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
What is the purpose of a vehicle's PCV (Positive Crankcase Ventilation) valve?
Answer: Vent crankcase gases back into the intake manifold
The PCV valve routes blowby gases from the crankcase back into the intake manifold to be burned, reducing emissions and preventing oil contamination.
Which type of valve spring arrangement uses two concentric springs in a single valve?
Answer: Dual-coil spring
A dual-coil (or dual) spring setup uses an inner and outer coil spring together to prevent valve float at high RPM and provide redundancy.
What component prevents the transmission from engaging when the parking brake is not set on vehicles equipped with a brake-transmission shift interlock?
Answer: Shift interlock solenoid
The shift interlock solenoid physically locks the gear selector in Park unless the brake pedal is depressed, preventing accidental gear engagement.
In a disc brake system, what is the function of the caliper piston dust boot?
Answer: Keep contaminants out of the piston bore
The dust boot is a rubber seal that covers the caliper piston to prevent dirt, moisture, and road debris from entering the piston bore and causing corrosion.
What does a vehicle's OBD-II system primarily monitor?
Answer: Emission-related engine and drivetrain components
OBD-II (On-Board Diagnostics II) continuously monitors emission-related systems such as the engine, transmission, and exhaust to detect malfunctions and store fault codes.
Which engine component seals combustion gases from entering the cooling system between the engine block and cylinder head?
Answer: Head gasket
The head gasket seals the mating surfaces between the cylinder head and engine block, preventing combustion gases, coolant, and oil from mixing.
What is the role of the throwout bearing (release bearing) in a manual transmission vehicle?
Answer: Disengage the clutch when the pedal is pressed
The throwout bearing contacts the clutch pressure plate fingers when the clutch pedal is depressed, releasing clutch pressure and disconnecting engine power from the transmission.