Welcome to your 2365 623 Fault Diagnosis
1.
Which of the following is not a requirement of test probes and leads according to GS38?
2.
Which of the following is likely to cause a transient voltage spike?
3.
Which of the following is NOT a scale commonly found on an RCD tester?
4.
If an MCB has tripped due to a fault, which test would be most suitable to verify the fault?
5.
Which test is the most logical test to be carried out, to verify a cross connection?
6.
The insulation resistance test voltage for a SELV installation is?
7.
Which is the correct method of disposing of Asbestos?
8.
Which of the following could cause an SPD to operate
9.
Which test is the most accurate to test the sensitivity of an RCD?
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.
Which of the following would cause a loss of supply to an installation?
12.
Which of the following would an inspector check, for a suspected voltage drop within a circuit?
13.
Before beginning fault finding on a domestic property, what should you do?
14.
If a copper busbar is drawing a current of 300A, what will be the physical effect on the actual busbar?
15.
If 2 cables are connected together in series and measured the overall resistance will?
16.
The test designed to determine the correct connection of all the protective conductors within installation is known as the?
17.
Which of the following would cause a loss of supply to an installation
18.
Once a short circuit fault has been diagnosed and rectified, what is the next step in regards to testing?
19.
What is the importance of verifying readings obtained with those listed within BS7671 and associated documents?
20.
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?
21.
Before using a multifunction test instrument, what is the MOST important thing should you check for?
22.
The item shown in the photo serves what purpose?
23.
Which of the IET Guidance Notes will be most useful for fault diagnostics?
24.
The procedure for proving dead should be by use of a proprietary test lamp or two pole voltage detecting device as recommended by?
25.
Which of the following would cause insufficient voltage supplying a light circuit?
26.
If two bonding conductors or equal length were connected in parallel, the resistance would?
27.
An insulation resistance test is performed on a standard final circuit, what should the instrument be set to measure in?
28.
Which of the following tests should be performed specifically on a three-phase circuit?
29.
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?
30.
When should an RCD trip, if the setting of half the rating of the RCD is used
