Question 1

A transducer is a device that:

Accepted Answer

A)  converts a physical variable to an electrical variable. 
B)  controls a physical variable. 
C)  converts analog data to meaningful digital data. 
D)  stores digital data and then processes that data according to a set of specified instructions. 
A)  converts a physical variable to an electrical variable. 
B)  controls a physical variable. 
C)  converts analog data to meaningful digital data. 
D)  stores digital data and then processes that data according to a set of specified instructions. A

Question 2

Integrated ADCs can only have one input signal.

Accepted Answer

A) True 
 B)False  False

Question 3

Suppose that a 3- digit BCD digital- to- analog converter has a BCD input of 0100 1001 0111. Assuming the converter has a full- scale output of 49.95 mA, the output current will be:

Accepted Answer

A)  1.17 mA 
B)  11.17 mA 
C)  24.85 mA 
D)  49.84 mA 
A)  1.17 mA 
B)  11.17 mA 
C)  24.85 mA 
D)  49.84 mA C

Question 4

Increasing the number of subranging stages in a pipelined ADC increases the 	.

Accepted Answer

The answer of Increasing the number of subranging stages in...

Question 5

What is the greatest output current value from an 8- bit input DAC that has an output of 4.5 mA when the input binary number is 011010102?

Accepted Answer

A)  8.41 mA 
B)  10.83 mA 
C)  9.73 mA 
D)  4.37 mA 
A)  8.41 mA 
B)  10.83 mA 
C)  9.73 mA 
D)  4.37 mA

Question 6

Serial ADCs must have a built- in 	to convert the data to a bit stream.

Accepted Answer

parallel i

Question 7

Two principal advantages of the Dual- Slope ADC are its:

Accepted Answer

A)  low sensitivity to noise and high speed. 
B)  high sensitivity to noise and low cost. 
C)  low sensitivity to noise and low cost. 
D)  high speed and low cost. 
A)  low sensitivity to noise and high speed. 
B)  high sensitivity to noise and low cost. 
C)  low sensitivity to noise and low cost. 
D)  high speed and low cost.

Question 8

R/2R ladder DACs use successive resistors, each having a value of 2 times the resistor preceding it.

Accepted Answer

A) True 
 B)False

Question 9

A DAC is monotonic if its output:

Accepted Answer

A)  increases and decreases as the binary input increases from one input to the next. 
B)  decreases as the binary input increases from one value to the next. 
C)  increases as the binary input increases from one value to the next. 
D)  increases and decreases as the binary input decreases from one input to the next. 
A)  increases and decreases as the binary input increases from one input to the next. 
B)  decreases as the binary input increases from one value to the next. 
C)  increases as the binary input increases from one value to the next. 
D)  increases and decreases as the binary input decreases from one input to the next.

Question 10

Analog to digital conversion incorporates D/A conversion as a primary component.

Accepted Answer

A) True 
 B)False

Question 11

The 	block is used to capture a changing analog signal in a data acquisition system.

Accepted Answer

The answer of The 	block is used to capture a...

Question 12

Successive approximation analog/digital counters have:

Accepted Answer

A)  shorter conversion time than digital ramp ADCs. 
B)  increased resolution than DR ADL. 
C)  weighted value type appropriation circuitry. 
D)  Both A and C 
A)  shorter conversion time than digital ramp ADCs. 
B)  increased resolution than DR ADL. 
C)  weighted value type appropriation circuitry. 
D)  Both A and C

Question 13

One purpose of the comparator in a digital- ramp ADC is to:

Accepted Answer

A)  enable the control unit as long as Vax is less than Va. 
B)  staircase the input analog for comparison with Vax. 
C)  enable the control unit as long as Vax is greater than Va. 
D)  generate clock pulses to up- count the binary counter. 
A)  enable the control unit as long as Vax is less than Va. 
B)  staircase the input analog for comparison with Vax. 
C)  enable the control unit as long as Vax is greater than Va. 
D)  generate clock pulses to up- count the binary counter.

Question 14

The time between start and EOC is called 	time in a DAC.

Accepted Answer

The answer of The time between start and EOC is...

Question 15

A technician is wiring a circuit that requires a DAC. Two DAC's are available with the proper full- scale output. His requirements are for small resolution values and precision in the analog output. Generally, the DAC with the 	step size and the 	percent of resolution should be selected.

Accepted Answer

A)  largest, smallest 
B)  largest, largest 
C)  smallest, largest 
D)  smallest, smallest 
A)  largest, smallest 
B)  largest, largest 
C)  smallest, largest 
D)  smallest, smallest

Question 16

The analog signal from a DAC is often connected to some device or circuit that serves as a(n) 	to control the physical variable.

Accepted Answer

The answer of The analog signal from a DAC is...

Question 17

Suppose that a certain 8- bit DAC has a full- scale output of 12 V and a full- scale error of 0.5%. What is the range of possible outputs for an input of 101101012?

Accepted Answer

A)  7.63 V - 8.51 V 
B)  8.46 V - 8.58 V 
C)  7.47 V - 7.59 V 
D)  8.47 V - 8.59 V 
A)  7.63 V - 8.51 V 
B)  8.46 V - 8.58 V 
C)  7.47 V - 7.59 V 
D)  8.47 V - 8.59 V

Question 18

When the sampled voltage equals the digital sample equivalent, the 	output is enabled by an op- amp comparator.

Accepted Answer

The answer of When the sampled voltage equals the digital...

Question 19

A 6- bit DAC has 	possible analog steps.

Accepted Answer

The answer of A 6- bit DAC has 	possible analog...

Question 20

An actuator is usually a device that:

Accepted Answer

A)  converts a physical variable to an electrical variable. 
B)  converts analog data to meaningful digital data. 
C)  stores digital data and then processes that data according to a set of specified instructions. 
D)  controls a physical variable. 
A)  converts a physical variable to an electrical variable. 
B)  converts analog data to meaningful digital data. 
C)  stores digital data and then processes that data according to a set of specified instructions. 
D)  controls a physical variable.

A transducer is a device that:

Integrated ADCs can only have one input signal.

Suppose that a 3- digit BCD digital- to- analog converter has a BCD input of 0100 1001 0111. Assuming the converter has a full- scale output of 49.95 mA, the output current will be:

Increasing the number of subranging stages in a pipelined ADC increases the .

What is the greatest output current value from an 8- bit input DAC that has an output of 4.5 mA when the input binary number is 01101010₂?

Serial ADCs must have a built- in to convert the data to a bit stream.

Two principal advantages of the Dual- Slope ADC are its:

R/2R ladder DACs use successive resistors, each having a value of 2 times the resistor preceding it.

A DAC is monotonic if its output:

Analog to digital conversion incorporates D/A conversion as a primary component.

The block is used to capture a changing analog signal in a data acquisition system.

Successive approximation analog/digital counters have:

One purpose of the comparator in a digital- ramp ADC is to:

The time between start and EOC is called time in a DAC.

A technician is wiring a circuit that requires a DAC. Two DAC's are available with the proper full- scale output. His requirements are for small resolution values and precision in the analog output. Generally, the DAC with the step size and the percent of resolution should be selected.

The analog signal from a DAC is often connected to some device or circuit that serves as a(n) to control the physical variable.

Suppose that a certain 8- bit DAC has a full- scale output of 12 V and a full- scale error of 0.5%. What is the range of possible outputs for an input of 10110101₂?

When the sampled voltage equals the digital sample equivalent, the output is enabled by an op- amp comparator.

A 6- bit DAC has possible analog steps.

An actuator is usually a device that:

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

A transducer is a device that:

Integrated ADCs can only have one input signal.

Suppose that a 3- digit BCD digital- to- analog converter has a BCD input of 0100 1001 0111. Assuming the converter has a full- scale output of 49.95 mA, the output current will be:

Increasing the number of subranging stages in a pipelined ADC increases the .

What is the greatest output current value from an 8- bit input DAC that has an output of 4.5 mA when the input binary number is 011010102?

Serial ADCs must have a built- in to convert the data to a bit stream.

Two principal advantages of the Dual- Slope ADC are its:

R/2R ladder DACs use successive resistors, each having a value of 2 times the resistor preceding it.

A DAC is monotonic if its output:

Analog to digital conversion incorporates D/A conversion as a primary component.

The block is used to capture a changing analog signal in a data acquisition system.

Successive approximation analog/digital counters have:

One purpose of the comparator in a digital- ramp ADC is to:

The time between start and EOC is called time in a DAC.

A technician is wiring a circuit that requires a DAC. Two DAC's are available with the proper full- scale output. His requirements are for small resolution values and precision in the analog output. Generally, the DAC with the step size and the percent of resolution should be selected.

The analog signal from a DAC is often connected to some device or circuit that serves as a(n) to control the physical variable.

Suppose that a certain 8- bit DAC has a full- scale output of 12 V and a full- scale error of 0.5%. What is the range of possible outputs for an input of 101101012?

When the sampled voltage equals the digital sample equivalent, the output is enabled by an op- amp comparator.

A 6- bit DAC has possible analog steps.

An actuator is usually a device that:

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

What is the greatest output current value from an 8- bit input DAC that has an output of 4.5 mA when the input binary number is 01101010₂?

Suppose that a certain 8- bit DAC has a full- scale output of 12 V and a full- scale error of 0.5%. What is the range of possible outputs for an input of 10110101₂?