A-003-05: Oscilloscope
A-003-05-01:
If a 100 Hz signal is fed to the horizontal input of an oscilloscope and a 150 Hz signal is fed to the vertical input, what type of pattern should be displayed on the screen?
A looping pattern with 3 horizontal loops, and 2 vertical loops
A rectangular pattern 100 mm wide and 150 mm high
An oval pattern 100 mm wide and 150 mm high
A looping pattern with 100 horizontal loops and 150 vertical loops
A-003-05-02:
What factors limit the accuracy, frequency response and stability of an oscilloscope?
Accuracy of the time base and the linearity and bandwidth of the deflection amplifiers
Deflection amplifier output impedance and tube face frequency increments
Accuracy and linearity of the time base and tube face voltage increments
Tube face voltage increments and deflection amplifier voltages
A-003-05-03:
How can the frequency response of an oscilloscope be improved?
By increasing the horizontal sweep rate and the vertical amplifier frequency response
By using a crystal oscillator as the time base and increasing the vertical sweep rate
By increasing the vertical sweep rate and the horizontal amplifier frequency response
By using triggered sweep and a crystal oscillator for the timebase
A-003-05-04:
You can use an oscilloscope to display the input and output of a circuit at the same time by:
utilizing a dual trace oscilloscope
measuring the input on the X axis and the output on the Y axis
measuring the input on the X axis and the output on the Z axis
measuring the input on the Y axis and the output on the X axis
A-003-05-05:
An oscilloscope cannot be used to:
determine FM carrier deviation
measure frequency
measure DC voltage
determine the amplitude of complex voltage wave forms
A-003-05-06:
The bandwidth of an oscilloscope is:
the highest frequency signal the scope can display
directly related to gain compression
indirectly related to screen persistence
a function of the time-base accuracy
A-003-05-07:
When using Lissajous figures to determine phase differences, an indication of zero or 180 degrees is represented on the screen of an oscilloscope by:
a diagonal straight line
a horizontal straight line
an ellipse
a circle
A-003-05-08:
A 100-kHz signal is applied to the horizontal channel of an oscilloscope. A signal of unknown frequency is applied to the vertical channel. The resultant wave form has 5 loops displayed vertically and 2 loops horizontally. The unknown frequency is:
40 kHz
20 kHz
50 kHz
30 kHz
A-003-05-09:
What item of test equipment contains horizontal and vertical channel amplifiers?
An oscilloscope
A signal generator
An ammeter
An ohmmeter
A-003-05-10:
What is the best instrument to use to check the signal quality of a CW or single-sideband phone transmitter?
An oscilloscope
A sidetone monitor
A signal tracer and an audio amplifier
A field-strength meter
A-003-05-11:
What signal source is connected to the vertical input of an oscilloscope when checking the quality of a transmitted signal?
the RF signals of a nearby receiving antenna
the IF output of a monitoring receiver
the audio input of the transmitter
the RF output of the transmitter
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