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 stage should be carried out first, before carrying out fault diagnosis?
2.
The insulation resistance test voltage for a SELV installation is?
3.
If a copper conductor was halved in length, the resistance would?
4.
Which of the following would most likely cause a motor to not work, if the circuit is healthy?
5.
If an RCD has tripped due to a fault, which test would be most suitable to verify the fault?
6.
If two bonding conductors or equal length were connected in parallel, the resistance would?
7.
Which of the following documentation would likely be used for any remedial work that has been carried out
8.
To maintain accurate readings, an instrument should?
9.
A 3 phase motor circuit has been rectified, which of the following test should have been carried out on the circuit?
10.
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?
11.
The most serious result of basic contact with a live conductor would be?
12.
Which of the following could cause an SPD to operate?
13.
If a copper busbar is drawing a current of 300A, what will be the physical effect on the actual busbar?
14.
Which of the following could cause an SPD to operate
15.
If an MCB has tripped due to a fault, which test would be most suitable to verify the fault?
16.
Which logical step would come first, when approaching fault diagnosis?
17.
The non-statutory document detailing the care and use of tests instruments, leads and probes is?
18.
It is recommended that test instruments are nulled to?
19.
Which of the following could be the most likely factor that could affect rectifying a fault?
20.
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?
21.
Which of the following should happen in the handover process after fault diagnostics?
22.
What is considered Low Voltage?
23.
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?
24.
The minimum insulation resistance value for a SELV installation, according to BS7671 IET Wiring Regulations is?
25.
A polarity test is conducted to verify that?
26.
Which of the following could be the most likely factor that could affect rectifying a fault?
27.
An intrinsically safe test instrument would be used in?
28.
Which of the following would NOT be acceptable for performing an insulation resistance test?
29.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
30.
If an MCB is able to reset after a small duration of time after it has been operated, what is the likely cause?
By Neil