Question 1

Technician A says that some Continuously Variable Transmissions (CVT's) require a heating system to warm the transmission fluid during cold weather operation. Technician B says that CVT's are able to create an infinite number of gear ratios between their minimum and maximum ratio. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Some CVTs do require a heating system to warm the transmission fluid in cold weather, and CVTs can create an infinite number of gear ratios between their minimum and maximum ratio.

Question 2

Technician A says that Variable Diameter Pulley (VDP) Continuously Variable Transmissions (CVT) will often have a planetary gear set to produce reverse. Technician B says that many CVT's in vehicles use a rubber drive belt between two pulleys to transfer power. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Many CVTs use a planetary gear set to produce reverse, while the belt in CVTs is typically made of metal, not rubber.

Question 3

Technician A says the toroidal continuously variable transmission (CVT) is limited in production because of high manufacturing cost. Technician B says the toroidal, or roller, design uses two curved discs, an input disc and an output disc. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because toroidal CVTs are indeed more expensive to manufacture, which limits their production. Technician B is also correct as the toroidal design involves two curved discs, an input and an output disc, with rollers in between to transfer torque.

Question 4

Technician A says the toroidal continuously variable transmission (CVT) can have a high gear ratio of approximately 4:1 to begin accelerating the vehicle. Technician B says when the rollers in a toroidal CVT are perpendicular to the input and output disc, the gear ratio is 1:1. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Both Technician A and Technician B are correct. The toroidal CVT can have a high gear ratio of approximately 4:1 to begin accelerating the vehicle, and when the rollers in a toroidal CVT are perpendicular to the input and output disc, the gear ratio is 1:1.

Question 5

Technician A says the toroidal continuously variable transmission (CVT) can handle larger amounts of torque than a belt-driven CVT. Technician B says toroidal CVTs use special transmission fluid to prevent wear to the rollers. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Toroidal CVTs are generally capable of handling more torque than belt-driven CVTs, and they use special transmission fluid to reduce wear on the rollers.

Question 6

Technician A says the toroidal continuously variable transmission (CVT) cannot handle as high an amount of torque as a belt-driven CVT. Technician B says toroidal CVTs use special transmission fluid to prevent wear to the rollers. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Toroidal CVTs use special transmission fluid to prevent wear to the rollers, making Technician B correct. Technician A is incorrect because toroidal CVTs can handle higher torque compared to belt-driven CVTs.

Question 7

Technician A says the toroidal continuously variable transmission (CVT) is limited in production because of high manufacturing cost. Technician B says the toroidal, or roller, design uses four curved discs - two input discs and two output discs. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

The answer of Technician A says the toroidal continuously variable...

Question 8

In the Toroidal Continuously Variable Transmission (CVT) design, power is transferred from the input disc to the output disc through a set of variable-angle _______.
A) Pulleys
B) Sheaves
C) Rollers
D) Gear sets

Accepted Answer

In a Toroidal CVT, power is transferred through variable-angle rollers that adjust their position to change the transmission ratio.

Question 9

The variable-diameter pulley CVT:
A) As the vehicle gains speed, the input pulley diameter increases while the output pulley diameter decreases.
B) As the vehicle gains speed, the input pulley diameter decreases while the output pulley diameter increases.
C) Prevents high torque multiplication.
D) Has no effect on the gear ratio.

Accepted Answer

As the vehicle gains speed, the input pulley diameter increases while the output pulley diameter decreases, resulting in a higher gear ratio.

Question 10

Technician A says that on a vehicle with a VDP CVT, when the vehicle starts from a stop, the input pulley has a small diameter while the output pulley has large diameter. Technician B says that VDP CVT's typically use a separate electric motor for reverse. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

In a CVT (Continuously Variable Transmission), when the vehicle starts from a stop, the input pulley indeed has a smaller diameter and the output pulley has a larger diameter to provide more torque. Technician B is incorrect as VDP CVTs do not typically use a separate electric motor for reverse; they use the same pulleys and belt system to achieve reverse gear.

Question 11

Technician A says that VDP CVT's use a steel belt made up of hundreds of transversely mounted steel plates. Technician B says that some VDP CVT's are programmed to give the feel of shift points. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because VDP CVTs use a steel belt made of transversely mounted steel plates. Technician B is also correct because some VDP CVTs are programmed to simulate shift points for a more traditional driving feel.

Question 12

All of the following statements are true with respect to belt service except:
A) Belts need to be replaced if there are any signs of wear on them.
B) Transmission can compensate for a small amount of wear in its normal programming.
C) Replacement of the belt is direction oriented.
D) Replace only the individual component that has been damaged in the belt.

Accepted Answer

Belts are typically replaced as a whole unit rather than just the damaged component, as replacing only part of a belt can lead to imbalance and further issues.

Question 13

The variator assembly should be replaced in all of the following conditions except:
A) sheave damage.
B) drive belt wear.
C) shaft damage.
D) transmission fluid contamination.

Accepted Answer

The answer of The variator assembly should be replaced in...

Question 14

Tech A states that fluid pressure in a CVT should be checked with a transmission pressure gauge. Tech B states that pressures in a CVT will often exceed the range of a traditional gauge and will require the use of a pressure transducer. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

Pressures in a CVT will often exceed the range of a traditional gauge and will require the use of a pressure transducer.

Question 15

Tech A states that when replacing a CVT belt the sheaves should be checked for wear. Tech B states that the bearings might require replacement when replacing the belt. 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. Checking the sheaves for wear and inspecting the bearings for potential replacement are both important steps when replacing a CVT belt to ensure proper function and longevity of the transmission system.

Question 16

Tech A states that a CVT belt must be installed in the correct direction or the transmission will slip. Tech B states that CVT belts are lubricated using splash lubrication from the transmission case. Who is correct?
A) Tech A
B) Tech B
C) Both A and B
D) Neither A nor B

Accepted Answer

CVT belts must be installed in the correct direction to ensure proper operation and prevent slipping.

Question 17

All of the following are the advantage of using the CVT in the vehicle except:
A) It greatly helps in emission control.
B) The transmission can infinitely change the gear ratio within its operational design.
C) It offers a smooth, step-less transmission.
D) This design allows the engine to operate in its most efficient operating rpm range for fuel economy or performance.

Accepted Answer

CVT (Continuously Variable Transmission) does not directly help in emission control. Its main advantages are smooth, step-less transmission, infinite gear ratio changes, and allowing the engine to operate efficiently.

Question 18

Technician A says continuous variable transmissions may use two variable diameter pulleys rather than gears to change ratio. Technician B says a hybrid vehicle may use a parallel hybrid transmission, in which either the engine or an electric motor can power the transmission. Which technician is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because continuous variable transmissions (CVTs) often use two variable diameter pulleys connected by a belt or chain to change the transmission ratio smoothly. Technician B is also correct because a parallel hybrid transmission allows either the internal combustion engine or the electric motor to power the vehicle, or both can work together.

Question 19

Technician A says most manufacturers use a multi-disc clutch pack and a set of planetary gears to allow the continuously variable transmission (CVT) to operate in reverse. Technician B says Ford Motor Company uses these planetary gear sets to create a two-speed CVT. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Both Technician A and Technician B are correct. Most manufacturers use a multi-disc clutch pack and a set of planetary gears to allow the CVT to operate in reverse, while Ford Motor Company uses these planetary gear sets to create a two-speed CVT.

Question 20

Technician A says a variable-diameter pulley (VDP) system operates using two variable diameter pulleys with either a steel or a rubber belt between them. Technician B says the rubber belt has a limited service life in an automobile, so most manufacturers use them. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Accepted Answer

Technician A is correct because a variable-diameter pulley (VDP) system, such as those used in continuously variable transmissions (CVTs), typically operates using two variable diameter pulleys with a belt between them. The belt can be made of steel or rubber, but steel belts are more common in automotive applications due to their durability.

Quiz 21: Continuously Variable Transmissions

Technician A says that some Continuously Variable Transmissions (CVT's) require a heating system to warm the transmission fluid during cold weather operation. Technician B says that CVT's are able to create an infinite number of gear ratios between their minimum and maximum ratio. Who is correct?

Technician A says that Variable Diameter Pulley (VDP) Continuously Variable Transmissions (CVT) will often have a planetary gear set to produce reverse. Technician B says that many CVT's in vehicles use a rubber drive belt between two pulleys to transfer power. Who is correct?

Technician A says the toroidal continuously variable transmission (CVT) is limited in production because of high manufacturing cost. Technician B says the toroidal, or roller, design uses two curved discs, an input disc and an output disc. Who is correct?

Technician A says the toroidal continuously variable transmission (CVT) can have a high gear ratio of approximately 4:1 to begin accelerating the vehicle. Technician B says when the rollers in a toroidal CVT are perpendicular to the input and output disc, the gear ratio is 1:1. Who is correct?

Technician A says the toroidal continuously variable transmission (CVT) can handle larger amounts of torque than a belt-driven CVT. Technician B says toroidal CVTs use special transmission fluid to prevent wear to the rollers. Who is correct?

Technician A says the toroidal continuously variable transmission (CVT) cannot handle as high an amount of torque as a belt-driven CVT. Technician B says toroidal CVTs use special transmission fluid to prevent wear to the rollers. Who is correct?

Technician A says the toroidal continuously variable transmission (CVT) is limited in production because of high manufacturing cost. Technician B says the toroidal, or roller, design uses four curved discs - two input discs and two output discs. Who is correct?

In the Toroidal Continuously Variable Transmission (CVT) design, power is transferred from the input disc to the output disc through a set of variable-angle _______.

The variable-diameter pulley CVT:

Technician A says that on a vehicle with a VDP CVT, when the vehicle starts from a stop, the input pulley has a small diameter while the output pulley has large diameter. Technician B says that VDP CVT's typically use a separate electric motor for reverse. Who is correct?

Technician A says that VDP CVT's use a steel belt made up of hundreds of transversely mounted steel plates. Technician B says that some VDP CVT's are programmed to give the feel of shift points. Who is correct?

All of the following statements are true with respect to belt service except:

The variator assembly should be replaced in all of the following conditions except:

Tech A states that fluid pressure in a CVT should be checked with a transmission pressure gauge. Tech B states that pressures in a CVT will often exceed the range of a traditional gauge and will require the use of a pressure transducer. Who is correct?

Tech A states that when replacing a CVT belt the sheaves should be checked for wear. Tech B states that the bearings might require replacement when replacing the belt. Who is correct?

Tech A states that a CVT belt must be installed in the correct direction or the transmission will slip. Tech B states that CVT belts are lubricated using splash lubrication from the transmission case. Who is correct?

All of the following are the advantage of using the CVT in the vehicle except:

Technician A says most manufacturers use a multi-disc clutch pack and a set of planetary gears to allow the continuously variable transmission (CVT) to operate in reverse. Technician B says Ford Motor Company uses these planetary gear sets to create a two-speed CVT. Who is correct?

Technician A says a variable-diameter pulley (VDP) system operates using two variable diameter pulleys with either a steel or a rubber belt between them. Technician B says the rubber belt has a limited service life in an automobile, so most manufacturers use them. Who is correct?