IoT Actuators Quiz

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What is the role of actuators in an IoT system?

They provide input to the system

They perform direct actions upon the physical world (correct)

They control the algorithms in the system

They manage the communication within the system

How are digital actuators usually managed?

By producing continuous signals

By controlling the speed of a motor

By converting analog signals

By writing values to actuator output registers (correct)

What is the purpose of a digital-to-analog (DAC) converter circuitry in an IoT system?

To convert analog values to digital signals

To produce continuous signals

To implement control actions

To convert digital values into corresponding analog output signals (correct)

How do analog actuators typically produce signals in an IoT system?

By converting digital values to analog signals Signup and view all the answers

What role does pulse-width modulation (PWM) play in digital output actuation?

It provides a series of control pulses of variable duration Signup and view all the answers

In what way can actuators generate timed control pulses individually or in series?

By having an output signal with programmatically controlled on and off states Signup and view all the answers

What type of outputs do integrated sensors usually produce?

Digitized outputs communicated via wired serial buses Signup and view all the answers

What components are required for stand-alone sensor assemblies using wireless communication?

Radios, modems, and communication software Signup and view all the answers

What do raw transducer outputs typically come in the form of?

Voltage or current signals that vary in proportion to the stimulus Signup and view all the answers

What is often needed for analog signals to be read programmatically by the receiving entity?

Analog-to-digital converter (ADC) circuit Signup and view all the answers

What are smart sensors designed to support as a design choice?

Standard protocols and connection to any suitable level of hierarchy in IoT systems Signup and view all the answers

What is used to convert digitized values to engineering units for use by the rest of the IoT system?

Post processing Signup and view all the answers

What is used to reduce the number of signal traces especially for natively analog measurements?

Wired serial buses such as I2C or SPI Signup and view all the answers

What type of connection do some sensors, such as smart home thermostats, have the additional ability to connect to?

'Internet connection via home Wi-Fi connection' Signup and view all the answers

What is the primary function of a sensor in an IoT system?

To convert physical stimuli to a processable output Signup and view all the answers

In what formats do sensor-produced signals come?

Analog and digital Signup and view all the answers

What is the role of actuators in an IoT system?

To generate control pulses Signup and view all the answers

What type of inputs should be included in the definition of IoT sensing?

Human inputs and observations on the physical world Signup and view all the answers

What do sensors and devices containing them vary widely in terms of?

Their functions, processing power, and connectivity Signup and view all the answers

Which component is required for stand-alone sensor assemblies using wireless communication?

Bluetooth connectivity chip Signup and view all the answers

What type of error is produced when digitizing analog values into a limited range of digital numbers?

Quantization error Signup and view all the answers

What is the role of an analog-to-digital converter (ADC) circuit in the sensor data processing?

To sample and convert the input signal into its corresponding digital value Signup and view all the answers

What determines the accuracy of the result in the digitization of analog values?

ADC resolution defined by its number of bits Signup and view all the answers

What does the sampling frequency determine in the acquisition of fast-changing input signals?

The rate of taking measurements Signup and view all the answers

What do raw transducer outputs typically come in the form of?

Voltage or current signals Signup and view all the answers

What role does signal conditioning and amplification circuitry play in sensor data processing?

Matching the range of signals to their terminating points and interfaces Signup and view all the answers

What happens when continuous analog values are represented by a limited range of digital numbers?

Quantization error is produced Signup and view all the answers

What is necessary for analog signals to be brought to the appropriate system interface point for further processing?

Signal conditioning and amplification circuitry Signup and view all the answers

What determines how many bits in the digital output code represent useful information in an ADC?

Internal circuitry and noise from external sources connected to the ADC input Signup and view all the answers

What is needed for digital signal inputs to be read programmatically by the receiving entity?

Conversion to 0 or 1 value in the corresponding input register Signup and view all the answers

IoT Actuators Quiz

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Questions and Answers

What is the role of actuators in an IoT system?

How are digital actuators usually managed?

What is the purpose of a digital-to-analog (DAC) converter circuitry in an IoT system?

How do analog actuators typically produce signals in an IoT system?

What role does pulse-width modulation (PWM) play in digital output actuation?

In what way can actuators generate timed control pulses individually or in series?

What type of outputs do integrated sensors usually produce?

What components are required for stand-alone sensor assemblies using wireless communication?

What do raw transducer outputs typically come in the form of?

What is often needed for analog signals to be read programmatically by the receiving entity?

What are smart sensors designed to support as a design choice?

What is used to convert digitized values to engineering units for use by the rest of the IoT system?

What is used to reduce the number of signal traces especially for natively analog measurements?

What type of connection do some sensors, such as smart home thermostats, have the additional ability to connect to?

What is the primary function of a sensor in an IoT system?

In what formats do sensor-produced signals come?

What is the role of actuators in an IoT system?

What type of inputs should be included in the definition of IoT sensing?

What do sensors and devices containing them vary widely in terms of?

Which component is required for stand-alone sensor assemblies using wireless communication?

What type of error is produced when digitizing analog values into a limited range of digital numbers?

What is the role of an analog-to-digital converter (ADC) circuit in the sensor data processing?

What determines the accuracy of the result in the digitization of analog values?

What does the sampling frequency determine in the acquisition of fast-changing input signals?

What do raw transducer outputs typically come in the form of?

What role does signal conditioning and amplification circuitry play in sensor data processing?

What happens when continuous analog values are represented by a limited range of digital numbers?

What is necessary for analog signals to be brought to the appropriate system interface point for further processing?

What determines how many bits in the digital output code represent useful information in an ADC?

What is needed for digital signal inputs to be read programmatically by the receiving entity?

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