A.S.E. G1 VOCAB created by jb

What is the definition of "abrasion"?

• The process of mixing air with liquid.

• Rubbing away or wearing of a part.

• A material added to the engine oil.

• A bubble of air trapped in a fluid circuit.

Answer explanation

The correct definition of "abrasion" is "rubbing away or wearing of a part," which describes the process of material being worn down through friction. The other options do not relate to this definition.

What does "ABS" stand for?

• Anti-lock brake system

• Automatic braking system

• Air brake system

• Anti-bounce system

Answer explanation

"ABS" stands for "Anti-lock brake system," which prevents wheel lock-up during braking, enhancing vehicle control and safety. The other options do not accurately represent the widely recognized meaning of "ABS."

What is the function of an "actuator"?

• To measure electrical current.

• To deliver mechanical action in response to a signal.

• To add material to engine oil.

• To mix air with liquid.

Answer explanation

An actuator is a device that converts a signal into mechanical action, making it essential for controlling systems and machinery. Thus, the correct function is to deliver mechanical action in response to a signal.

What is "amplify" used for in electronics?

• To measure air temperature.

• To enlarge or strengthen original characteristics.

• To mix air with liquid.

• To add material to engine oil.

Answer explanation

In electronics, 'amplify' refers to the process of enlarging or strengthening the original characteristics of a signal, making it more powerful for further processing or transmission.

What is "antifreeze" used for?

• To increase the voltage of a signal.

• To lower the freezing point of water.

• To measure electrical current.

• To add material to engine oil.

Answer explanation

Antifreeze is primarily used to lower the freezing point of water, preventing it from freezing in cold temperatures, which is essential for maintaining the proper functioning of engines and cooling systems.

What is the term for the sudden combustion of gases in the intake or exhaust manifold, resulting in a loud explosion?

• Backlash

• Backfire

• Balance shaft

• Barometric pressure

Answer explanation

The term for the sudden combustion of gases in the intake or exhaust manifold, resulting in a loud explosion, is 'backfire'. This phenomenon occurs when fuel ignites outside the combustion chamber.

Which component is used to reduce voltage by approximately 4-5 volts in the ignition system?

• Ballast resistor

• Battery cell

• Bearing clearance

• Bolt head

Answer explanation

The ballast resistor is used in ignition systems to reduce voltage by about 4-5 volts, ensuring proper operation of the ignition coil and preventing overheating. This makes it the correct choice among the options provided.

What is the purpose of a balance shaft in some engines?

• To increase speed

• To reduce vibration

• To enhance fuel efficiency

• To improve braking

Answer explanation

The purpose of a balance shaft in some engines is to reduce vibration. It counteracts the forces generated by the engine's moving parts, leading to a smoother operation and improved comfort for the driver.

What is the term for the unburned fuel and products of combustion that leak past the piston rings?

• Backpressure

• Blowby

• Brake fluid

• Base circle

Answer explanation

The term for unburned fuel and combustion products that escape past the piston rings is 'blowby'. This occurs when the pressure in the combustion chamber exceeds the sealing capability of the piston rings.

What is the function of a bearing race?

• To measure bolt diameter

• To provide a surface for roller or ball bearings

• To adjust brake balance

• To store electrical energy

Answer explanation

The function of a bearing race is to provide a smooth surface for roller or ball bearings to rotate against, reducing friction and wear in mechanical systems.