ASVAB (Armed Services Vocational Aptitude Battery)Paragraph Comprehension (PC)Easy
Read the following passage: "The primary function of a carburetor in an internal combustion engine is to mix air and fuel in the correct proportions. This mixture is then drawn into the engine cylinders for combustion. An improperly adjusted carburetor can lead to either a 'rich' mixture (too much fuel) or a 'lean' mixture (too much air), both of which negatively impact engine performance and fuel efficiency. Regular maintenance, including cleaning and adjustment, is crucial for optimal engine operation." Based on the passage, what is the main purpose of a carburetor?
- ATo cool the engine cylinders during operation.
- BTo ignite the fuel mixture in the engine.
- CTo combine air and fuel for combustion.
- DTo filter impurities from the fuel supply.
Show answer & explanationAnswer & explanation
Correct answer: C. To combine air and fuel for combustion.
The passage explicitly states that 'The primary function of a carburetor in an internal combustion engine is to mix air and fuel in the correct proportions.' This directly answers the question about its main purpose.
Why the other options are wrong
- A. The passage does not mention cooling the engine as a carburetor function.
- B. Ignition is a function of spark plugs, not the carburetor, as implied by the passage's focus on mixture preparation.
- D. Filtering fuel is typically handled by a fuel filter, not the carburetor itself, according to the passage.
Carburetor Function
A device that mixes air and fuel in appropriate ratios for internal combustion engines.
- Creates air-fuel mixture for combustion.
- Incorrect adjustment impacts engine performance and efficiency.
- Requires regular maintenance.
Memory trick: Carb Mixes Air & Fuel, Engine Runs Cool.