Question 1

An aqueous parts cleaning tank uses a water-based cleaning solution with heat and agitation to remove dirt and oil from parts.

Accepted Answer

An aqueous parts cleaning tank does use a water-based cleaning solution with heat and agitation to remove dirt and oil from parts.

Question 2

Keeping tools neat, clean and organized can allow you to be safer and more profitable.

Accepted Answer

When tools are kept clean and organized, it is easier to locate them and reduces the risk of accidents or injuries. Additionally, it improves efficiency and productivity, leading to more profitability.

Question 3

Used oil filters should be crushed or drained for 12 hours prior to putting them into a trash container.

Accepted Answer

Used oil filters should be crushed or drained for 12 hours prior to disposal to remove as much excess oil as possible, as they are considered hazardous waste due to their potential to contain residual oil. Crushing or draining reduces the risk of environmental contamination and makes them easier to store and transport for recycling or disposal.

Question 4

Some cleaning solutions are not suitable for use on aluminum components because they may cause damage.

Accepted Answer

Certain cleaning solutions contain chemicals that may be too harsh for aluminum, causing damage such as corrosion or discoloration. It's important to use a cleaning solution that is safe and recommended for use on aluminum components.

Question 5

The Occupational Safety and Health Administration (OSHA) provides safety data sheets (SDS) for chemicals when asked for by the consumer.

Accepted Answer

OSHA does not provide Safety Data Sheets (SDS); it requires manufacturers, distributors, and importers to provide SDS for hazardous chemicals to downstream users to communicate information on these hazards.

Question 6

A hydraulic press is used to separate tight precision fit components.

Accepted Answer

A hydraulic press applies a large amount of force to separate two tight precision fit components.

Question 7

Car batteries can be explosive due to hydrogen gas emitted during charging.

Accepted Answer

During the charging process, hydrogen gas is produced in car batteries due to the electrolysis of water in the battery. If this gas is not properly ventilated, it can accumulate and potentially cause an explosion or fire. It is important to handle car batteries with caution and follow proper safety protocols during charging or handling.

Question 8

When using a floor jack, you should not work under a vehicle until it is fully raised and well balanced on the jack with the handle in an upright position.

Accepted Answer

You should not work under a vehicle until it is supported by jack stands in addition to being raised by a floor jack. The jack alone is not safe for supporting the vehicle while working underneath it.

Question 9

If used antifreeze is not recycled, it must be disposed of as a hazardous waste.

Accepted Answer

Antifreeze contains toxic chemicals such as ethylene glycol and heavy metals that can harm the environment if not disposed of properly. Therefore, it is classified as hazardous waste and should be recycled or disposed of at a hazardous waste facility.

Question 10

Pneumatic tools operate by hydraulic fluid pressure supplied by a pump.

Accepted Answer

Pneumatic tools operate using compressed air, not hydraulic fluid pressure.

Question 11

What is the function of the valvetrain?

Accepted Answer

The answer of What is the function of the valvetrain?...

Question 12

What poisonous gas is emitted from car exhaust that may be fatal to human beings?
A) oxygen
B) carbon dioxide
C) carbon monoxide
D) hydrogen

Accepted Answer

Carbon monoxide is a poisonous gas that is emitted from car exhaust and can be fatal to human beings. Oxygen is not poisonous and is actually necessary for human survival. Carbon dioxide is also emitted from car exhaust, but in lower concentrations and is not as immediately dangerous as carbon monoxide. Hydrogen is not typically emitted from car exhaust in significant amounts.

Question 13

How can turbocharging and supercharging increase an engine's performance?

Accepted Answer

The answer of How can turbocharging and supercharging increase an...

Question 14

Technician A says that a car should be lowered onto the mechanical safety locks once a desired height has been achieved. Technician B says that you should recheck lift contact once the vehicle has been raised just off the floor. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because safety locks are designed to support the weight of the vehicle once it has been raised to a desired height. Lowering the vehicle onto the safety locks helps to prevent accidents and ensure safety. 
Technician B is also correct because it is important to double check the contact points of the lift once the vehicle has been raised just off the floor. This ensures that the lift is securely holding the vehicle in place before raising it further. Therefore, both technicians are correct.

Question 15

Fire extinguisher use is being discussed. Technician A says a multipurpose dry chemical-type fire extinguisher may be used on an electrical fire. Technician B says water may be used to extinguish a gasoline fire. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct. A multipurpose dry chemical-type fire extinguisher can be used on an electrical fire because it is non-conductive and will not cause harm to the user. Technician B is incorrect; water should not be used on a gasoline fire as it can cause the fire to spread or create a dangerous explosion. Instead, a foam or carbon dioxide extinguisher should be used.

Question 16

Technician A says that safety glasses should be worn at all times in the automotive shop. Technician B says that ear protection should be worn at all times in the automotive shop. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Technician A says that safety glasses should...

Question 17

All of the following should not be worn in the automotive shop EXCEPT ____.
A) rings
B) watches
C) gloves
D) neck chains

Accepted Answer

Gloves are actually recommended to be worn in automotive shops for safety reasons. Rings, watches, and neck chains can get caught in machinery and cause injury, so they should not be worn.

Question 18

Putting a vehicle on a lift is being discussed. Technician A says that you can position the lift arms anywhere under the car as long as they are not perpendicular to the body. Technician B says that all cars can be lifted by the pinched panel in back of the front tires and in front of the rear tires. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Neither Technician A nor Technician B is correct. Lift arms should be positioned according to the manufacturer's recommendations and vehicle frame structure, and lifting a vehicle by the pinch weld panels can cause damage to the vehicle.

Question 19

Technician A says that caustic cleaning solutions may be used to clean any automobile engine part. Technician B says that some newer cleaning solutions are water based and environmentally friendly. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician B is correct. Some newer cleaning solutions are water based and environmentally friendly, and not all engine parts can be cleaned with caustic cleaning solutions.

Question 20

When lifting a heavy object from the floor, your legs should be straight and firm while using your back muscles to straighten up the rest of your body.

Accepted Answer

When lifting a heavy object from the floor, your legs should be bent and positioned shoulder-width apart to provide a stable base. Your back muscles should not be the primary muscles used, but instead, you should use your legs to lift and then straighten up your body. It's important to keep your back straight and use your abdominal muscles to stabilize your spine while lifting.

Quiz 1: Automotive Engines

An aqueous parts cleaning tank uses a water-based cleaning solution with heat and agitation to remove dirt and oil from parts.

Keeping tools neat, clean and organized can allow you to be safer and more profitable.

Used oil filters should be crushed or drained for 12 hours prior to putting them into a trash container.

Some cleaning solutions are not suitable for use on aluminum components because they may cause damage.

The Occupational Safety and Health Administration (OSHA) provides safety data sheets (SDS) for chemicals when asked for by the consumer.

A hydraulic press is used to separate tight precision fit components.

Car batteries can be explosive due to hydrogen gas emitted during charging.

When using a floor jack, you should not work under a vehicle until it is fully raised and well balanced on the jack with the handle in an upright position.

If used antifreeze is not recycled, it must be disposed of as a hazardous waste.

Pneumatic tools operate by hydraulic fluid pressure supplied by a pump.

What is the function of the valvetrain?

What poisonous gas is emitted from car exhaust that may be fatal to human beings?

How can turbocharging and supercharging increase an engine's performance?

Technician A says that a car should be lowered onto the mechanical safety locks once a desired height has been achieved. Technician B says that you should recheck lift contact once the vehicle has been raised just off the floor. Who is correct?

Fire extinguisher use is being discussed. Technician A says a multipurpose dry chemical-type fire extinguisher may be used on an electrical fire. Technician B says water may be used to extinguish a gasoline fire. Who is correct?

Technician A says that safety glasses should be worn at all times in the automotive shop. Technician B says that ear protection should be worn at all times in the automotive shop. Who is correct?

All of the following should not be worn in the automotive shop EXCEPT ____.

Technician A says that caustic cleaning solutions may be used to clean any automobile engine part. Technician B says that some newer cleaning solutions are water based and environmentally friendly. Who is correct?

When lifting a heavy object from the floor, your legs should be straight and firm while using your back muscles to straighten up the rest of your body.