Electronics Maintenance

What is the purpose of flux in soldering?

• To remove oxidation from metal surfaces and allow solder to flow and bond properly.

• To create a stronger bond between the metal surfaces

• To add color to the solder joint

• To increase the melting point of the solder

Name one common type of testing equipment used in electronics maintenance.

• Multimeter

• Logic analyzer

• Oscilloscope

• Function generator

How can a broken trace on a circuit board be repaired?

• Ignore the broken trace and hope for the best

• Pour water on the circuit board

• Carefully scrape off insulation, solder a wire to bridge the gap, and insulate the repair.

• Use a hammer to fix the trace

What is the function of a diode in an electronic circuit?

• To regulate voltage in AC circuits

• To allow current flow in one direction while blocking it in the opposite direction.

• To amplify signals in both directions

• To store excess charge in capacitors

Explain how to use a multimeter to measure resistance.

• Read the resistance value from the battery

• To measure resistance using a multimeter, set it to the resistance measurement mode, connect the probes to the resistor leads, and read the resistance value displayed on the multimeter.

• Connect the probes to a power source

• Set the multimeter to voltage measurement mode

What is the first step in troubleshooting an electronic device that is not powering on?

• Reset the device to factory settings

• Check the weather forecast

• Replace the battery

• Check the power source and connections

What is the role of a capacitor in an electronic circuit?

• A capacitor converts digital signals in electronic circuits.

• A capacitor regulates voltage in electronic circuits.

• A capacitor amplifies signals in electronic circuits.

• A capacitor stores and releases electrical energy in electronic circuits.

Describe one method for identifying electronic components on a circuit board.

• Listening to the components

• Tasting the components

• Smelling the components

• Reading the labels or markings on the components

When should you use the continuity test function on a multimeter?

• When testing resistance

• When checking battery level

• When checking for circuit continuity.

• When measuring voltage

What is the purpose of desoldering braid in electronics work?

• To increase the temperature of the soldering iron

• To clean the surface of electronic components

• To remove excess solder from electronic components or circuit boards.

• To add more solder to the circuit boards