Deck 1: Introduction to the Automobile

Question 1

Air rushing through an engine's intake system is mixed with fuel on its way to the cylinders. This results in lower pressure in the intake manifold, which is known as ___________________.

Answer 1

vacuum

Question 2

On a manual transmission vehicle, the MOST-Likely cause of a change in torque would be:

A)the depression of the clutch
B)changing gears
C)the uncoupling of the powertrain
D)engine load

Answer 2

B

Question 3

In a spark-ignition engine, gasoline is especially combustible when one part of it is atomized with about 15 parts of air.

Answer 3

True

Question 4

Unlike diesel engines, gasoline engines do not have spark plugs or an ignition system because spark timing is controlled by the fuel injection system.

Question 5

During a discussion about the lubrication system, Technician A says that, in theory, during a 1,000-mile trip a properly operating lubrication system will allow about as much wear between parts as occurs during the first 15 minutes of engine operation. Technician B says that the system will allow about as much wear between parts as occurs during the first 15 seconds of engine operation in the morning before oil has reached all of the engine's parts. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 6

On a vehicle with automatic transmission, which of the following would MOST-Likely cause the rear wheels to rotate at different speeds as the vehicle goes around corners?

A)The drive shaft
B)The transaxle
C)The clutch
D)The differential

Question 7

The piston is sealed to the cylinder with ____________________ that slide against the cylinder wall as the piston moves up and down.

Question 8

The ____________________ includes the suspension and also supports the engine and the car body.

Question 9

Vintage engines have a fuel injection system that mixes fuel and air in response to the amount of air that flows through it.

Question 10

All of the following support the engine's operation EXCEPT:

A)the fuel system
B)the electrical system
C)the drive shaft
D)the lubrication system

Question 11

____ is circulated by the water pump through water jackets in the engine's cylinder block. It carries heat to the radiator, where it can be carried away by the outside air.

A)Torque
B)Coolant
C)Fuel
D)Steam

Question 12

While discussing the four-stroke cycle, Technician A says that during the intake stroke, the piston is pulled down by the turning crankshaft, creating a vacuum above it. Technician B says this event occurs during the exhaust stroke. Who is right?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 13

Three types of fuel delivery systems have been used on automobile four-stroke cycle engines: carburetor, gasoline fuel injection, and ____________________.

Question 14

Older cars had heavy frames, but most cars are built today with what is known as a unibody design.

Question 15

Which of the following would LEAST-Likely be found on a rear-wheel drive vehicle?

A)Transaxle
B)Drive shaft
C)Transmission
D)Differential

Question 16

All of the following are included in the engine's electrical system EXCEPT:

A)the ignition system
B)the starting system
C)the powertrain
D)the charging system

Question 17

____ react to temperature, airflow, engine load, road speed, and oxygen content in the exhaust stream.

A)Torques
B)Actuators
C)Pistons
D)Sensors

Question 18

Liquid gasoline does not burn.

Question 19

During the four-stroke cycle, which event is LEAST-Likely to occur during the power stroke?

A)The piston moves back up, forcing any remaining exhaust gas from the cylinder through the open exhaust valve.
B)The burning fuel expands rapidly.
C)The piston moves back down in the cylinder.
D)The exhaust valve opens as the piston approaches the bottom of its travel.

Question 20

The purpose of the ____________________ is to reduce or eliminate any remaining pollutants in the engine's exhaust.

Question 21

What is the purpose of the exhaust system and what are its components?

Question 22

Briefly describe the basic operating principle of a reciprocating gasoline engine.

Question 23

What is the purpose of the ignition system and how does it operate?

Question 24

What is the relationship between the charging system and the ignition system? What is the role of the alternator?

Question 25

What is the difference between a front-wheel drive and a rear-wheel drive vehicle?