Engine Performance
What four strokes make up the four-stroke engine cycle?
Intake, Compression, Power, Exhaust
What type of brake system uses shoes and a wheel cylinder?
Drum brakes
What is the unit of electric pressure?
Volt
What connects the steering wheel to the steering gear?
Steering column
What color are safety glasses required to be in most automotive shops?
Clear
What does the acronym “OBD” stand for?
On-Board Diagnostics
What does ABS stand for?
Anti-lock Braking System
What component stores electrical energy in a vehicle?
Battery
What is the purpose of a shock absorber?
To dampen spring oscillations and control vehicle bounce
What should be done before lifting a car on a two-post lift?
Inspect lift points and ensure the vehicle is properly centered and secure
What sensor measures the amount of air entering the engine?
Mass Air Flow (MAF) Sensor
What is the purpose of a proportioning valve in a brake system?
To prevent rear wheels from locking up under hard braking
What does a multimeter measure?
Voltage, current (amps), and resistance (ohms)
What alignment angle refers to the tilt of the top of the tire inward or outward?
Camber
What is a torque wrench used for?
To apply a specific amount of force to a fastener
What is the purpose of the EGR valve?
To recirculate a portion of exhaust gases back into the intake to reduce NOx emissions
What is the most likely cause of a low, spongy brake pedal?
Air in the brake lines
What is the function of a relay in an automotive electrical system?
To control high current with a low-current signal
What is the name of the part that allows the front wheels to pivot left and right while supporting vehicle weight?
Steering knuckle
Name one type of fire extinguisher suitable for electrical fires.
Class C
What tool is used to measure cylinder compression?
Compression gauge
What tool is used to check brake rotor thickness?
Micrometer or brake rotor gauge
What are the three main parts of an automotive alternator?
Rotor, stator, and rectifier
What are the symptoms of a worn ball joint?
Clunking noise, loose steering, uneven tire wear
What does the acronym “PPE” stand for in shop safety?
Personal Protective Equipment