FREE AUTOMOTIVE AND STUDY GAMES ABOUT PA

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FREE AUTOMOTIVE AND STUDY GAMES ABOUT PA

EMISSIONS TERMS EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -52 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Hydrocarbon (HC)

Answer:

Exhaust pollutant that is unburned fuel from incomplete combustion or a misfire.

Question 2: Positive Crankcase Ventilation (PCV)

Answer:

Valve location on top of the engine for the purpose of regulating the flow of blow-by gases being removed from the crankcase.

Question 3: Oxygen (O2)

Answer:

Exhaust gas that is a good lean indicator.

Question 4: Closed Loop

Answer:

Fuel control mode when the fuel mixture is being adjusted based on real-time feedback from the oxygen sensors.

Question 5: Sticker Security

Answer:

All emissions stickers must be secured under lock and key at all times.

Question 6: Oxides of Nitrogen (NOx)

Answer:

Exhaust pollutant that is highly toxic and increases when combustion chamber temperatures exceed 2,500 deg. F.

Question 7: Subject Vehicle

Answer:

A gasoline powered vehicle, 1975 and newer model year, having a GVWR of 9,000 pounds or less and registered in an I/M county.

Question 8: Trip

Answer:

A vehicle driving mode that allows a component or system to be monitored.

Question 9: Carbon Dioxide (CO2)

Answer:

Exhaust gas that mirrors CO levels. When CO2 goes up, CO always goes down.

Question 10: Flashing MIL Light

Answer:

Warning to indicate a sever misfire that can cause Catalytic Converter damage.

Question 11: Referee Process

Answer:

A customer can challenge the results of an emissions inspection if they contact PennDOT within ten days of the date on which their vehicle failed.

Question 12: Diagnostic Trouble Code (DTC)

Answer:

Standardized alpha-numeric code that identifies where and what on-board problem exists.

Question 13: Vehicle Inspection Report (VIR)

Answer:

A printout that occurs the conclusion of every emissions test that must be signed by the inspector and given to the customer.

Question 14: Drive Cycle

Answer:

The driving conditions needed to execute all readiness monitors on a vehicle.

Question 15: Monitor

Answer:

Onboard diagnostic test that is executed by the PCM.

Question 16: Carbon Monoxide (CO)

Answer:

Toxic exhaust pollutant formed when there isn't enough oxygen to support combustion.

Question 17: Oxygen Sensor

Answer:

Sensor located in the exhaust stream that provides feedback to the rich or lean condition of the combustion process.

Question 18: Reduction Converter

Answer:

Catalytic converter that reduces NOx emissions by reducing them back into their main components of N2 and O2.

Question 19: Evaporative Control System (EVAP)

Answer:

Emissions control that uses a charcoal canister to collect and store vapors that originate in the fuel system (from the fuel tank and carburetor).

Question 20: Void Sticker

Answer:

If a sticker becomes unusable (torn, damaged, etc.) and cannot be affixed to the windshield the inspector must void the sticker and retain the unusable sticker.

Question 21: Exhaust Gas Recirculation (EGR)

Answer:

Precombustion emissions control that allows a small amount of exhaust gas mix with the air/fuel entering the combustion chamber to reduce the volatility of the mixture and reduce NOx production.

Question 22: Catalytic Converter Damage

Answer:

Excessive temperatures of over 1500°F, caused by overly rich exhaust, will cause the catalytic material to sinter and will cause damage to the catalytic converter.

Question 23: Emissions Inspector

Answer:

Person who completed the 16 hour certification program and is licensed to perform emissions inspections anywhere in Pennsylvania.

Question 24: Fuel Trim

Answer:

Setting controlled by the PCM that reflects adjustment to fuel delivery to optimize engine combustion conditions.

Question 25: Powertrain Control Module (PCM)

Answer:

On-board computer responsible for control fuel system controls and engine performance.

Question 26: Vacuum relief valve

Answer:

Valve located in the gas cap that is designed to open and fresh air to enter the fuel tank to relieve vacuum that might build up during cooling down periods.

Question 27: Rich Mixture

Answer:

Fuel ratio below 14.7:1 that represents an excess of gasoline and not enough oxygen.