Why data acquisition captures real-world measurements in SCADA systems - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to read a sensor value using the data acquisition system.

SCADA systems

sensor_value = daq.read([1])

Drag options to blanks, or click blank then click option'

Aread_sensor

Btemperature_sensor

Csensor_id

Doutput_value

Attempts:

3 left

💡 Hint

Common Mistakes

Using a function name instead of the sensor identifier.

Using a variable that does not represent the sensor.

The data acquisition system reads the sensor by its sensor_id, which identifies the real-world measurement source.

2fill in blank

medium

Complete the code to convert the raw data from the sensor to a real-world value.

SCADA systems

real_value = raw_data [1] calibration_factor

Drag options to blanks, or click blank then click option'

A*

B+

C-

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Adding or subtracting instead of multiplying.

Dividing which would reduce the value incorrectly.

The raw sensor data is multiplied by a calibration_factor to convert it into a meaningful real-world measurement.

3fill in blank

hard

Fix the error in the code that reads data from the sensor and stores it.

SCADA systems

data = daq.[1](sensor_id)

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Astore

Bwrite

Csend

Dread

Attempts:

3 left

💡 Hint

Common Mistakes

Using write or send which are for output.

Using store which is not a method to read data.

The correct method to get data from a sensor is read. Other methods like write or send are for output or commands.

4fill in blank

hard

Fill both blanks to create a dictionary that maps sensor names to their real-world values.

SCADA systems

sensor_data = {name: [1] for name, [2] in sensors.items()}

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Avalue * calibration

Bvalue

Ccalibration

Dsensor

Attempts:

3 left

💡 Hint

Common Mistakes

Using sensor instead of value in the loop.

Not multiplying by calibration factor.

Each sensor's raw value is multiplied by its calibration factor to get the real-world measurement.

5fill in blank

hard

Fill all three blanks to filter sensors with values above a threshold and convert them.

SCADA systems

filtered = {name: value[1]cal for name, value in data.items() if value [2] [3]

Drag options to blanks, or click blank then click option'

A*

B>

C10

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using addition instead of multiplication.

Using less than instead of greater than.

Using a wrong threshold value.

The code multiplies each value by cal and filters sensors where the value is greater than 10.