic property, what should you do?
23.
Once a short circuit fault has been diagnosed and rectified, what is the next step in regards to testing?
24.
Which of the following could be the most likely factor that could affect rectifying a fault?
25.
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?
26.
Which of the following would NOT be acceptable for performing an insulation resistance test?
27.
Which of the following could cause an SPD to operate
28.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
29.
If two bonding conductors or equal length were connected in parallel, the resistance would?
30.
Which of the following could be the most likely factor that could affect rectifying a fault?
By Neil