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DigitalElectronicsU1L2AnalogandDigitalSignals

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 
What is the peak amplitude of the given signal?

mc001-1.jpg
a.
5V
c.
10V
b.
15V
d.
7.5V
 

 2. 
What is the peak-to-peak amplitude of the given signal?

mc002-1.jpg
a.
5V
c.
10V
b.
15V
d.
7.5V
 

 3. 
What is the period of the given signal?

mc003-1.jpg
a.
200ns
c.
500ns
b.
2000ns
d.
400ns
 

 4. 
What is the frequency of the given signal?

mc004-1.jpg
a.
200Hz
c.
5Hz
b.
0.002Hz
d.
2MHz
 

 5. 
What is the peak amplitude of the given signal?

mc005-1.jpg
a.
2V
c.
4V
b.
1V
d.
500V
 

 6. 
What is the peak-to-peak amplitude of the given signal?

mc006-1.jpg
a.
2V
c.
4V
b.
1V
d.
500V
 

 7. 
What is the period of the given signal?

mc007-1.jpg
a.
mc007-2.jpg
c.
mc007-3.jpg
b.
10ms
d.
mc007-4.jpg
 

 8. 
What is the frequency of the given signal?

mc008-1.jpg
a.
0.001Hz
c.
2kHz
b.
1kHz
d.
10kHz
 

 9. 
This signal is a __________ signal.

mc009-1.jpg
a.
Digital
c.
Analog
b.
Discrete
d.
random
 

 10. 
This signal is a __________ signal.

mc010-1.jpg
a.
Digital
c.
Analog
b.
Discrete
d.
random
 

 11. 
This signal is a __________ signal.

mc011-1.jpg
a.
Digital
c.
Analog
b.
Discrete
d.
random
 

 12. 
What is the amplitude of the given signal?

mc012-1.jpg
a.
2V
c.
10V
b.
4V
d.
5V
 

 13. 
What is the period of the given signal?

mc013-1.jpg
a.
mc013-2.jpg
c.
mc013-4.jpg
b.
mc013-3.jpg
d.
mc013-5.jpg
 

 14. 
What is the time high of the given signal?

mc014-1.jpg
a.
mc014-2.jpg
c.
mc014-4.jpg
b.
mc014-3.jpg
d.
mc014-5.jpg
 

 15. 
What is the time low of the given signal?

mc015-1.jpg
a.
mc015-2.jpg
c.
mc015-4.jpg
b.
mc015-3.jpg
d.
mc015-5.jpg
 

 16. 
What is the frequency of the given signal?

mc016-1.jpg
a.
2.5kHz
c.
10kHz
b.
5kHz
d.
3.3kHz
 

 17. 
What is the duty cycle of the given signal?

mc017-1.jpg
a.
25%
c.
75%
b.
50%
d.
100%
 

 18. 
What is the amplitude of the given signal?

mc018-1.jpg
a.
2V
c.
10V
b.
4V
d.
5V
 

 19. 
What is the period of the given signal?

mc019-1.jpg
a.
1.65ms
c.
1.5ms
b.
mc019-2.jpg
d.
mc019-3.jpg
 

 20. 
What is the time high of the given signal?

mc020-1.jpg
a.
1.65ms
c.
1.5ms
b.
mc020-2.jpg
d.
mc020-3.jpg
 

 21. 
What is the time low of the given signal?

mc021-1.jpg
a.
1.65ms
c.
1.5ms
b.
mc021-2.jpg
d.
mc021-3.jpg
 

 22. 
What is the frequency of the given signal?

mc022-1.jpg
a.
667Hz
c.
6.6kHz
b.
500Hz
d.
606.06Hz
 

 23. 
What is the duty cycle of the given signal?

mc023-1.jpg
a.
10%
c.
50%
b.
90%
d.
30%
 

 24. 
What does “A” represent on the given waveform?

mc024-1.jpg
a.
Period
c.
Peak-to-Peak Amplitude
b.
Peak Amplitude
d.
Frequency
 

 25. 
What does “B” represent on the given waveform?

mc025-1.jpg
a.
Period
c.
Peak-to-Peak Amplitude
b.
Peak Amplitude
d.
Frequency
 

 26. 
What does “C” represent on the given waveform?

mc026-1.jpg
a.
Period
c.
Peak-to-Peak Amplitude
b.
Peak Amplitude
d.
Frequency
 

 27. 
What does “E” represent on the given waveform?

mc027-1.jpg
a.
Amplitude
c.
Time Low
b.
Time High
d.
Rising Edge
 

 28. 
What does “F” represent on the given waveform?

mc028-1.jpg
a.
Amplitude
c.
Time Low
b.
Time High
d.
Rising Edge
 

 29. 
What does “D” represent on the given waveform?

mc029-1.jpg
a.
Amplitude
c.
Time Low
b.
Time High
d.
Rising Edge
 

 30. 
What does “B” represent on the given waveform?

mc030-1.jpg
a.
Time Low
c.
Falling Edge
b.
Time High
d.
Rising Edge
 

 31. 
What does “C” represent on the given waveform?

mc031-1.jpg
a.
Time Low
c.
Falling Edge
b.
Time High
d.
Rising Edge
 

 32. 
What does “A” represent on the given waveform?

mc032-1.jpg
a.
Period
c.
Falling Edge
b.
Time High
d.
Rising Edge
 

Multiple Response
Identify one or more choices that best complete the statement or answer the question.
 

 33. 

      Using the Circuit Design Software (CDS) Multisim, enter the test circuit shown below. This circuit consists of a CLOCK_VOLTAGE, a DC_POWER (battery) and two 5v LAMPS. This circuit doesn’t really do much of anything useful other than make the two lamps flash, but we will be using it to gain experience using the oscilloscope to measure signals.

      mr033-1.jpg


a)      Open the CLOCK_VOLTAGE component by double clicking on it and set the frequency, duty cycle, and voltage to 20 Hz, 10%, and 5 volts. 


b)      Likewise, open the DC_POWER and set the voltage to 5 volts.


c)      Finally, connect the OSCILLOSCOPE to the positive side of the CLOCK_VOLTAGE component. 


Start the simulation. Are the lamps flashing? Does the flashing rate make sense for the frequency and duty cycle of the CLOCK_VOLTAGE? If not, review your setup and make any necessary corrections.  YOU MUST SHOW ME YOUR WORKING CIRCUIT.

Now that the circuit is working, use the oscilloscope to measure the signal being generated by the CLOCK_VOLTAGE. Use the markers to measure the period, time high, and time low. Use this data to calculate the frequency and  duty cycle of the signal.  The markers are flags marked “1” and “2” in the figure above.  These can be dragged from side-to-side and lined up on the vertical transitions of the wave.  The readings for these markers are found in the area to the right of the labels T1 and T2.  In the figure below, Marker 1 is showing the Time High to be about 5ms.  Marker 2 is showing the period to be about 50ms. 

mr033-2.jpg

Calculate the duty cycle and frequency.
 a.
Duty Cycle = 50%
 e.
Duty Cycle = 100%
 b.
Duty Cycle = 10%
 f.
Duty Cycle = 90%
 c.
f = 20Hz
 g.
f = 20kHz
 d.
f = 40Hz
 h.
f = 10Hz
 

 34. 
What are the two standard voltage levels that are acceptable for a digital signal?
(Select two answers)
 a.
0V
 d.
3V
 b.
1V
 e.
4V
 c.
2V
 f.
5V
 



 
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