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Brakes I - AUT 120 - Chapter 102 - Wheel Bearings and Service - Chapter Quiz Questions with Certified Solutions What is the primary function of wheel bearings in a vehicle? A) To reduce friction and allow smooth wheel rotation B) To support the weight of the vehicle and allow the wheels to rotate freely C) To control the steering angle D) To improve braking efficiency What is a common sign of a worn-out wheel bearing? A) Uneven brake pad wear B) Grinding or humming noise from the...

Brakes I - AUT 120 - Chapter 97 - Brake Principles and Friction Materials - Chapter Quiz Questions with Correct Answers What material is commonly used for brake pads in modern braking systems? A) Copper and zinc B) Semi-metallic compounds C) Rubber and plastic D) Aluminum What is the primary purpose of the brake rotor in a disc brake system? A) To generate heat for the brakes B) To prevent the wheels from turning C) To provide a surface for the brake pads to clamp against to sl...

AUT 120 Chapter 101 Questions and Answers Already Passed What is the first step in inspecting the brake system? A) Check the brake fluid level B) Inspect the brake pads and rotors C) Test the brake pedal feel D) Check for brake fluid leakage What causes brake fade? A) Overheating of the brake components B) Worn-out brake pads C) High tire pressure D) Excessive brake fluid levels What is the recommended procedure for checking brake pad thickness? A) Measure the thickness us...

Auto 120 Mechanics Electricity Questions and Answers Already Passed What is the primary function of the alternator in an automotive electrical system? A) To provide power to the starter motor B) To charge the vehicle's battery C) To control the engine's electrical components D) To distribute power to the headlights What does the term "short circuit" refer to in an automotive electrical system? A) An overcharging of the battery B) A direct connection between two wires c...

AUT 242-Chapter 2 Questions and Answers Already Passed What happens when an electrical circuit is open? When a circuit is open, current cannot flow through it. What is the role of an inductor in an electrical circuit? An inductor stores energy in a magnetic field and resists changes in current. What is the function of an electrical relay? A relay is used to control a high-current circuit with a low-current signal. What is the difference between direct current (DC) and alterna...

Brakes I - AUT 120 - Chapter 98 Questions and Answers 100% Pass What is the main function of a wheel bearing in a vehicle? A wheel bearing supports the weight of the vehicle and allows the wheels to rotate smoothly. How can you tell if a bearing is worn out? Worn-out bearings may produce a grinding noise or cause vibration in the wheel area. What is the purpose of a grease seal in a wheel bearing assembly? A grease seal prevents dirt, moisture, and debris from entering the bearing w...

AUT 101-Chapter 3 Questions and Answers Graded A+ What is the formula for calculating the speed of an object? Speed is calculated by dividing the distance traveled by the time it takes to travel that distance (Speed = Distance ÷ Time). What is the unit of force in the International System of Units (SI)? The unit of force in SI is the newton (N). What is the definition of work in physics? Work is done when a force is applied to an object, and the object moves in the direction of ...

Auto 100 Final Exam Questions and Answers Rated A+ What is the role of a vehicle’s oxygen sensor? The oxygen sensor measures the amount of oxygen in the exhaust gases to help the engine control module adjust the fuel mixture for efficient combustion. What is the difference between an automatic and manual transmission? An automatic transmission shifts gears automatically based on speed and load, while a manual transmission requires the driver to shift gears manually. What is t...

Valvoline: Automotive Chemicals 101 Quiz with Complete Solutions What is the primary purpose of engine oil in a vehicle? It lubricates engine components, reduces friction, and helps prevent overheating. Why is it important to regularly check and change engine oil? Dirty or low oil can cause excessive wear and overheating, leading to engine damage. What role does antifreeze play in a vehicle? It prevents the engine coolant from freezing in cold temperatures and boiling in hot temper...

UTI Auto/Diesel 101 End of Course Exam Questions and Answers Graded A+ What does the fuel filter in a diesel engine do? It removes contaminants from the fuel before it reaches the engine. Why is proper torque specification important when tightening bolts on an engine? It ensures components are securely fastened without causing damage. What is the main purpose of a turbocharger in a diesel engine? To increase air intake and improve engine performance. What is the role of a cooling...