of the test and under
continuous operation at full
load, continued to exceed the rated output by 1%.
The maximum duration of this test was 20 min-
utes. It is possible, however, that the device would
increase in temperature and the output may fall
further after prolonged operation.
Further tests are
necessary to check this. Overall the device per-
formed in excess of its rated output.
(Sign and date the report)
Tom Denton, Wednesday, 25th Jan. 2006
Introduction
5
Knowledge check questions
To
use these questions, you should first try to answer them without help but if necessary, refer back to
the content of the chapter. Use notes, lists and sketches as appropriate to answer them. It is not neces-
sary to write pages and pages of text!
1. State the meaning of the terms ‘fault’ and ‘symptom’.
2. Explain how to reduce the risk of a short circuit when testing electrical systems.
3. List the main headings that could be used for a standard report.
4. State the two main pieces of knowledge necessary to diagnose faults.
5. Describe the potential dangers of running an engine in an enclosed space without exhaust extraction.
