A technician is reading a schematic for a sensor circuit. The sensor outputs a signal between 0 and 50 mV. The microcontroller's analog-to-digital converter (ADC) accepts input from 0 to 5 V. What must the technician do to interface the sensor with the microcontroller?

Reduce the ADC's input range to 50 mV using a resistor divider

Amplify the sensor signal before connecting it to the ADC

Convert the sensor's millivolts to amperes before connecting

Connect the sensor directly; the ADC will read the millivolt signal

CompTIATech+

Domain 1Objective 3

Units of Measure FC0-U71 Practice Questions (Page 4)

Part of the Tech concepts and terminology domain, which accounts for 13% of the FC0-U71 exam. CompTIA does not publish an official question count, but from its 60-minute exam (~25–40 total, ~3–5 in this domain), expect 1–1 from this objective — we provide 26 practice questions to prepare you well beyond it. (estimate)

26questions here

6free pages

8concepts

13%of the exam

Questions 16–20

16application · medium
A technician is reading a schematic for a sensor circuit. The sensor outputs a signal between 0 and 50 mV. The microcontroller's analog-to-digital converter (ADC) accepts input from 0 to 5 V. What must the technician do to interface the sensor with the microcontroller?
Select an answer first
17foundation · easy
A smartphone battery is rated at 3.7 volts. How many millivolts is that?
Select an answer first
18foundation · easy
Which unit is used to measure the clock speed of a computer processor?
Select an answer first
19foundation · easy
What unit is used to measure the electrical potential difference in a circuit?
Select an answer first
20foundation · easy
What unit is used to measure energy?
Select an answer first

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Units of Measure FC0-U71 Practice Questions (Page 4)

Questions 16–20

A technician is reading a schematic for a sensor circuit. The sensor outputs a signal between 0 and 50 mV. The microcontroller's analog-to-digital converter (ADC) accepts input from 0 to 5 V. What must the technician do to interface the sensor with the microcontroller?

A smartphone battery is rated at 3.7 volts. How many millivolts is that?

Which unit is used to measure the clock speed of a computer processor?

What unit is used to measure the electrical potential difference in a circuit?

What unit is used to measure energy?

Keep studying — Tech concepts and terminology