Deck 73: Automatic Transmission Fundamentals

Question 1

A standard transmission has a torque converter. An automatic transmission uses a flexplate and heavy steel flywheel instead.

Answer 1

False

Question 2

Which of the following statements is LEAST-Likely true?

A)A torque converter has curved blades with a stator between the impeller and the turbine to redirect fluid flow.
B)The stator is the part that makes torque increase possible.
C)The torque converter has split rings attached to the blades of the turbine and impeller.
D)A fluid coupling has straight blades and a stator.

Answer 2

D

Question 3

An automatic transmission shifts automatically between gear ranges and does not require a manual clutch.

Answer 3

True

Question 4

While having a discussion, Technician A says that a conventional automatic transmission uses sequence control in which the solenoid controls a typical spool-type shift valve that sends fluid to the clutch or servo. Technician B says it uses direct electronic control with PWM solenoid valves. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 5

In overdrive, the direct clutch drives the planetary carrier counterclockwise, causing the long pinions to walk counterclockwise around the held large sun gear.

Question 6

The ____________________ senses engine load and vehicle speed and adjusts the transmission's shift points and fluid pressures to match.

Question 7

The ____________________ support is a large splined support that extends out of the transmission's front pump body.

Question 8

The ____________________ provides a means of changing gear ratios by holding and turning members to get different results.

Question 9

A(n) ____ combines two planetary gearsets to provide more gear ratio possibilities.

A)compound planetary gearset
B)orifice
C)detent
D)lock-up torque converter

Question 10

Fluid is distributed throughout the transmission to control shifts and provide lubrication to critical parts.

Question 11

Which of the following is LEAST-Likely a type of pump?

A)Inlet type
B)Rotor type
C)Internal/external gear crescent type
D)Vane type

Question 12

All of the following statements are true EXCEPT:

A)a torque converter serves the same purpose as the clutch used with a manual transmission.
B)an input shaft connects the torque converter to the transmission.
C)the transmission shaft provides hydraulic fluid to the torque convertor, value body, and lubrication circuits.
D)a computer makes shift decisions and a valve body acts on them.

Question 13

While having a discussion about the Ravigneaux gearset, Technician A says that in overdrive, the direct clutch drives the planetary carrier clockwise, causing the long pinions to walk clockwise around the held large sun gear. Technician B says that this occurs in third gear. Who is correct?

A)A only
B)B only
C)Both A and B
D)Neither A nor B

Question 14

The term MOST-Likely used to describe a sensor that frequently sends an output voltage to the computer that varies with road speed is:

A)transmission fluid temperature sensor
B)vehicle speed sensor
C)torque converter
D)throttle position sensor

Question 15

____________________ occurs when the vehicle is prevented from moving while the engine is accelerated.

Question 16

All of the following statements are true EXCEPT:

A)a voltage signal changes in response to throttle opening.
B)an overdrive cancel switch prevents shifting into gear.
C)a neutral safety switch mounted on the transmission prevents the engine from starting in any gear but park or neutral.
D)engine coolant temperature monitored by the computer prevents the torque converter clutch from operating when the engine is cold.

Question 17

A ____ gearset uses two sun gears, two sets of planetary pinions connected to a single carrier, and a ring gear.

A)partial non-hunting
B)Ravigneaux
C)non-hunting
D)hunting

Question 18

The ____________________ is a lever that locks the transmission output shaft when the shift lever is in park.

Question 19

With a standard torque converter, true coupling speed only happens when the vehicle crests a hill, when the engine stops driving the wheels and the wheels start to drive the engine.

Question 20

The term MOST-Likely used to describe the readout on the instrument panel or steering column that tells the driver which gear range has been selected is:

A)orifice
B)vortex
C)shift quadrant
D)detent

Question 21

What are the basic gear rules?

Question 22

What is the purpose of the torque converter?

Question 23

What is likely to occur if a radiator heat exchanger leaks when the engine is operating?

Question 24

What is the difference between a fluid coupling and a torque converter?

Question 25

What is the purpose of the fluid pump?