Deck 1: Emissions and Engine Performance Overview

Question 1

Technician A says that nitrogen can combine in the combustion chamber with oxygen to form nitrogen oxides, a regulated air pollutant. Technician B says that nitrogen makes up 78 percent of the air that we breathe every day. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Answer 1

C

Question 2

Technician A says under ideal combustion, all the nitrogen entering the combustion chamber will leave the combustion chamber unchanged. Technician B says under ideal combustion, all the oxygen and all the hydrocarbons are chemically recombined to produce carbon dioxide and water. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Answer 2

C

Question 3

The EPA regulates eight principal pollutants.

Answer 3

False

Question 4

The ASM 25/25 test is an enhanced inspection and maintenance program performed in lieu of the full I/M240 test.

Question 5

The least progress has been made on reducing ground-level ozone of the six major pollutants tracked by the EPA.

Question 6

Particulate matter (PM) is a microscopic form of gaseous air pollution.

Question 7

Technician A says one of the six principal air pollutants regulated by the EPA is nitrogen. Technician B says carbon dioxide contributes to global warming. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 8

Technician A says in 1996 the EPA mandated the use of OBD testing as a replacement for tailpipe and dynamometer testing of emissions. Technician B says in 2001 the EPA ruled that OBD testing be performed in lieu of testing tailpipe emissions on vehicles produced beginning in 1996. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 9

Under ideal combustion, all the oxygen and all the hydrocarbons are chemically recombined to produce carbon monoxide and water.

Question 10

One of the six principal air pollutants regulated by the EPA is nitrogen dioxide.

Question 11

Technician A says FTP is a test that measures emissions of HCs and CO₂. Technician B says EPA is a federal agency in charge of writing and implementing policies related to environmental protection. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 12

If the fuel filler cap leaks, what emissions gas will be allowed to enter the atmosphere?

A) HC
B) CO
C) CO₂
D) NO_X

Question 13

Volatile organic compounds are biodegradable and will not harm the environment.

Question 14

When unburned hydrocarbons are exposed to oxides of nitrogen and sunlight, what is produced?

A) particulate matter
B) carbon monoxide
C) both A and B
D) photochemical smog

Question 15

The I/M240 testing readings of HC, CO, and NO_X are provided in grams per mile.

Question 16

ASM 50/50 test is an enhanced inspection and maintenance program performed in lieu of the full I/M240 test.

Question 17

During perfect combustion in an internal combustion engine, the only output would be:

A) H₂O and CO₂
B) HC and CO
C) H₂O and CO
D) CO₂ and HC

Question 18

Particulate matter (PM) is generally referred to as soot and smoke.

Question 19

Photochemical smog is produced when:

A) oxides of nitrogen and carbon dioxide are exposed to sunlight together
B) oxides of nitrogen and unburned hydrocarbons are exposed to sunlight together.
C) oxides of nitrogen and carbon monoxide are exposed to sunlight together
D) carbon monoxide and unburned hydrocarbons are exposed to sunlight together

Question 20

Carbon deposits in the combustion chamber can :

A) act like a sponge
B) absorb fuel vapors on the intake stroke
C) release fuel vapors on the exhaust stroke
D) all of the above

Question 21

On what vehicle model year and when did the EPA authorize the use of OBD testing as a replacement for tailpipe and dynamometer testing of emissions?

Question 22

CO can have what physical effect on the human body?

Question 23

What are the negative consequences of CO₂ emissions from an internal combustion engine?

Question 24

What is the generic term given to a group of highly reactive gases that contain nitrogen and oxygen in varying amounts?

Question 25

What is particulate matter, and what other names are used to describe it?

Question 26

What is the term for the point (having an air-fuel ratio range of 0.9 to 1.1) at which the fuel mixture burns the most efficiently?

Question 27

NO_X begins to form in the combustion chamber when temperatures rise above what level?

Question 28

What emission in the exhaust stream is the result of unburned fuel leaving the combustion chamber?

Question 29

How are the emission levels recorded during the I/M240 test?

Question 30

What are volatile organic compounds, and how are they emitted from a motor vehicle?

Question 31

The EPA regulates what six major pollutants?

Question 32

What are the by-products of ideal combustion in the internal combustion gasoline engine?

Question 33

What federal agency has required that an inspection and maintenance (I/M) program be implemented for areas of the country that are considered non-attainment zones?

Question 34

The ideal relationship of gases in the internal combustion gasoline engine is 14.7:1. What term is used to describe this?

Question 35

What is a microscopic form of solid air pollution that can be either solid or atomized liquid matter and that is generally referred to as soot and smoke?

Question 36

Of the six major pollutants tracked by the EPA, which has had the least progress made on reducing ground level amounts?

Question 37

The United States emits what volume of air pollution annually?

Question 38

States may perform what other emission test besides the I/M240 test?

Question 39

What are the two enhanced inspection and maintenance programs performed in lieu of the full I/M240 test?

Question 40

The I/M240 test evolved from what federal test procedure?