LESSON 1
APPLICATION OF TEST METERS
TASK
Describe and identify theory and terminology used in the application of test meters.
CONDITIONS
Given the information and illustration about
terms
and
theory
relating
to
application of volt/ohmmeter for TV maintenance.
STANDARDS
Demonstrate competency of the task, skills and knowledge by correctly responding to
80 percent of the multiple-choice test covering theory and terminology of the
application of test meters.
REFERENCES
None
Learning Event 1:
DETERMINE WHAT A MEASURING INSTRUMENT IS
1.
Measuring Instruments.
The primary measuring instrument that you use in
These three instruments are basically current measuring devices.
The main
difference in construction is that an external resistance is connected with respect
to the moving element in different ways.
2.
The electrical instrument used to measure
the current in an
electrical circuit is called an ammeter.
It is connected to
measure the current
passing a given point. Figure 11b illustrates how you connect
an ammeter into the
circuit to measure the current passing point P of Figure 1-1a.
When you connect an
ammeter between the source and the load shown in Figure 11b, it
is in a series.
1
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