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 of the following would most likely cause a motor to not work, if the circuit is healthy?
2.
The minimum insulation resistance value for a SELV installation, according to BS7671 IET Wiring Regulations is?
3.
Which of the following would cause a loss of supply to an installation
4.
Before beginning fault finding on a domestic property, what should you do?
5.
An intrinsically safe test instrument would be used in?
6.
When should an RCD trip, if the setting of 5 times the rating of the RCD is used?
7.
Which test is the most logical test to be carried out, to verify a short circuit?
8.
If an RCD has tripped due to a fault, which test would be most suitable to verify the fault?
9.
Which device will protect circuits and equipment from transient voltages?
10.
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
11.
The safest and most convenient way of proving the reliability of a voltage indicating device is?
12.
Which of the following would cause a loss of supply to an installation?
13.
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?
14.
If a copper busbar is drawing a current of 300A, what will be the physical effect on the actual busbar?
15.
The insulation resistance test voltage for a 230v installation is?
16.
If an MCB has tripped due to a fault, which test would be most suitable to verify the fault?
17.
Which of the following tests should be performed specifically on a three-phase circuit?
18.
Which test is the most logical test to be carried out, to verify an earth leakage?
19.
Which of the following could be the most likely factor that could affect rectifying a fault?
20.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
21.
A domestic heating circuit has been rectified and a new programmer was installed, what should the electrician do before leaving site?
22.
One test that will commonly identify short circuits within an electrical installation is the?
23.
The test designed to determine the correct connection of all the protective conductors within installation is known as the?
24.
If three conductors equal in length and with a resistance of 0.15Ω each are connected in series, what is the total resistance?
25.
Which is the correct method of disposing of Asbestos?
26.
A low reading ohmmeter used to perform a continuity of protective conductor test, should record results in?
27.
When are GS38 leads required?
28.
What documentation may be used to record fault diagnostics work?
29.
Which test is the most accurate to test the sensitivity of an RCD?
30.
Which is one of the main hazards of an old building with insulated pipes coming from old boilers?
By Neil