125 free practice questions for this exam, each with the reason for the answer and where to look it up.
10 questions, graded as you go, with the reason for every answer. No sign-up.
| Exam | Auto maintenance and light repair (G1) |
|---|---|
| Who runs it | ASE |
| Where | United States |
Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.
A brake pedal feels soft and spongy. What is the most likely cause?
D. Air in the hydraulic system
Air compresses, so pedal travel is used up squeezing the air instead of applying the brakes, and the pedal feels springy. A failed booster gives the opposite feel: a hard pedal that needs high effort.
Reference: Brake pedal feel diagnosis; bleeding
Two 6-ohm resistors are connected in series across a 12-volt battery. How much current flows?
C. 1 amp
Series resistances add: 6 + 6 = 12 ohms, and 12 V / 12 ohms = 1 A. The answer 4 A comes from treating the resistors as if they were in parallel (3 ohms).
Reference: Ohm's law; series circuits
A cylinder reads low on a compression test. After a small amount of oil is squirted into the cylinder, the reading rises sharply. What does this indicate?
C. Worn piston rings or cylinder wall
The oil temporarily seals the gap between the rings and the cylinder wall, so a big rise on the wet test points to ring or cylinder wear. Oil cannot seal a leaking valve or head gasket, so those faults show little change.
Reference: Engine mechanical testing; wet compression test
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Engine repair (A1) · Suspension and steering (A4) · Brakes (A5) · Electrical / electronic systems (A6) · Heating and air conditioning (A7) · Engine performance (A8) · Light duty hybrid / electric vehicle specialist (L3) · Medium-heavy truck (T1 to T8) · Diesel mechanic fundamentals