Question 1

The DSP, unlike the general- purpose microprocessor, must typically process data in real time; that is, as it happens.

Accepted Answer

A) True 
 B)False  True

Question 2

Quantization is performed by a(n) D) packets.

Accepted Answer

A)  DAC 
B)  DSP 
C)  ADC 
D)  Filter 
A)  DAC 
B)  DSP 
C)  ADC 
D)  Filter C

Question 3

What advantage does the R/2R ladder DAC have over a binary- weighted- input DAC?

Accepted Answer

A)  The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot. 
B)  It uses only two different resistor values. 
C)  It is much easier to analyze its operation. 
D)  It has fewer parts for the same number of inputs. 
A)  The virtual ground is eliminated and the circuit is therefore easier to understand and troubleshoot. 
B)  It uses only two different resistor values. 
C)  It is much easier to analyze its operation. 
D)  It has fewer parts for the same number of inputs. B

Question 4

DSP applications include ________.

Accepted Answer

A)  image processing 
B)  music processing 
C)  filtering 
D)  all of the above 
A)  image processing 
B)  music processing 
C)  filtering 
D)  all of the above

Question 5

The main advantage that a tracking A/D converter has over a stairstep- ramp A/D converter is that it ________.

Accepted Answer

A)  uses an up/down counter to allow it to measure both positive and negative voltages 
B)  is faster 
C)  does not require a counter 
D)  uses an up/down counter to indicate the polarity of the input voltage 
A)  uses an up/down counter to allow it to measure both positive and negative voltages 
B)  is faster 
C)  does not require a counter 
D)  uses an up/down counter to indicate the polarity of the input voltage

Question 6

Refer to the figure below. What should the display on the scope look like if the A/D converter is working properly?

Accepted Answer

A)  The pattern should be a straight line across the screen due to the equal but opposite voltages being applied to the scope inputs. 
B)  The scope should display a sequential binary count with the LSB being on the left and the MSB on the right side of the display. 
C)  A uniform stairstep pattern should be displayed. 
D)  It should be a circular Lissajous pattern resulting from the simultaneous application of ramps to the vertical and horizontal inputs of the oscilloscope. 
A)  The pattern should be a straight line across the screen due to the equal but opposite voltages being applied to the scope inputs. 
B)  The scope should display a sequential binary count with the LSB being on the left and the MSB on the right side of the display. 
C)  A uniform stairstep pattern should be displayed. 
D)  It should be a circular Lissajous pattern resulting from the simultaneous application of ramps to the vertical and horizontal inputs of the oscilloscope.

Question 7

One disadvantage of the tracking A/D converter is ________.

Accepted Answer

A)  the need for an accurate clock reference for the counter 
B)  the binary output will oscillate between two binary states when the analog input is constant 
C)  the need for a latch and its associated control circuit 
D)  it requires two counters: one for up and one for down 
A)  the need for an accurate clock reference for the counter 
B)  the binary output will oscillate between two binary states when the analog input is constant 
C)  the need for a latch and its associated control circuit 
D)  it requires two counters: one for up and one for down

Question 8

The figure below represents a _________.

Accepted Answer

A)  tracking A/D converter 
B)  successive- approximation A/D converter 
C)  dual- approximation D/A comparator 
D)  dual- slope A/D converter 
A)  tracking A/D converter 
B)  successive- approximation A/D converter 
C)  dual- approximation D/A comparator 
D)  dual- slope A/D converter

Question 9

What type of op- amp circuit does not typically have a feedback path connected between its output and either of its input pins?

Accepted Answer

A)  A current multiplier 
B)  An open- loop amplifier 
C)  An inverter 
D)  A comparator 
A)  A current multiplier 
B)  An open- loop amplifier 
C)  An inverter 
D)  A comparator

Question 10

Digital Signal Processing is the processing of analog signals by conversion to digital form.

Accepted Answer

A) True 
 B)False

Question 11

What function is performed by the block labeled 'X' in the figure below?

Accepted Answer

A)  Power supply for the audio amplifier 
B)  Analog- to- digital conversion 
C)  Audio ON/OFF control 
D)  Digital- to- analog conversion 
A)  Power supply for the audio amplifier 
B)  Analog- to- digital conversion 
C)  Audio ON/OFF control 
D)  Digital- to- analog conversion

Question 12

The highest frequency component of the analog signal in an ADC is known as theD) packets.

Accepted Answer

A)  Shannon frequency 
B)  Nyquest frequency 
C)  Aliasing frequency 
D)  Sampling frequency 
A)  Shannon frequency 
B)  Nyquest frequency 
C)  Aliasing frequency 
D)  Sampling frequency

Question 13

Which of the equations below expresses the voltage gain relationship for an operational amplifier?

Accepted Answer

A)  Vout/Vin = - Rf/Rin 
B)  Vin/Vout = Rout/Rin 
C)  Vout = Vin/Av 
D)  Vout/Vin = Rout/Rin 
A)  Vout/Vin = - Rf/Rin 
B)  Vin/Vout = Rout/Rin 
C)  Vout = Vin/Av 
D)  Vout/Vin = Rout/Rin

Question 14

Sigma- Delta ADC utilizes ________.

Accepted Answer

A)  a one- bit quantization method 
B)  quantized difference between two samples 
C)  delta modulation 
D)  all of the above 
A)  a one- bit quantization method 
B)  quantized difference between two samples 
C)  delta modulation 
D)  all of the above

Question 15

What is the main disadvantage of the stairstep- ramp A/D converter?

Accepted Answer

A)  It requires a precision clock in order for the conversion to be reliable. 
B)  It requires a counter. 
C)  The counter must count up from zero at the beginning of each conversion sequence, so the conversion time varies with the input voltage. 
D)  All of the above are correct. 
A)  It requires a precision clock in order for the conversion to be reliable. 
B)  It requires a counter. 
C)  The counter must count up from zero at the beginning of each conversion sequence, so the conversion time varies with the input voltage. 
D)  All of the above are correct.

Question 16

An analog quantity varies from 0- 7 V and is input to a 6- bit A/D converter. What analog value is represented by each step on the digital output?

Accepted Answer

A)  0.109 V 
B)  0.111 V 
C)  0.857 V 
D)  1.17 V 
A)  0.109 V 
B)  0.111 V 
C)  0.857 V 
D)  1.17 V

Question 17

A digital- to- analog (D/A) converter changes data like temperature variations into digital quantities.

Accepted Answer

A) True 
 B)False

Question 18

An analog- to- digital converter (ADC) has a four- bit output. How many analog values can it represent?

Accepted Answer

A)  4 
B)  0.0625 
C)  1/4 
D)  16 
A)  4 
B)  0.0625 
C)  1/4 
D)  16

Question 19

When the analog input to a tracking A/D converter is at a constant level, the digital output will oscillate.

Accepted Answer

A) True 
 B)False

Question 20

DSP applications include ________.

Accepted Answer

A)  telecommunications 
B)  radar 
C)  speech generation 
D)  all of the above 
A)  telecommunications 
B)  radar 
C)  speech generation 
D)  all of the above

The DSP, unlike the general- purpose microprocessor, must typically process data in real time; that is, as it happens.

Quantization is performed by a(n) D) packets.

What advantage does the R/2R ladder DAC have over a binary- weighted- input DAC?

DSP applications include ________.

The main advantage that a tracking A/D converter has over a stairstep- ramp A/D converter is that it ________.

Refer to the figure below. What should the display on the scope look like if the A/D converter is working properly?

One disadvantage of the tracking A/D converter is ________.

The figure below represents a _________.

What type of op- amp circuit does not typically have a feedback path connected between its output and either of its input pins?

Digital Signal Processing is the processing of analog signals by conversion to digital form.

What function is performed by the block labeled 'X' in the figure below?

The highest frequency component of the analog signal in an ADC is known as theD) packets.

Which of the equations below expresses the voltage gain relationship for an operational amplifier?

Sigma- Delta ADC utilizes ________.

What is the main disadvantage of the stairstep- ramp A/D converter?

An analog quantity varies from 0- 7 V and is input to a 6- bit A/D converter. What analog value is represented by each step on the digital output?

A digital- to- analog (D/A) converter changes data like temperature variations into digital quantities.

An analog- to- digital converter (ADC) has a four- bit output. How many analog values can it represent?

When the analog input to a tracking A/D converter is at a constant level, the digital output will oscillate.

DSP applications include ________.

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Combinational Logic Analysis

Functions of Combinational Logic

Latches, Flip-Flops, and Timers

Shift Registers

Counters

Programmable Logic

Data Storage

Data Transmission

Data Processing and Control

Integrated Circuit Technologies

Filters

Exam 12: Signal Conversion and Processing

The DSP, unlike the general- purpose microprocessor, must typically process data in real time; that is, as it happens.

Quantization is performed by a(n) D) packets.

What advantage does the R/2R ladder DAC have over a binary- weighted- input DAC?

DSP applications include ________.

The main advantage that a tracking A/D converter has over a stairstep- ramp A/D converter is that it ________.

Refer to the figure below. What should the display on the scope look like if the A/D converter is working properly?

One disadvantage of the tracking A/D converter is ________.

The figure below represents a _________.

What type of op- amp circuit does not typically have a feedback path connected between its output and either of its input pins?

Digital Signal Processing is the processing of analog signals by conversion to digital form.

What function is performed by the block labeled 'X' in the figure below?

The highest frequency component of the analog signal in an ADC is known as theD) packets.

Which of the equations below expresses the voltage gain relationship for an operational amplifier?

Sigma- Delta ADC utilizes ________.

What is the main disadvantage of the stairstep- ramp A/D converter?

An analog quantity varies from 0- 7 V and is input to a 6- bit A/D converter. What analog value is represented by each step on the digital output?

A digital- to- analog (D/A) converter changes data like temperature variations into digital quantities.

An analog- to- digital converter (ADC) has a four- bit output. How many analog values can it represent?

When the analog input to a tracking A/D converter is at a constant level, the digital output will oscillate.

DSP applications include ________.

Introductory Concepts

Number Systems, Operations, and Codes

Logic Gates

Boolean Algebra and Logic Simplification

Combinational Logic Analysis

Functions of Combinational Logic

Latches, Flip-Flops, and Timers

Shift Registers

Counters

Programmable Logic

Data Storage

Data Transmission

Data Processing and Control

Integrated Circuit Technologies

Filters