Welcome to your 2365 623 Fault Diagnosis
1.
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
2.
Which of the following would cause a loss of supply to an installation?
3.
Which of the following would cause a loss of supply to an installation
4.
If the temperature of a conductor decreases, the resistance?
5.
Which of the following faults, would likely cause a burning smell?
6.
To maintain accurate readings, an instrument should?
7.
Which of the following could be the most likely factor that could affect rectifying a fault?
8.
Which is one of the main hazards of an old building with insulated pipes coming from old boilers?
9.
Which test is the most logical test to be carried out, to verify a cross connection?
10.
Which test is the most accurate to test the sensitivity of an RCD?
11.
A low reading ohmmeter used to perform a continuity of protective conductor test, should record results in?
12.
Which logical step would come first, when approaching fault diagnosis?
13.
When are GS38 leads required?
14.
Which is likely to be the first source to help with fault diagnostics?
15.
If two bonding conductors or equal length were connected in parallel, the resistance would?
16.
Which of the following should happen in the handover process after fault diagnostics?
17.
The non-statutory document detailing the care and use of tests instruments, leads and probes is?
18.
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?
19.
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?
20.
Which of the following is NOT a scale commonly found on an RCD tester?
21.
Which of the following could be the most likely factor that could affect rectifying a fault?
22.
Which of the following would an inspector check, for a suspected voltage drop within a circuit?
23.
A domestic heating circuit has been rectified and a new programmer was installed, what should the electrician do before leaving site?
24.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
25.
During a continuity of Ring final conductors test in a domestic building, ten sockets give a R1+R2 reading of 0.5Ω, but an additional three sockets in the garage from the same circuit gives readings of 0.6Ω, 0.7Ω and 0.8Ω respectively. What might that indicate?
26.
When should an RCD trip, if the setting of half the rating of the RCD is used
27.
One test that will commonly identify short circuits within an electrical installation is the?
28.
The insulation resistance test voltage for a SELV installation is?
29.
If three conductors equal in length and with a resistance of 0.15Ω each are connected in series, what is the total resistance?
30.
Which of the following tests should be performed specifically on a three-phase circuit?
By Neil