Question 1

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

Accepted Answer

Automatic transmissions are widely used in many vehicles today and are not considered an expensive option compared to manual transmissions.

Question 2

A torque converter does all of the following except:

Accepted Answer

A torque converter does not transmit lower amounts of torque as engine speed increases; it is designed to multiply torque at lower speeds and provide a smooth transition of power.

Question 3

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

Accepted Answer

Planetary gears are not held together in a sun gear; rather, they are arranged around a central sun gear, with planet gears rotating around it, typically held together by a carrier.

Question 4

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

Accepted Answer

Overdrive ratios reduce engine RPM at higher speeds, which can lead to increased fuel economy by allowing the engine to operate more efficiently.

Question 5

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

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

Question 6

Planetary gears are held in place by a:

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 7

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?

Accepted Answer

Tech A is correct because a higher numerical gear ratio increases torque at the wheels. Tech B is correct because a lower numerical gear ratio allows for higher speed at the wheels.

Question 8

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?

Accepted Answer

Manufacturers have been adding more gear ratios to improve fuel economy by allowing engines to operate more efficiently at various speeds.

Question 9

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?

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 10

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?

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 11

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

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 12

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?

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 generally quieter than straight-cut (spur) gears due to their gradual engagement.

Question 13

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?

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 14

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?

Accepted Answer

Dual-clutch transmissions are similar to manual transmissions internally because they use two clutches to engage and disengage gears, but the operation is automated, so the driver does not need to operate the clutches manually.

Question 15

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?

Accepted Answer

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

Question 16

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

Accepted Answer

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

Question 17

Tech A says that multidisc clutches are used to drive or hold planetary gear components. Tech B says that bands are used to drive planetary gear components. Who is correct?

Accepted Answer

Multidisc clutches are indeed used to drive or hold planetary gear components in automatic transmissions. Bands, on the other hand, are typically used to hold or lock planetary gear components, not drive them.

Question 18

Tech A says that bands allow components to freewheel in one direction, and lock up in the other direction. Tech B says that sprags are stronger than one-way rollers. Who is correct?

Accepted Answer

Sprags are indeed stronger than one-way rollers, while bands do not allow components to freewheel; they are used to hold components stationary in automatic transmissions.

Question 19

Tech A says that dog clutches are used on most automatic transmissions. Tech B says that all transmissions utilize helical cut gears. Who is correct?

Accepted Answer

Dog clutches are not typically used in automatic transmissions, and not all transmissions use helical cut gears; some use straight cut gears.

Question 20

Apply devices, such as clutches and brakes, either drive or stop members in a planetary gear set in order to create the needed gear ratio.

Accepted Answer

In a planetary gear set, clutches and brakes are used to hold or drive different components, allowing for various gear ratios by changing which gears are stationary or rotating.

Quiz 6: Automatic Transmission Fundamentals

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?

Tech A says that multidisc clutches are used to drive or hold planetary gear components. Tech B says that bands are used to drive planetary gear components. Who is correct?

Tech A says that bands allow components to freewheel in one direction, and lock up in the other direction. Tech B says that sprags are stronger than one-way rollers. Who is correct?

Tech A says that dog clutches are used on most automatic transmissions. Tech B says that all transmissions utilize helical cut gears. Who is correct?

Apply devices, such as clutches and brakes, either drive or stop members in a planetary gear set in order to create the needed gear ratio.

Quiz 6: Automatic Transmission Fundamentals

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?

Tech A says that multidisc clutches are used to drive or hold planetary gear components. Tech B says that bands are used to drive planetary gear components. Who is correct?

Tech A says that bands allow components to freewheel in one direction, and lock up in the other direction. Tech B says that sprags are stronger than one-way rollers. Who is correct?

Tech A says that dog clutches are used on most automatic transmissions. Tech B says that all transmissions utilize helical cut gears. Who is correct?

Apply devices, such as clutches and brakes, either drive or stop members in a planetary gear set in order to create the needed gear ratio.

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