Deck 1: Drive Train Basics

Question 1

One design function of a transmission is to produce torque.

Answer 1

False

Question 2

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

Answer 2

True

Question 3

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

Answer 3

False

Question 4

As torque is multiplied, rotation speed is also multiplied.

Question 5

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

Question 6

A CVT relies on the use of a torque converter.

Question 7

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

Question 8

A transaxle has a separate housing for the differential gears.

Question 9

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

Question 10

The driveline can multiply both power and torque.

Question 11

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

Question 12

Overdrive gears have ratios of less than 1:1.

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

Most automatic transmissions use at least one planetary gear set.

Question 15

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

Question 16

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

Question 17

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

Question 18

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

Question 19

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

Question 20

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

Question 21

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

Question 22

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

Question 23

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

Question 24

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 25

The sun gear has teeth on the outer surface.

Question 26

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

Question 27

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 28

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

Question 29

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

Question 30

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

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

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

Question 33

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 34

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

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

Question 35

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 36

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 37

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

Question 38

A bushing is the simplest type of bearing.

Question 39

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 40

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

Question 41

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

Question 42

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

Question 43

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

Question 44

____________________ gear allows for the greatest torque multiplication.

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

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 47

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

Question 48

Torque is measured by either ____________________ or ____________________.

Question 49

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

Question 50

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

Question 51

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

Question 52

Most automotive engines are ____________________ cycle engines.

Question 53

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

Question 54

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

Question 55

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

Question 56

In gear systems, speed reduction means torque ____________________.

Question 57

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

Question 58

The engine vacuum is dependent on engine ____________________.

Question 59

​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 60

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 61

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

Question 62

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

Question 63

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

Question 64

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

Question 65

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

Question 66

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

Question 67

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

Question 68

​ What is the intent of  a CVT transmissions?

Question 69

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

Question 70

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

Question 71

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

Question 72

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

Question 73

A thrust washer is used to control end ____________________.

Question 74

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

Question 75

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

Question 76

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

Question 77

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 78

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

Question 79

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

Question 80

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