SpaceTEC Core Exam Prep Free practice test →

Free SpaceTEC Core Practice Questions

10 free, exam-style SpaceTEC Certified Aerospace Technician Core (SpaceTEC Core) practice questions with answers and explanations. No signup required. Work through them below, then take the full free SpaceTEC Core practice test to study every exam domain.

The SpaceTEC Core exam has 70 questions and runs 1 hour 30 minutes.

These 10 free SpaceTEC Core questions are organized by exam domain, so you can see how each part of the SpaceTEC Certified Aerospace Technician Core blueprint is tested. Reveal the answer and explanation under each question.

Domain 1: Introduction to Aerospace 10% of exam

Question 1

A technician performs a final dimensional check on a finished bracket and records the results on the inspection report. This activity is an example of:

  1. Quality assurance
  2. Configuration management
  3. Quality control
  4. Process validation
Show answer & explanation

Correct answer: C - Quality control

Domain 2: Aerospace Safety 16% of exam

Question 2

An engineering team cannot eliminate or substitute a chemical hazard in a cleaning process. According to the hierarchy of controls, which measure is the LAST line of defense?

  1. Installing local exhaust ventilation at the source
  2. Enclosing the process behind a fixed engineering barrier
  3. Limiting each worker's daily exposure time by rotation
  4. Providing respirators and gloves to the workers
Show answer & explanation

Correct answer: D - Providing respirators and gloves to the workers

Question 3

A fire breaks out inside an energized electrical control panel. Which class of fire extinguisher is appropriate for this fire?

  1. Class A
  2. Class B
  3. Class C
  4. Class D
Show answer & explanation

Correct answer: C - Class C

Domain 3: Applied Mechanics 20% of exam

Question 4

A standard outside micrometer reads to a resolution of 0.001 inch. The sleeve (barrel) reads 0.250 inch and the thimble adds 14 thousandths. What is the measurement?

  1. 0.390 inch
  2. 0.264 inch
  3. 0.2514 inch
  4. 0.0264 inch
Show answer & explanation

Correct answer: B - 0.264 inch

Question 5

Compared with drilling a small hole in soft aluminum, drilling a large-diameter hole in a hard titanium alloy on a drill press requires the spindle speed (RPM) to be:

  1. Lower
  2. Higher
  3. Left unchanged from the aluminum setting
  4. Set to the machine's maximum to shorten cutting time
Show answer & explanation

Correct answer: A - Lower

Domain 4: Basic Electricity 14% of exam

Question 6

A 28-volt DC aircraft circuit supplies a component that has 7 ohms of resistance. Using Ohm's law, how much current flows in the circuit?

  1. 0.25 ampere
  2. 4 amperes
  3. 21 amperes
  4. 196 amperes
Show answer & explanation

Correct answer: B - 4 amperes

Domain 5: Materials and Processes I and II 20% of exam

Question 7

An aluminum panel is fastened directly to a stainless steel structure, and moisture collects in the joint. Over time the aluminum corrodes preferentially while the steel does not. This is an example of:

  1. Pitting corrosion
  2. Intergranular corrosion
  3. Stress-corrosion cracking
  4. Galvanic corrosion
Show answer & explanation

Correct answer: D - Galvanic corrosion

Question 8

During a wet lay-up composite repair, a technician seals a vacuum bag over the laminate before it cures. The PRIMARY purpose of vacuum bagging is to:

  1. Compact the plies and remove excess resin and air
  2. Raise the cure temperature of the resin during the cure cycle
  3. Add a glossy colored finish coat to the exposed surface
  4. Permanently bond the cured laminate to the mold surface
Show answer & explanation

Correct answer: A - Compact the plies and remove excess resin and air

Domain 6: Tests and Measurements 20% of exam

Question 9

A gauge produces five readings of the same part that fall very close to one another but are all consistently 0.010 inch larger than the part's true size. These readings are BEST described as:

  1. Accurate but not precise
  2. Precise but not accurate
  3. Both accurate and precise
  4. Neither accurate nor precise
Show answer & explanation

Correct answer: B - Precise but not accurate

Question 10

A technician must inspect a non-magnetic aluminum casting for a suspected internal void that does not break the surface. Which inspection method is MOST suitable?

  1. Ultrasonic testing
  2. Liquid penetrant testing
  3. Magnetic particle testing
  4. Visual testing
Show answer & explanation

Correct answer: A - Ultrasonic testing

Ready for the real thing?

Practice hundreds more SpaceTEC Core questions with instant scoring, weak-area drills, and full exam simulations.

Start the free practice test See pricing