Question 1

The output error of an ADC is obtained by:

Accepted Answer

A)  subtracting the quantization error from the full- scale error. 
B)  adding the full- scale error to the quantization error. 
C)  subtracting the full- scale error from the quantization error. 
A)  subtracting the quantization error from the full- scale error. 
B)  adding the full- scale error to the quantization error. 
C)  subtracting the full- scale error from the quantization error.

Question 2

Offset error is really a component of any given particular circuit at zero volts and can normally be adjusted back to zero.

Accepted Answer

A) True 
 B)False

Question 3

The three types of ADCs that do not use a DAC as part of the conversion process are:

Accepted Answer

A)  flash ADC, digital- ramp ADC, and dual- slope ADC. 
B)  successive- approximation ADC, digital- ramp ADC, and dual- slope ADC. 
C)  flash ADC, voltage- to- frequency ADC, and dual- slope ADC. 
D)  digital- ramp ADC, tracking ADC, and dual- slope ADC. 
A)  flash ADC, digital- ramp ADC, and dual- slope ADC. 
B)  successive- approximation ADC, digital- ramp ADC, and dual- slope ADC. 
C)  flash ADC, voltage- to- frequency ADC, and dual- slope ADC. 
D)  digital- ramp ADC, tracking ADC, and dual- slope ADC.

Question 4

Two ways to determine the output of a BCD digital- to- analog converter are to:

Accepted Answer

A)  divide the full scale output value by the BCD weights of all bits that are 1s, or determine the decimal value for each BCD code group and multiply that value by the step size. 
B)  sum the straight binary weights of the input bits that are 1s, or determine the decimal value of the inputs and multiply this value by the step size. 
C)  sum the BCD weights of all bits that are 1s, or add the decimal value for each BCD code group and multiply that value by the step size. 
D)  divide the straight binary weights of the input bits that are 1s by the full scale value, or determine the decimal value of the inputs and multiply that value by the step size. 
A)  divide the full scale output value by the BCD weights of all bits that are 1s, or determine the decimal value for each BCD code group and multiply that value by the step size. 
B)  sum the straight binary weights of the input bits that are 1s, or determine the decimal value of the inputs and multiply this value by the step size. 
C)  sum the BCD weights of all bits that are 1s, or add the decimal value for each BCD code group and multiply that value by the step size. 
D)  divide the straight binary weights of the input bits that are 1s by the full scale value, or determine the decimal value of the inputs and multiply that value by the step size.

Question 5

Digital voltmeters need an ADC with a very fast conversion time.

Accepted Answer

A) True 
 B)False

Question 6

Digital quantities have values that are specified as 1 or 0, HIGH or LOW, etc. The voltage values associated with these digital quantities fall within specified limits. On the other hand, analog values for physical process control may be any value over a wide range of values, with each different value having a different meaning. As a result:

Accepted Answer

A)  digital computers that monitor or control analog physical values must have an accurate means of transforming analog data to meaningful digital data and vice- versa. 
B)  digital computers are unable to monitor or control physical analog operations with any degree of accuracy or certainty. 
C)  digital computers have the capability to monitor only those analog physical operations that fall within the specified ranges of digital HIGH and LOW voltage levels. 
D)  digital computers are unable to monitor analog physical values regardless of the interfacing techniques used to make the two systems compatible. 
A)  digital computers that monitor or control analog physical values must have an accurate means of transforming analog data to meaningful digital data and vice- versa. 
B)  digital computers are unable to monitor or control physical analog operations with any degree of accuracy or certainty. 
C)  digital computers have the capability to monitor only those analog physical operations that fall within the specified ranges of digital HIGH and LOW voltage levels. 
D)  digital computers are unable to monitor analog physical values regardless of the interfacing techniques used to make the two systems compatible.

Question 7

The static accuracy test is the normal procedure used to test the monotonicity of a DAC.

Accepted Answer

A) True 
 B)False

Question 8

A(n) 	converts an analog input to a digital output.

Accepted Answer

The answer of A(n) 	converts an analog input to a...

Question 9

Undersampling yields 	_ signals, which do not reflect the actual sampled waveform.

Accepted Answer

The answer of Undersampling yields 	_ signals, which do not...

Question 10

Generally speaking, DACs with current outputs have a shorter settling time than those with voltage outputs.

Accepted Answer

A) True 
 B)False

Question 11

D/A conversion accuracy is dependent on resistor precision and input voltage levels.

Accepted Answer

A) True 
 B)False

Question 12

A digital- to- analog converter (DAC):

Accepted Answer

A)  converts the analog input from a transducer or some other device to a representative digital input for a computer or some other digital device. 
B)  converts the digital output of a computer to a corresponding analog representation, usually voltage or current. 
C)  monitors the digital representation of an analog value during the computer's program execution. 
D)  converters a digital value to a representative physical analog value such as pressure or temperature. 
A)  converts the analog input from a transducer or some other device to a representative digital input for a computer or some other digital device. 
B)  converts the digital output of a computer to a corresponding analog representation, usually voltage or current. 
C)  monitors the digital representation of an analog value during the computer's program execution. 
D)  converters a digital value to a representative physical analog value such as pressure or temperature.

Question 13

The full- scale output for an 8- bit digital- to- analog converter would be reached when the binary input number equals 12810.

Accepted Answer

A) True 
 B)False

Question 14

A particular tachometer displays engine RPMs from zero to 10,000. If the ADC accepts voltage levels from zero to five volts, in order to achieve full- scale representations from the tachometer, what should the output voltage be at 8500 RPM?

Accepted Answer

A)  5 volts 
B)  4.8 volts 
C)  3.2 volts 
D)  4.25 volts 
A)  5 volts 
B)  4.8 volts 
C)  3.2 volts 
D)  4.25 volts

Question 15

Signal aliasing occurs when sampling frequency is 10× the highest input signal frequency or higher.

Accepted Answer

A) True 
 B)False

Question 16

Sample and Hold acquisition time depends on the value of Ch.

Accepted Answer

A) True 
 B)False

Question 17

An A/D converter has a binary input of 0010 and an analog output of 20 mV. What is the resolution?

Accepted Answer

A)  100 mV 
B)  20 mV 
C)  1 mV 
D)  10 mV 
A)  100 mV 
B)  20 mV 
C)  1 mV 
D)  10 mV

Question 18

Step size and proportionality factors are one and the same in the DAC input/output relationship.

Accepted Answer

A) True 
 B)False

Question 19

A Sample and Hold circuit's acquisition time is dependent upon:

Accepted Answer

A)  voltage Vo. 
B)  the output impedance of A1. 
C)  the digital control circuitry. 
D)  the value of Ch. 
A)  voltage Vo. 
B)  the output impedance of A1. 
C)  the digital control circuitry. 
D)  the value of Ch.

Question 20

Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.

Accepted Answer

A) True 
 B)False

The output error of an ADC is obtained by:

Offset error is really a component of any given particular circuit at zero volts and can normally be adjusted back to zero.

The three types of ADCs that do not use a DAC as part of the conversion process are:

Two ways to determine the output of a BCD digital- to- analog converter are to:

Digital voltmeters need an ADC with a very fast conversion time.

The static accuracy test is the normal procedure used to test the monotonicity of a DAC.

A(n) converts an analog input to a digital output.

Undersampling yields _ signals, which do not reflect the actual sampled waveform.

Generally speaking, DACs with current outputs have a shorter settling time than those with voltage outputs.

D/A conversion accuracy is dependent on resistor precision and input voltage levels.

A digital- to- analog converter (DAC):

The full- scale output for an 8- bit digital- to- analog converter would be reached when the binary input number equals 128₁₀.

A particular tachometer displays engine RPMs from zero to 10,000. If the ADC accepts voltage levels from zero to five volts, in order to achieve full- scale representations from the tachometer, what should the output voltage be at 8500 RPM?

Signal aliasing occurs when sampling frequency is 10× the highest input signal frequency or higher.

Sample and Hold acquisition time depends on the value of C_h.

An A/D converter has a binary input of 0010 and an analog output of 20 mV. What is the resolution?

Step size and proportionality factors are one and the same in the DAC input/output relationship.

A Sample and Hold circuit's acquisition time is dependent upon:

Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.

Introductory Concepts

Number Systems and Codes

Describing Logic Circuits

Combinational Logic Circuits

Flip-Flops and Related Devices

Digital Arithmetic: Operations and Circuits

Counters and Registers

Integrated-Circuit Logic Families

MSI Logic Circuits

Digital System Projects Using HDL

Memory Devices

Programmable Logic Device Architectures

Filters

Exam 11: Interfacing With the Analog World

The output error of an ADC is obtained by:

Offset error is really a component of any given particular circuit at zero volts and can normally be adjusted back to zero.

The three types of ADCs that do not use a DAC as part of the conversion process are:

Two ways to determine the output of a BCD digital- to- analog converter are to:

Digital voltmeters need an ADC with a very fast conversion time.

The static accuracy test is the normal procedure used to test the monotonicity of a DAC.

A(n) converts an analog input to a digital output.

Undersampling yields _ signals, which do not reflect the actual sampled waveform.

Generally speaking, DACs with current outputs have a shorter settling time than those with voltage outputs.

D/A conversion accuracy is dependent on resistor precision and input voltage levels.

A digital- to- analog converter (DAC):

The full- scale output for an 8- bit digital- to- analog converter would be reached when the binary input number equals 12810.

A particular tachometer displays engine RPMs from zero to 10,000. If the ADC accepts voltage levels from zero to five volts, in order to achieve full- scale representations from the tachometer, what should the output voltage be at 8500 RPM?

Signal aliasing occurs when sampling frequency is 10× the highest input signal frequency or higher.

Sample and Hold acquisition time depends on the value of Ch.

An A/D converter has a binary input of 0010 and an analog output of 20 mV. What is the resolution?

Step size and proportionality factors are one and the same in the DAC input/output relationship.

A Sample and Hold circuit's acquisition time is dependent upon:

Resolution in the analog output of a DAC is primarily dependent on the number of input binary bits.

Introductory Concepts

Number Systems and Codes

Describing Logic Circuits

Combinational Logic Circuits

Flip-Flops and Related Devices

Digital Arithmetic: Operations and Circuits

Counters and Registers

Integrated-Circuit Logic Families

MSI Logic Circuits

Digital System Projects Using HDL

Memory Devices

Programmable Logic Device Architectures

Filters

The full- scale output for an 8- bit digital- to- analog converter would be reached when the binary input number equals 128₁₀.

Sample and Hold acquisition time depends on the value of C_h.