Catalytic converter - Marvel EDU

Loading question...

You are in free guest mode. Timed Practice Revision List Attempt History Progress Tracking Create a free account to unlock these tools

Prev Next

Practice Listening: Multiple Choice, Multiple Answers ID: #35823 Short Catalytic converter

Instructions ›

Listen to the recording and answer the question by selecting all the correct responses. You will need to select more than one response.

Transcript:

Let’s talk for a moment about the job of the catalytic converter. In a nut shell, their job is to convert harmful pollutants into less harmful pollutants—emissions—before they ever leave the car's exhaust system. They are still most commonly used in motor vehicle exhaust systems. But you’ll also find them on generator sets, forklifts, mining equipment, trucks, buses, trains, and other engine-equipped machines. A catalytic converter provides an environment for a chemical reaction where toxic combustion by-products are converted to less-toxic substances. Catcons are now fitted to both petrol and diesel engines, and I must say they do a good job, as long as they are clean and not clogged up with carbon and other deposits from the engine.

Which of the following statements concerning the operation of catalytic converters are correct?

* Click on the correct answers

The inclusion of catcons on diesel engines is prohibited by law. Carbon and other engine deposits impede their efficient operation. Inappropriate use in mining equipment, trucks and buses renders them ineffective. They convert toxic substances to less harmful substances which are emitted from engines. The use of converters intended for use on petrol engines on diesel engines is a common problem.

Result:

AI explanationShows the answer. Tap to open.

Option 2: "Carbon and other engine deposits impede their efficient operation."

Explanation: The text mentions that catalytic converters do a good job as long as they are clean and not clogged up with carbon and other deposits, directly supporting the idea that these deposits impede their efficient operation.

Option 1: "The inclusion of catcons on diesel engines is prohibited by law."

Explanation: The text states that catalytic converters are fitted to both petrol and diesel engines, indicating that their inclusion on diesel engines is not prohibited by law.

Option 3: "Inappropriate use in mining equipment, trucks and buses renders them ineffective."

Explanation: The text does not suggest that the use of catalytic converters in mining equipment, trucks, and buses is inappropriate or renders them ineffective; rather, it states that they are commonly found in these applications.

Option 4: "They convert toxic substances to less harmful substances which are emitted from engines."

Explanation: The text clearly states that the job of catalytic converters is to convert harmful pollutants into less harmful pollutants before they leave the car's exhaust system, confirming that they convert toxic substances to less harmful ones.

Option 5: "The use of converters intended for use on petrol engines on diesel engines is a common problem."

Explanation: The text does not mention any common problems regarding the use of petrol engine converters on diesel engines, and instead emphasizes that catalytic converters are fitted to both types of engines.

The rest of this explanation is for members. Sign in free to read why the other options are wrong, key words and tips.

With a free account: Retry and compare every attempt.

Be the first! No community answers here yet. Submit yours and help others learn.

Saving...