AUT 201 Week 2 quiz

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

• Selecting and shifting gear ratios to match road speed and engine load without driver input

• Selecting the vehicle direction without driver input

• Automatically coupling and uncoupling the transmission from the engine as necessary

• Parallel parking the vehicle without driver input

The transmission can automatically couple and uncouple from the engine when needed, much like a clutch on a manual transmission vehicle.

• True

• False

Technician A says that a transaxle must have a type of differential assembly to allow the front wheels to turn at different speeds while driving around a curve. Technician B says that a conventional rear-wheel drive vehicle will typically use a differential assembly that is located in the rear axle assembly. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Technician A says that parallel hybrid systems use transmissions that allow both the internal combustion engine and electric motor to drive the wheels at the same time. Technician B says that all hybrid systems use a variable pulley diameter continually variable transmissions to connect the internal combustion engine to the electric motor. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

Technician A says early torque converters always had some slippage, so in the late 1970's and early 1980's, manufacturers added a lockup clutch to the torque converter. Technician B says typically, torque converter lockup will only happen when the vehicle is under an appropriate load and speed. Who is correct?

• Technician A

• Technician B

• Both A and B

• Neither A nor B

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?

• Tech A

• Tech B

• Both Tech A and B

• Neither Tech A or B

In a lock-up converter the _______ and _______ are locked together, when conditions are suitable.

• Impeller and Turbine

• Impeller and Stator

• Turbine and Stator

• Turbine and Turbine shaft

Which of the following was used to connect the engine crankshaft to the input shaft of early automatic transmissions?

• Fluid coupling

• Torque converter

• A dry plate clutch

• A wet plate clutch

_____ is/are often used in the final drive of front-wheel-drive transaxles and also in conventional final drives on rear-wheel-drive vehicles.

• Helical-cut gears

• Spur gears

• Hypoid gears

• All of the above

Overdrive ratios typically are used to decrease fuel economy while travelling at highway speeds by slowing the engine speed.

• True

• False