Welcome to your 2365 623 Fault Diagnosis
1.
The non-statutory document detailing the care and use of tests instruments, leads and probes is?
2.
Which logical stage should be carried out first, before carrying out fault diagnosis?
3.
Which of the following would most likely cause a motor to not work, if the circuit is healthy?
4.
If two bonding conductors or equal length were connected in parallel, the resistance would?
5.
The item shown in the photo serves what purpose?
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.
To maintain accurate readings, an instrument should?
9.
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
10.
A test instrument has a calibration date that has passed, what should be your course of action?
11.
The insulation resistance test voltage for a SELV installation is?
12.
Which logical step would come first, when approaching fault diagnosis?
13.
If an MCB has tripped due to a fault, which test would be most suitable to verify the fault?
14.
When are GS38 leads required?
15.
If 2 different sized cables were connected together in parallel and measured using a low resistance ohmmeter, the overall resistance will
16.
Which of the following faults, would likely cause a burning smell?
17.
Which device will protect circuits and equipment from transient voltages?
18.
Which of the following is the most likely of implications caused from fault diagnostics?
19.
What documentation may be used to record fault diagnostics work?
20.
If a copper busbar is drawing a current of 300A, what will be the physical effect on the actual busbar?
21.
Which of the following would cause a loss of supply to an installation?
22.
It is recommended that test instruments are nulled to?
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.
What is the importance of verifying readings obtained with those listed within BS7671 and associated documents?
25.
One test that will commonly identify short circuits within an electrical installation is the?
26.
A polarity test is conducted to verify that?
27.
Which test is the most accurate to test the sensitivity of an RCD?
28.
Which is the correct method of disposing of plasterboard on site?
29.
Which test is the most logical test to be carried out, to verify a cross connection?
30.
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?
By Neil