Automatic Transmission Fundamentals Final Exam Attempt 2
Which of the following is a typical condition for torque converter lockup?
Light-load higher speed
All of the following are elements of a single stage torque converter, EXCEPT:
band
Which of the following was used in early automatic transmissions?
fluid coupler
The transmission needs to be able to adapt the engine torque to meet the ______________ demands of the vehicle.
speed and power
Which of the following is a typical component of a planetary gear set?
All of the answers listed
Which of the following is an additive found in typical transmission fluid?
All of the answers listed
In a lock-up converter, the ___________ and ___________ are locked together, when conditions are suitable.
impeller and turbine
Technician A says a rotor pump has a center rotor that is driven by the torque converter. Technician B says a vane pump has a center gear that drives an outer gear. Who is correct?
Technician A
Technician A says antifoam additives help to prevent foaming of the transmission fluid. Technician B says viscosity modifiers cause the transmission fluid to be thick when cold and thin when hot. Who is correct?
Technician A
Technician A says that locking seals are typically made of cast iron. Technician B says that lip seals are typically made of Teflon and commonly have a sealing lip. Who is correct?
Technician A
Technician A says the transmission should be able to adapt the engine torque to meet the speed and power demands of the vehicle. Technician B says the torque converter does not adapt in this way. Who is correct?
Technician A
Technician A says there are many types of internal seals for an automatic transmission. Technician B says a square-cut seal is usually made from cork. Who is correct?
Technician A
Two technicians are discussing transmission heat exchangers. Technician A says when installing an add-on cooler, you should plum the cooler so the transmission fluid goes through the add-on cooler before the radiator. Technician B says when installing an add-on cooler, you should plum the cooler so the transmission fluid goes through the radiator before the add-on cooler. Who is correct?
Technician A
Which of the following is the typical routing of an external transmission fluid cooler?
Cooler first then radiator
Typically, when turbine speed reaches around 90% of impeller speed, torque multiplication is about:
1:1
Which of the following gear reductions would you get having a smaller input gear with 8 teeth driving a larger output gear with 24 teeth?
3:1
In a simple planetary gear, Technician A says to obtain a direct drive or 1:1 gear ratio, lock together any two members of the gear set. Technician B says to obtain reverse, the ring gear is attached to the output shaft and the planet carrier is held stationary. Who is correct?
Both Technician A and B
Technician A says modern automatic transmission cases are made of lightweight aluminum and alloys. Technician B says on the rear or output side of the transmission, there is an aluminum housing called the extension housing. Who is correct?
Both Technician A and B
Technician A says the multidisc clutch can hold one member of the planetary gear set stationary. Technician B says the multidisc clutch can transmit twisting force from one component to another. Who is correct?
Both Technician A and B
Two technicians are discussing torque converters. Technician A says that a torque converter does a similar job as the manual clutch. Technician B says that the torque converter multiplies torque from the engine to the input shaft of the transmission. Who is correct?
Both Technician A and B
