Question 1

Which of the following describes the operation of the hydraulic control system and gear train in an automatic transmission?
A) Selecting and shifting gear ratios to match road speed and engine load without driver input
B) Selecting the vehicle direction without driver input
C) Automatically coupling and uncoupling the transmission from the engine as necessary
D) Parallel parking the vehicle without driver input

Accepted Answer

The hydraulic control system and gear train in an automatic transmission are responsible for selecting and shifting gear ratios to match road speed and engine load without driver input.

Question 2

Which of the following transmission designs uses multidisc clutch packs replace to synchronizer assemblies, which would be in a manual transmission, to lock the individual gears onto the main shaft?
A) Continuously variable
B) Conventional automatic
C) Dual-clutch
D) Dual-shaft

Accepted Answer

The answer of Which of the following transmission designs uses...

Question 3

Which type of automatic transmission use multi-plate clutches and bands applied by hydraulic pressure?
A) Hydraulic transmissions
B) Electronic transmissions
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Which type of automatic transmission use multi-plate...

Question 4

Which of the following parts is designed to hold a component when it is trying to turn in one direction and allow it to turn freely in the other direction?
A) One-way clutches
B) Multi-disc clutches
C) Bands
D) Both A and C

Accepted Answer

One-way clutches are designed to allow rotation in one direction while preventing it in the opposite direction, making them suitable for applications requiring such functionality.

Question 5

All of the following statements with respect to automatic transmission are true except:
A) The transmission has the ability to select and shift gears without input from the driver.
B) The transmission can automatically couple and uncouple from the engine when needed.
C) The transmission will automatically upshift and downshift in response to engine speed and load.
D) Automatic transmissions are not widely used because they are an expensive option.

Accepted Answer

Automatic transmissions are widely used in many vehicles due to their convenience and ease of use, despite being more expensive than manual transmissions.

Question 6

A torque converter does all of the following except:
A) enables the transmission to automatically couple and uncouple from the engine when needed.
B) allows the engine to idle at a stop even though the transmission is still in gear.
C) multiplies torque from the engine to the input shaft of the transmission under certain driving conditions.
D) transmits lower amounts of torque as engine speed increases.

Accepted Answer

A torque converter does not transmit lower amounts of torque as engine speed increases; instead, it is designed to multiply torque and efficiently transfer power from the engine to the transmission.

Question 7

All of the following statements with respect to the principles of operation of automatic transmissions are true except:
A) A planetary gear set is a device with several gears assembled in a compact design.
B) Planetary gears are held together in a sun gear.
C) If an individual component of a planetary gear set is prevented from turning, it will create one of three gear ratios.
D) By combining two or more planetary gear sets, we can create the needed gear ratios, or speeds.

Accepted Answer

Planetary gears are not held together in a sun gear; instead, they consist of a sun gear, planet gears, and a ring gear, with the planet gears revolving around the sun gear.

Question 8

Any gear ratio of less than 1:1 is considered an overdrive ratio. Overdrive ratios are typically used to:
A) increase engine speed.
B) increase fuel economy.
C) decrease engine noise.
D) decrease engine wear.

Accepted Answer

Overdrive ratios reduce engine RPMs at higher speeds, which can improve fuel economy by reducing the amount of fuel consumed.

Question 9

Any gear ratio of less than 1:1 is considered:
A) gear reduction.
B) direct drive.
C) overdrive.
D) indirect drive.

Accepted Answer

A gear ratio of less than 1:1 means the output gear rotates faster than the input gear, which is characteristic of overdrive.

Question 10

Planetary gears are held in place by a:
A) sun gear.
B) ring gear.
C) planet carrier.
D) clutch.

Accepted Answer

The planet carrier holds the planetary gears in place and allows them to rotate around the sun gear within the ring gear.

Question 11

Tech A says that the higher the numerical gear ratio (4:1), the more torque will be applied to the wheels. Tech B says that the lower the numerical gear ratio (2:1), the more speed can be obtained at the wheels. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

A higher numerical gear ratio increases torque at the wheels, while a lower numerical gear ratio allows for higher speed.

Question 12

Tech A says that vehicles with smaller engines require less gear ratios to operate efficiently. Tech B says that manufacturers have been adding more gear ratios in a quest for better fuel economy. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Manufacturers have been adding more gear ratios to improve fuel economy by allowing engines to operate more efficiently at various speeds. Smaller engines do not necessarily require fewer gear ratios.

Question 13

Tech A says that most automatic transmissions use planetary gear sets. Tech B says that planetary gear sets are often combined together to create the needed gear ratios for a transmission. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Both Tech A and Tech B are correct. Most automatic transmissions use planetary gear sets, and these gear sets are often combined to create the necessary gear ratios.

Question 14

Which of these transmissions uses two, either wet or dry, clutches in place of a standard torque converter to connect the engine to the transmission?
A) Continuously variable transmissions
B) Power-splitting transmission
C) Dual-clutch transmissions
D) Dual-shaft transmissions

Accepted Answer

Dual-clutch transmissions use two clutches, either wet or dry, to connect the engine to the transmission, allowing for faster and more efficient gear changes compared to a standard torque converter.

Question 15

Which of these are often used to change the direction of power flow 90 degrees?
A) Hypoid gears
B) Helical cut gears
C) Spur gear
D) Bands

Accepted Answer

Hypoid gears are specifically designed to transmit power between shafts that are at right angles to each other, making them suitable for changing the direction of power flow by 90 degrees.

Question 16

Tech A says that spur gears create more thrust motion than helical gears. Tech B says that helical cut gears are noisier than straight-cut gears. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Spur gears do not create more thrust motion than helical gears; helical gears create more thrust due to their angled teeth. Helical gears are quieter than straight-cut (spur) gears because their angled teeth engage more gradually.

Question 17

Tech A says that a parallel hybrid drivetrain has two or more different devices to propel the vehicle. Tech B says that power-splitting transmissions use two adjustable pulleys and a heavy metal belt. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Tech A is correct because a parallel hybrid drivetrain indeed uses two or more different devices, such as an internal combustion engine and an electric motor, to propel the vehicle. Tech B is incorrect because power-splitting transmissions, like those in hybrid vehicles, typically use planetary gear sets rather than adjustable pulleys and belts.

Question 18

Tech A says that dual-clutch transmissions are more like a manual transmission internally. Tech B says that the driver needs to operate the clutches on a dual-clutch transmission. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Tech A is correct because dual-clutch transmissions use two clutches, one for odd gears and one for even gears, which is similar to the way a manual transmission works. Tech B is incorrect because the driver does not need to operate the clutches on a dual-clutch transmission; the transmission does this automatically.

Question 19

Tech A says that a transaxle assembly includes the transmission and final drive mechanism. Tech B says that transaxles are used for front wheel drive vehicles. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

A transaxle assembly does include both the transmission and final drive mechanism, and transaxles are commonly used in front-wheel-drive vehicles.

Question 20

Which of these converts the hydraulic pressure acting on a piston to a mechanical force that is then applied to a brake band?
A) Seals
B) Springs
C) Servos
D) Pinions

Accepted Answer

Servos convert hydraulic pressure into mechanical force to apply a brake band in automotive systems.

Quiz 6: Automatic Transmission Fundamentals

Which of the following describes the operation of the hydraulic control system and gear train in an automatic transmission?

Which of the following transmission designs uses multidisc clutch packs replace to synchronizer assemblies, which would be in a manual transmission, to lock the individual gears onto the main shaft?

Which type of automatic transmission use multi-plate clutches and bands applied by hydraulic pressure?

Which of the following parts is designed to hold a component when it is trying to turn in one direction and allow it to turn freely in the other direction?

All of the following statements with respect to automatic transmission are true except:

A torque converter does all of the following except:

All of the following statements with respect to the principles of operation of automatic transmissions are true except:

Any gear ratio of less than 1:1 is considered an overdrive ratio. Overdrive ratios are typically used to:

Any gear ratio of less than 1:1 is considered:

Planetary gears are held in place by a:

Tech A says that the higher the numerical gear ratio (4:1) , the more torque will be applied to the wheels. Tech B says that the lower the numerical gear ratio (2:1) , the more speed can be obtained at the wheels. Who is correct?

Tech A says that vehicles with smaller engines require less gear ratios to operate efficiently. Tech B says that manufacturers have been adding more gear ratios in a quest for better fuel economy. Who is correct?

Tech A says that most automatic transmissions use planetary gear sets. Tech B says that planetary gear sets are often combined together to create the needed gear ratios for a transmission. Who is correct?

Which of these transmissions uses two, either wet or dry, clutches in place of a standard torque converter to connect the engine to the transmission?

Which of these are often used to change the direction of power flow 90 degrees?

Tech A says that spur gears create more thrust motion than helical gears. Tech B says that helical cut gears are noisier than straight-cut gears. Who is correct?

Tech A says that a parallel hybrid drivetrain has two or more different devices to propel the vehicle. Tech B says that power-splitting transmissions use two adjustable pulleys and a heavy metal belt. Who is correct?

Tech A says that dual-clutch transmissions are more like a manual transmission internally. Tech B says that the driver needs to operate the clutches on a dual-clutch transmission. Who is correct?

Tech A says that a transaxle assembly includes the transmission and final drive mechanism. Tech B says that transaxles are used for front wheel drive vehicles. Who is correct?

Which of these converts the hydraulic pressure acting on a piston to a mechanical force that is then applied to a brake band?