Deck 38: Manual Transmissions and Transaxles

Question 1

Some manual transmissions use a constant mesh helical gear for reverse.

Answer 1

True

Question 2

A gear ratio of 4:1 is lower than a ratio of 2:1.

Answer 2

True

Question 3

Transaxles are commonly used on rear-wheel drive vehicles.

Answer 3

False

Question 4

Gears can _____.

A) transfer speed and torque
B) decrease speed and increase torque
C) increase speed and decrease torque
D) all answers are correct

Question 5

A transmission or transaxle uses meshed gears of various sizes to give the engine a mechanical advantage over its driving wheels.

Question 6

When an idler gear is placed between the driving and driven gear, the driven gear _____.

A) rotates in the same direction as the driving gear
B) rotates in the direction opposite to the driving gear
C) remains stationary
D) rotates faster

Question 7

Which type of gear develops the problem of gear whine at higher speeds?

A) spur gear
B) helical gear
C) both "spur gear" and "helical gear"
D) neither "spur gear" nor "helical gear"

Question 8

The size and number of teeth on a reverse idler gear determine the gear ratio for reverse.

Question 9

Using multiple cone synchronizer assemblies reduces the size and weight of the transmission.

Question 10

On a five-speed manual transmission, reverse gear is not normally fitted with a synchronizer.

Question 11

Most transaxles require a pilot bearing in the flywheel to support the input shaft.

Question 12

Differential gearing is included in a transaxle.

Question 13

Two meshed external-cut gears turn in opposite rotations.

Question 14

A gear ratio of less than 1.0 indicates an overdrive condition.

Question 15

The backup light switch is located _____.

A) on the transmission case
B) on the shifter linkage
C) both "on the transmission case" and "on the shifter linkage"
D) neither "on the transmission case" nor "on the shifter linkage"

Question 16

A shift rail and fork is used to control the movement of a synchronizer.

Question 17

The component used to lock the main shaft (output shaft) and a speed gear together is the _____.

A) synchronizer
B) shift linkage
C) shift fork
D) transfer case

Question 18

Blocking rings are typically made from aluminum and are part of a typical synchronizer assembly.

Question 19

Which of the following gear ratios shows an overdrive condition?

A) 0.85:1
B) 1:1
C) 2.15:1
D) none of these answers is correct

Question 20

The number of gear teeth per unit of measurement around the gear's diameter is known as gear _____.

A) ratio
B) pitch
C) size
D) load

Question 21

While discussing the shift linkage of a typical five-speed transmission, Technician A says three shift rails are needed. Technician B says only the center shift rail is machined with interlock and detent notches. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 22

Technician A says the speeds at which two meshed gears turn depend on the number of teeth on each gear. Technician B says if the driving gear has fewer teeth than the driven gear, the speed of the driven gear increases. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 23

Which of the following is NOT a function of gears?

A) multiply torque while increasing speed
B) multiply speed while decreasing torque
C) multiply torque while decreasing speed
D) transfer torque-leave speed unchanged

Question 24

In a five-speed manual transmission/transaxle, an idler gear is used for _____ gear.

A) first and second and third
B) direct drive [fourth gear]
C) overdrive [fifth gear]
D) reverse

Question 25

Technician A says the counter gear is actually several gears machined out of a single piece of steel. Technician B says the counter gear is driven by the clutch (main drive/input) gear and drives the mainshaft speed gears. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 26

Technician A says the transmission allows the driven wheels to spin faster than the engine. Technician B says the transmission multiplies the torque produced by the engine. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 27

Technician A says when a small gear drives a larger gear, output speed is decreased. Technician B says when a small gear drives a larger gear, output torque is decreased. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 28

To reduce gear whine, manufacturers use _____ gears.

A) spur
B) helical
C) ellipsoidal
D) parabolic

Question 29

A(n) _____ gear is used to transfer motion without changing rotational direction.

A) differential
B) spur
C) counter
D) idler

Question 30

When a small gear drives a larger gear, the output speed _____.

A) decreases and torque decreases
B) decreases and torque increases
C) increases and torque increases
D) increases and torque decreases

Question 31

Which of the following gear ratios generates the highest torque or power output?

A) 0.85:1
B) 2.67:1
C) 5.23:1
D) 11.12:1

Question 32

Technician A says in a conventional transmission, the speed gears freewheel around the mainshaft until they are locked to it by the synchronizer. Technician B says when not engaged, speed gears slide away from the counter gears until they are no longer in mesh. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 33

Technician A says lower gears allow for lower vehicle speeds but more torque. Technician B says higher gears provide less torque but higher vehicle speeds. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 34

When an idler gear is placed between the driving and driven gear, the driven gear ______.

A) rotates in the same direction as the driving gear
B) rotates in the direction opposite to the driving gear
C) remains stationary
D) causes the driven gear to rotate faster

Question 35

Technician A says an overdrive gear ratio is less than 1 to 1. Technician B says overdrive ratios provide more torque than underdrive ratios. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 36

Helical gears are being discussed. Technician A says helical gears are used in modern transmissions because they don't produce axial thrust. Technician B says in a helical gearset two or more teeth mesh at the same time, which distributes tooth load and produces a very strong gear. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 37

Technician A says helical cut gears have teeth cut at a 90-degree angle to the side of the gear. Technician B says helical gears run without creating gear whine. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 38

Technician A says spur-cut gears have teeth cut at an angle. Technician B says spur-cut gears run without creating gear whine. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 39

Self-shifting manual transmissions are being discussed. Technician A says these transmissions use planetary gearsets and torque converters like conventional automatic transmissions. Technician B says these transmissions are manual transmissions that shift gears using a computer-controlled actuator connected to the shift forks and a clutch actuator. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 40

When a large gear drives a smaller gear, the output speed _____.

A) decreases and torque decreases
B) decreases and torque increases
C) increases and torque increases
D) increases and torque decreases

Question 41

____________________ contain the transmission and the final drive gear assembly.

Question 42

A 1:1 ratio is called ____________________ drive.

Question 43

Transmission gearing is located within an aluminum or iron casting called the transmission ____________________ assembly.

Question 44

A 2.85:1 ratio represents a gear ____________________.

Question 45

Technician A says the main gears are also called speed gears. Technician B says speed gears freewheel around the mainshaft until they are locked to it by the engagement of their shift synchronizer unit. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 46

When the 1-2 shift rail is moved into first gear, the 3-4 and 5-R shift rails are prevented from moving by the ______.

A) detent ball and spring
B) shifter plate
C) shift fork
D) interlock pin

Question 47

Gear ratios are being discussed. Technician A says higher gear ratios allow for higher vehicle speeds and more torque. Technician B says lower gear ratios provide less torque and reduce vehicle speed. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 48

All gear changes pass through the ____________________ position.

Question 49

The reverse lockout system prevents shifting the transmission into reverse when the vehicle speed exceeds ______ mph.

A) 5
B) 12
C) 25
D) 40

Question 50

Technician A says spur gears have straight cut teeth. Technician B says helical gears have teeth cut at an angle. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 51

Transmission shafts are mounted ____________________ to one another.

Question 52

Final drive ratios are being discussed. Technician A says that the final drive ratio is the gear ratio of the ring gear and pinion gear in a rear axle. Technician B says the final drive ratio is the gear ratio of the pinion gear and ring gear in a transaxle. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 53

Blocking rings are being discussed. Technician A says that during a gear shift, the blocking ring is pushed into the speed gear cone by the shifter plates or keys. Technician B says the blocking ring eliminates friction between the cone-shaped surface on the speed gear and the synchronizer assembly. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 54

Shift linkages are being discussed. Technician A says cables are used to connect the shift lever to the transmission. Technician B says rods are used to connect the shift lever to the transmission. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 55

Which of the following is NOT one of the basic manual transmission shafts?

A) input shaft
B) countershaft
C) mainshaft
D) transfer shaft

Question 56

Shifter linkages are being discussed. Technician A says the shifter interlock prevents the selection of more than one gear during shifting. Technician B says when one of the shift rails is moved by the shifter, the interlock pins hold the other shift rails in their neutral position. Who is correct?

A) A only
B) B only
C) both A and B
D) neither A nor B

Question 57

Which of the following is not part of a synchronizer assembly?

A) blocking ring
B) synchronizer hub
C) shifting plates or keys
D) interlock pin

Question 58

A gear ratio of 0.80:1 is a(n) _____ ratio

A) reduction
B) overdrive
C) direct drive
D) geometric

Question 59

The VSS [vehicle speed sensor] provides information for the ______.

A) speedometer
B) cruise control system
C) upshift lamp
D) all answers are correct

Question 60

When fourth gear is selected on a five-speed manual transmission, the synchronizer couples the ______.

A) fourth speed gear to the mainshaft
B) clutch [input] gear to the mainshaft
C) both "fourth speed gear to the mainshaft" and "clutch [input] gear to the mainshaft"
D) neither "fourth speed gear to the mainshaft" nor "clutch [input] gear to the mainshaft"

Question 61

The countershaft assembly is often referred to as the ___________________ gear.

Question 62

Identify three electrical devices used with manual transmissions.

Question 63

There can be no power output until one of the speed gears is locked to the ___________________.

Question 64

Define final drive.

Question 65

If the engine is running at 3,000 rpm and the wheels are spinning at 500 rpm the overall gear ratio is ___________________to one.

Question 66

The shifter fork engages a groove in the synchronizer ___________________.

Question 67

Identify three advantages of an overdrive gear ratio being used in a vehicle.

Question 68

A disadvantage of ____________________ gears is axial thrust.

Question 69

When a small gear is meshed with a much larger gear, the input gear is often called a ___________________ gear, regardless of its tooth design.

Question 70

A transaxle whose differential gears change the direction of power flow 90 degrees is called a ___________________ transaxle.

Question 71

A counter gear assembly is sometimes referred to as a(n) ____________________ gear.

Question 72

The synchronizer ____________________ is precisely machined to slide onto the clutch hub smoothly.

Question 73

Four-wheel drive vehicles typically use a transmission and ____________________ case to deliver power to all four wheels.

Question 74

Describe shift blocking.

Question 75

What determines whether a conventional transmission or transaxle is used?

Question 76

Describe the purpose of an upshift lamp.

Question 77

What movement occurs inside a transmission when the vehicle is stopped, the engine is running, and the transmission is in neutral?

Question 78

Explain the role of shift rails and shift forks in the operation of transmissions and transaxles.

Question 79

___________________ means the transmission uses a mechanism of rings and clutches to bring rotating shafts and gears to the same speed before shifts occur.

Question 80

How is a gear pitch calculated?