Deck 1: Introduction to the Automobile

Question 1

6)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.

Answer 1

A

Question 2

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

Answer 2

diesel fuel injection

Question 3

3)Liquid gasoline does not burn.

Answer 3

True

Question 4

19)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 ___________________.

Question 5

5)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 6

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

Question 7

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

Question 8

11)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 9

15)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 10

14)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

Question 11

10)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 12

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

Question 13

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

Question 14

7)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 15

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

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

Question 16

8)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 17

13)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 18

9)____ 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 19

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

Question 20

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

Question 21

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

Question 22

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

Question 23

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

Question 24

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

Question 25

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