Deck 1: Drive Train Basics

Question 1

An automobile can be divided into four major systems: the engine, the drivetrain, the chassis and the body, interior and accessories.

Answer 1

True

Question 2

The main components of the drivetrain are the transmission, differential, and drive axles.

Answer 2

True

Question 3

As torque is multiplied, rotation speed is also multiplied.

Answer 3

False

Question 4

The driveline can multiply both power and torque.

Question 5

A planetary gear set contains two elements: a ring gear and a sun gear.

Question 6

A CVT relies on the use of a torque converter.

Question 7

Most modern automatic transmissions rely on mechanical, hydraulic, and electronic components to accomplish gear ratio changes.

Question 8

Overdrive gears have ratios of less than 1:1.

Question 9

Large amounts of engine vacuum are formed in the cylinders during the exhaust stroke.

Question 10

A CVT uses belts and pulleys, instead of gear sets, to provide changing drive ratios.

Question 11

A torque converter is a mechanical coupler that transmits engine torque into the transmission.

Question 12

Hydraulically activated brake bands and multiple-friction disc packs are used to direct power flow through the transmission.

Question 13

Some hybrid electric vehicles (HEVs) use a CVT that is based on the use of electric motors/generators to vary drive ratios.

Question 14

A transaxle has a separate housing for the differential gears.

Question 15

All vehicles are either FWD or RWD or a combination of both.

Question 16

Engine load is the primary controlling factor that determines the amount of engine vacuum produced.

Question 17

Most automatic transmissions use at least one planetary gear set.

Question 18

Most torque converters consist of an impeller, a turbine, and a stator.

Question 19

One design function of a transmission is to produce torque.

Question 20

An engine develops torque that can be multiplied by transmission gears.

Question 21

Engine vacuum is largely determined by which of the following?

A) Engine speed
B) Engine load
C) Vehicle speed
D) None of the above

Question 22

All ATF have the same characteristics; therefore, it does not matter which ATF you add to a particular vehicle.

Question 23

Technician A says by multiplying the number of teeth on one gear by the number of teeth on a second gear, a gear ratio can be determined. Technician B says the mathematical relationship, according to the number of teeth, of one gear to another is expressed as a gear ratio. Who is correct?

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

Question 24

Many bearings must be capable of withstanding both radial and axial loads.

Question 25

Helical gears have their teeth parallel to and in alignment with the center of the gear.

Question 26

Technician A says a torque converter transfers engine power to the transmission, operating by hydraulic force. Technician B says a torque converter divides torque evenly. Who is correct?

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

Question 27

Automatic transmission fluid (ATF) is responsible for the operation, lubrication, and cooling of the internal parts of the transmission.

Question 28

Transmission fluid filters, although different in appearance and composition, have the same function.

Question 29

Which device is used to transfer engine torque to an automatic transmission?

A) Differential
B) Torque converter
C) Valve body
D) Flexplate

Question 30

Technician A says that gears may be used to apply torque to other rotating parts. Technician B says that gears may be used to multiply torque. Who is right?

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

Question 31

Which of the following is a component of the drivetrain.

A) Transmission
B) Differential
C) Drive axle
D) All of the above

Question 32

A transfer case is used in a 4WD vehicle to allow torque to be transferred to the front-drive axles.

Question 33

RWD vehicles use a long steel tube, using two universal joints and a slip joint, to connect the transmission to the rear axle.

Question 34

The weight of a standard transmission flywheel is equal to the weight of an automatic transmission flexplate.

Question 35

The sun gear has teeth on the outer surface.

Question 36

The main purpose of a differential gear set is to allow equal wheel speed when a vehicle is turning a corner.

Question 37

The most common use for hypoid gears is in modern differentials.

Question 38

In order to create a low-pressure area in the cylinder during the intake stroke, the volume of the cylinder does which of the following?

A) Remains the same
B) Increases
C) Decreases
D) Pushes up

Question 39

A bushing is the simplest type of bearing.

Question 40

Technician A says gears are used to multiply torque. Technician B says to apply torque to other rotating parts of the drivetrain, gears are used. Who is correct?

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

Question 41

Technician A says that in a RWD vehicle, the transmission and drive axle are located in a single assembly. Technician B says a transaxle is a single assembly containing the transmission and drive axle.

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

Question 42

The ring-and-pinion gears in the drive axle assembly allow for ____________________ torque multiplication.

Question 43

The engine vacuum is dependent on engine ____________________.

Question 44

Torque is measured by either ____________________ or ____________________.

Question 45

By applying the engine's torque to one of the gears in a planetary gear set and preventing another member from moving, which of the following changes can take place?

A) Torque multiplication
B) Speed increase
C) Change of direction
D) All of the above

Question 46

Torque is calculated by multiplying the applied force by the ____________________ from the center of the ____________________ to the point where the force is exerted.

Question 47

The main components of the drivetrain are the ____________________, ____________________, and ____________________.

Question 48

Which of the following is not true of an overdrive gear?

A) It increases fuel economy.
B) It increases torque.
C) It decreases torque.
D) It reduces operating noise.

Question 49

The rotating or turning effort of the engine's crankshaft is called ____________________.

Question 50

Which gears are best suited for quiet, high-speed, low thrust applications when heavy loads are applied?

A) ​Bevel
B) ​Hypoid
C) ​Herringbone
D) ​Helical

Question 51

Most automotive engines are ____________________ cycle engines.

Question 52

Transmissions contain several combinations of large and small gears. Lower (high ratio) gears allow for lower vehicle speeds but more ____________________.

Question 53

____________________ gear allows for the greatest torque multiplication.

Question 54

In gear systems, speed reduction means torque ____________________.

Question 55

A planetary gear set consists of a ____________________ gear, a ____________________ gear and several ____________________ gears mounted in a planetary ____________________.

Question 56

Measurements of horsepower indicate the ____________________ of work being performed and the ____________________ at which it is being done.

Question 57

The purpose of ____________________ is to promote fuel economy and reduce operating noise while maintaining highway cruising speed.

Question 58

A transmission has a ____________________ position that allows the engine to run without applying power to the drive wheels.

Question 59

Instead of relying on gear sets to provide changing drive ratios, a CVT uses ____________________ and ____________________.

Question 60

Gear ratios can be varied by changing the ____________________ and ____________________ of teeth of the gears in mesh.

Question 61

____________________ or ____________________ bearings are used wherever friction must be minimized.

Question 62

What is the intent of  a CVT transmissions?

Question 63

Why does torque increase when a smaller gear drives a larger gear?

Question 64

The ____________________ controls the flow of fluid throughout the transmission in response to the inputs it receives about engine and vehicle speeds and loads.

Question 65

In a FWD vehicle, ____________________ joints are fitted to the axles to allow the axles to move with the vehicle's suspension and steering systems.

Question 66

In FWD vehicles, the transmission and drive axle is located in a single assembly called a ____________________.

Question 67

____________________ gears are like spur gears except that their teeth have been twisted at an angle from the gear centerline.

Question 68

The most common type of gear found in automotive differentials is the ____________________ gear.

Question 69

Reverse is accomplished in a manual transmission by the use of an _______________ _______________ brought into mesh with two other gears.

Question 70

What are the primary purposes of the vehicle's drivetrain?

Question 71

Automatic transmission fluid can be a ____________________- based, partially ____________________, or totally ____________________ -based oil.

Question 72

What mechanisms do current CVTs use to vary gear and speed ratios?

Question 73

Hybrid electric vehicles use ____________________, ____________________ and the engine directly connected to a planetary gear set.

Question 74

4WD vehicles are equipped with a ____________________ to allow the engine torque to be transferred to the front-drive axles.

Question 75

The torque convertor assembly is comprised of a(n) ____________________, a(n) ____________________ and a(n)____________________.

Question 76

Current automatic transmissions are fitted with one of three types of filters: a ____________________ filter, ____________________ filter, or ____________________ filter.

Question 77

The primary purpose of the differential is to allow ____________________ wheel speeds when the vehicle is rounding a corner.

Question 78

A thrust washer is used to control end ____________________.

Question 79

In RWD vehicles, the drive axle is connected to the transmission through a ____________________.

Question 80

A(n) ____________________ is the simplest type of bearing, a cylindrical hole usually lined with brass or bronze.