Praxis Technology and Engineering Education Practice Test
Technology and engineering education connects design thinking with applied knowledge of materials, manufacturing, electronics, measurement, and energy systems. Practice questions sample decisions such as choosing a production method, measuring circuit behavior, interpreting sensor signals, and testing a prototype. The subject also calls for reasoning about how product choices affect performance, usability, and material recovery.
Exam overview
About the Praxis Technology and Engineering Education Exam
The sampled problems involve applying technical principles to classroom and workshop scenarios. Electronics questions include analog-to-digital conversion, circuit measurement, logic gates, soldering flux, and reversing a DC motor. Manufacturing tasks call for matching processes and machine tools to the workpiece and production volume, such as forming repeated sheet-metal parts or finishing a flat metal surface. Design and testing questions require isolating variables in an experiment, comparing prototype performance, and selecting materials or construction choices that support a stated goal. Together, these tasks draw on measurement, troubleshooting, process selection, and evidence-based design decisions—the kinds of reasoning used to guide students through making and evaluating technological solutions.
Sample Practice Questions
Review a selection from this exam's published US Practice Tests practice bank.
A sensor produces an analog voltage that changes continuously with temperature, but a microcontroller can process only digital values. Which component converts the sensor voltage into a numerical value for the controller?
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Correct answer: BAn analog-to-digital converter samples an analog voltage and represents it as a digital number that a microcontroller can process. A digital-to-analog converter performs the reverse conversion.
A student wants a DC motor to run in the opposite direction without changing the motor itself. In a basic circuit, what change will reverse its rotation?
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Correct answer: AReversing the polarity reverses the current through a simple brushed DC motor’s armature, which reverses the direction of the magnetic force and motor rotation.
A student is making a transparent prototype cover and wants to compare how much visible light different samples transmit. Which instrument is most appropriate for measuring light transmittance quantitatively?
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Correct answer: AA spectrophotometer measures how much light a sample absorbs or transmits, often at selected wavelengths. An anemometer measures air speed, a torque wrench measures torque, and a hygrometer measures humidity.
A student is soldering an electronic component onto a circuit board. What is the main purpose of applying flux to the joint?
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Correct answer: AFlux helps clean metal surfaces and limit oxidation during heating, allowing molten solder to wet and bond to the surfaces more effectively. It does not serve as the joint's electrical insulation.
In a digital logic circuit, an AND gate has two inputs. Under which condition is its output HIGH?
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Correct answer: CAn AND gate outputs HIGH only when every input is HIGH. For two inputs, the output is therefore HIGH only for the input combination HIGH and HIGH.
A school workshop must choose a method for producing hundreds of identical flat brackets from sheet metal. Which process is generally well suited to high-volume production of the same outline?
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Correct answer: BA punch and die can rapidly cut repeated shapes from sheet metal, making the process suitable for high-volume production. Hand filing is slow, sand casting is for forming molten material, and a lathe is primarily used for rotational workpieces.
A student uses a digital multimeter to check the voltage across a powered component. How should the meter be connected for this measurement?
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Correct answer: AVoltage is the potential difference between two points, so a voltmeter is connected across the component in parallel. A multimeter set to measure current is instead placed in series.
How to use this practice test
Access is free. A session draws up to 20 random questions from the available bank of 50 and displays results afterward. Use the questions to check how well you apply technical concepts to practical situations; review any missed items by identifying the governing principle, such as circuit connections, manufacturing suitability, or experimental controls.
Preparation tips
- Sketch simple circuits and practice identifying how meter placement, polarity, logic inputs, and motor-terminal reversal affect measurements or operation.
- Compare manufacturing processes by production volume, workpiece geometry, material, and the finish required.
- For prototype tests, name the independent variable, outcome measure, and conditions that must stay constant.
- Review how common instruments measure electrical quantities, light transmission, and dimensional or surface properties.