27
3-24. Typical rf signal generators use which of
the following methods for modulation?
1. Internal modulation
2. External modulation
3. Both 1 and 2 above
4. Power supply modulation
3-25. The modulating circuit in an rf signal
generator serves which of the following
purposes?
1. It produces an fm signal that can be
superimposed on the rf signal
2. It produces a video signal that can be
superimposed on the rf signal
3. It produces an audio signal that can be
superimposed on the rf signal
4. Both 2 and 3 above
3-26. The output level meter of a signal
generator reads 0. 10 with the attenuator
set to 080. 0. What is the actual output in
microvolts?
1.
00.08
2.
00.80
3.
08.00
4.
80.00
3-27. Frequency counters serve which of the
following purposes?
1. Measure voltage in a circuit
2. Measure frequencies in a circuit
3. Produce voltages to test a circuit
4. Produce frequencies to power a
circuit
3-28. In which of the following ways is a logic
probe useful to a technician?
1. It detects steady logic levels
2. It detects a train of logic levels
3. Both 1 and 2 above
4. It displays the shape of high-speed
transients
3-29. In logic probes, which of the following
devices is used as an indicator?
1. A dial
2. An LED
3. A scale
4. A pointer
3-30. The Tracker 2000 is used to isolate
defective components on de-energized
circuits only.
1. True
2. False
3-31. The VERT control adjustment controls
what position of the signal on the CRT
display?
1. Horizontal
2. Vertical
3. Trace rotation left
4. Trace rotation right
3-32. The axes of the CRT display on the
Tracker 2000 are divided into what
number of quadrants?
1.
1
2.
2
3.
3
4.
4
3-33. Quadrant 2 on the Tracker 2000 CRT is
used to display what signal information?
1. Positive voltage negative current
2. Positive voltage and positive current
3. Negative voltage and negative current
4. Negative voltage and positive current
3-34. When you are adjusting the level control
on the Tracker 2000, the peak of each
pulse will be from 0 volts to what
maximum voltage level?
1.
1
2.
5
3.
3
4.
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