Automotive Mechanic Terms

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Instructions: Rev up your knowledge with this quiz about the vocabulary used by auto mechanics and technicians.

1.
What is a 'catalytic converter'?
A
A device that converts gas to electric power
B
A part of the fuel injection system
C
A type of car battery
D
An exhaust system component that reduces harmful emissions by converting toxic gases into less harmful substances
2.
What does 'alignment' refer to in auto repair?
A
Adjusting the angles of the wheels so they are set to the manufacturer's specifications for optimal handling
B
Arranging tools in the shop
C
Connecting the engine to the transmission
D
Lining up cars in a parking lot
3.
What is a 'timing belt'?
A
A speedometer component
B
A seat belt timer
C
A belt that synchronizes the rotation of the crankshaft and camshaft so engine valves open and close at the proper times
D
A belt worn by racing drivers
4.
What does 'torque' mean in automotive terms?
A
The weight of the engine
B
The top speed of a vehicle
C
The total horsepower
D
A rotational force that measures an engine's twisting power
5.
What is a 'differential' in a vehicle?
A
A type of brake system
B
The price difference between repairs
C
A gear assembly that allows the drive wheels to rotate at different speeds, especially when turning
D
The difference between two car models
6.
What does 'OBD' stand for?
A
Overhead Belt Drive
B
On-Board Diagnostics
C
Outer Body Damage
D
Original Brake Design
7.
What is the 'alternator' responsible for?
A
Alternating between gears
B
Generating electrical power to charge the battery and power the vehicle's electrical systems while the engine runs
C
Managing the turn signals
D
Controlling the air conditioning
8.
What does 'camber' refer to in wheel alignment?
A
The direction the wheels point
B
The rotation speed of the tires
C
The inward or outward tilt of the wheel when viewed from the front of the vehicle
D
The distance between the front wheels
9.
What is a 'head gasket'?
A
A gasket on the gas cap
B
A rubber seal around the headlights
C
The top cover of the engine
D
A seal between the engine block and cylinder head that prevents oil and coolant from mixing
10.
What does 'ABS' stand for in automotive terms?
A
Anti-lock Braking System
B
Automatic Braking System
C
Advanced Battery Service
D
Air Bag Sensor
11.
What is a 'CV joint'?
A
A constant velocity joint that transmits power from the transmission to the wheels while allowing for suspension movement
B
A joint in the car's frame
C
The connection between the cabin and the engine
D
A joint in the convertible top mechanism
12.
What does 'compression ratio' indicate?
A
How compressed the car's suspension is
B
The ratio of the cylinder volume at the bottom of the piston stroke to the volume at the top
C
The fuel efficiency rating
D
The air pressure in the tires
13.
What is 'hydroplaning'?
A
Polishing a car's surface with water
B
A method of engine cooling
C
When tires lose traction by riding on a layer of water instead of gripping the road surface
D
A type of car wash
14.
What does a 'serpentine belt' do?
A
Secures the battery in place
B
Connects the steering wheel to the front wheels
C
A single continuous belt that drives multiple engine accessories like the alternator, power steering pump, and AC compressor
D
Holds the exhaust system in place
15.
What is 'detonation' or 'engine knock'?
A
Uncontrolled combustion in the engine cylinder that can damage engine components
B
The sound of a cold engine starting
C
The engine shutting off
D
The sound of worn brake pads

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