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Automotive Information Test Flashcards

7 cards from real ASVAB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Automotive Information Test flashcards as text

  1. What is the purpose of a catalytic converter's oxygen storage capacity?

    Answer: Buffer air/fuel ratio fluctuations to maintain efficient conversion

    The catalytic converter stores oxygen during lean conditions and releases it during rich conditions, smoothing out air/fuel variations to maintain optimal catalyst efficiency.

  2. A vehicle pulls to one side during braking. Which of the following is the MOST likely cause?

    Answer: A seized or sticking brake caliper on one side

    A seized caliper on one side applies more braking force to that wheel than the other, causing the vehicle to pull toward the side with greater braking force.

  3. What is engine displacement?

    Answer: The total volume swept by all pistons in one complete revolution

    Engine displacement is the total volume (in liters or cubic inches) swept by all pistons moving from BDC to TDC, commonly used to describe engine size.

  4. Which component in the charging system converts mechanical energy from the engine into electrical energy?

    Answer: Alternator

    The alternator is driven by a belt from the crankshaft and generates AC electricity, which is then rectified to DC to charge the battery and power vehicle systems.

  5. What does the term 'toe' refer to in wheel alignment?

    Answer: The inward or outward angle of the tires as viewed from above

    Toe describes whether the fronts of the tires point toward each other (toe-in) or away from each other (toe-out) when viewed from above, affecting tire wear and handling.

  6. What is the function of a vehicle's mass airflow (MAF) sensor?

    Answer: Measure the amount of air entering the engine to calculate fuel delivery

    The MAF sensor measures the mass of air flowing into the engine, allowing the ECU to calculate the correct amount of fuel to inject for the proper air/fuel ratio.

  7. Which type of differential allows each drive wheel to rotate at a different speed while still receiving torque?

    Answer: Open differential

    An open differential allows the two driven wheels to rotate at different speeds (needed when cornering) while still transmitting engine torque to both wheels.