Auto 230 (Chapter 1)

Technician A says that planetary gearsets do not go in and out of engagement. Technician B says that planetary gears are designed to slip under high power. Who is right?

(A) only

Transmission fluid _________.

All of the above - carries away heat produced in the transmission - helps the holding members grip when they are applied - helps seal in pressure

Technician A says that the pump produces pressure only when the vehicle is moving. Technician B says that the pump produces pressure whenever the engine is running. Who is right?

B only

Technician A says that most modern transmissions have at least four forward gears. Technician B says that the highest gear on most modern transmissions is an overdrive gear. Who is right?

Both (A) and (B)

A CVT uses infinitely variable planetary gears to obtain different gear ratios.

False

Compared to the torque converter, the fluid coupling is very efficient.

False

The gear ratio of a direct drive gear is about .7 to 1.

False

Technician A says that the first transmissions had aluminum cases. Technician B says that modern transmissions have cast iron cases. Who is right?

Neither (A) nor (B).

Which of the following gears should be selected to obtain the best fuel economy?

Overdrive

Which of the following gears should be selected to obtain the best acceleration from a stop?

Reduction gear

________ are used to adjust transmission shaft endplay.

Thrust washers

On which of the following places would a seal most likely be used to prevent leaks?

Torque converter-to-transmission pump.

A dual clutch transmission can be thought of as two manual transmisssions.

True

Gear ratio is the relationship of the input and output shaft speeds.

True

Most automatic transaxles have at least one hollow shaft.

True

Servos are used to apply bands.

True

Simple planetary gears can be combined into more complex gearsets.

True

The most common holding members are ____.

clutches and bands

The hydraulic parts of the transmission or transaxle on most modern vehicles are operated by ____.

electronic components

Transmission fluid performs all of the following tasks, except:

expands gaskets.

A transaxle contains all of the following components, except:

fluid coupling.

The transmission and transaxle hydraulic system performs all of the following tasks, except:

multiplies torque in response to load.

The planet gears of a planetary gearset are attached to the ____.

planet carrier

All of the following are found in a fluid coupling, except:

stator

The stator redirects fluid moving from ____.

the turbine to the impeller