Automatic Transmissions Flashcards
At torque converter stall:
a. Two members are stationary and one is turning b. One member is stationary and two are turning c. None of the members are stationary d. All of the members are stationary
a. Two members are stationary and one is turning
A torque converter is made up of these elements. They are:
a. Torus, stator and impeller b. Stator, turbine and impeller c. Pump, impeller and stator d. Turbine, stator and torus
b. Stator, turbine and impeller
At the coupling point:
a. All members are rotating b. Two members are stationary and one is turning c. there is no vortex flow d. There is no rotary flow
a. All members are rotating
Torque multiplication is greater at what speed?
a. Low speed b. Cruising speed c. High speed d. On the float
a. Low speed
A torque converter one way clutch that will not hold will cause:
a. High fuel consumption at high speed b. Poor performance at high speed c. Poor torque multiplication at high speed d. Low engine rpm at converter stall
d. Low engine rpm at converter stall
A torque converter roller clutch that is locked in both directions will cause:
a. Low engine rpm at low speeds b. Poor torque multiplication at low speed c. Poor engine performance at high speed d. High fuel consumption at low speed
c. Poor engine performance at high speed
The purpose of the guide ring in a torque converter is to reduce the oil:
a. Movement between members b. Turbulence c. Level int he coupling phase d. Impact Angle
b. Turbulence
The maximum time allowed for performing a stall test is:
a. 10 seconds b. 5 seconds c. 15 seconds d. It does not matter
b. 5 seconds
When lock up torque converters lock, they connect the:
a. Impeller to the input shaft b. Impeller to the turbine c. Turbine to the converter cover d. Converter cover to the impeller
c. Turbine to the converter cover
Vortex flow is high when:
a. Engine at high stall speed b. Vehicle at coupling point c. Torque converter lock up d. Vehicle is in coast mode
a. Engine at high stall speed
The lock up converter is most likely to lock under this condition
a. Idle b. Heavy acceleration c. High gear and cruise d. Deceleration
c. High gear and cruise
The impeller is attached to:
a. The input shaft b. The output shaft c. The flex plate d. Stator
c. The flex plate??
answer says a. The input shaft, but I think that’s wrong
The part of a planetary gear set that is held is called the:
a. Input member b. Output member c. Reaction member d. Reduction member
c. Reaction member
What must occur in a simple planetary gearset to achieve a direct drive?
a. sun gear must be the input member b. ring gear must be the input member c. planetary carrier must be the input member d. two gearset members must be input members
d. two gearset members must be input members
What must occur in a simple planetary gearset to achieve a slow overdrive?
a. sun hear must be the input member b. ring gear must be the input member c. planetary carrier must be the input member d. the ring gear must be held
c. planetary carrier must be the input member
What would be the result of holding the planetary carrier of a simple planetary gearset?
a. Reverse b. Direct drive c. Fast overdrive d. Forward reduction
a. Reverse
What allows the stator to operate correctly during vortex and rotary flow?
a. The torque converter clutch b. An overrunning clutch c. Governor pressure d. Throttle pressure
b. Overrunning clutch
What can throttle pressure be used for in automatic transmissions?
a. Reduce governor pressure b. Increase governor pressure c. Reduce mainline pressure d. Increase mainline pressure
d. Increase mainline pressure
What affects shift valves to cause a downshift?
a. Governor pressure overcoming throttle pressure b. Engine vacuum pressure overcoming governor pressure c. Throttle pressure overcoming governor pressure d. Vehicle speed overcoming governor pressure
c. Throttle pressure overcoming governor pressure
What is the drive member of a torque converter?
a. The stator b. The impeller c. The turbine d. The governor
b. The impeller
What type of fluid flow is present in the torque converter during maximum torque multiplication?
a. Viscous flow b. Vortex flow c. Rotary flow d. Radial flow
b. Vortex flow
What is necessary for lock-up engagement to take place in a torque converter?
a. The lock-up solenoid check ball must be off its seat and the switch valve held up by the spring tension. b. The lock-up solenoid must be energized with the check ball on its seat and the switch valve held down by line pressure. c. The lock-up check ball must be off its seat and the switch valve held down by the line pressure. d. The solenoid must have the check ball seated and the switch valve held up by spring tension.
b. The lock-up solenoid must be energized with the check ball on its seat and the switch valve held down by line pressure.
What component is capable of driving a planetary gearset member in an automatic transmission?
a. A band b. An overrunning clutch c. An input shaft-mounted multiple disc clutch d. A case-mounted multiple disc clutch
c. An input shaft-mounted multiple disc clutch
Which of the following is capable of controlling radial loads?
a. Torrington washers b. Nylon thrust washers c. Steel-backed thrust washers d. Bushings
d. Bushings
What solenoid replaces the conventional throttle valve cable setup in electronically controlled automatic transmissions?
a. Electronic pressure control (EPC) solenoid b. Shift solenoid c. Torque converter clutch (TCC) solenoid d. Pulse-width modulated (PWM) solenoid
a. Electronic pressure control (EPC) solenoid
What makes a compound planetary gearset a Simpson gearset?
a. A common sun gear b. A common ring gear c. A common planetary carrier d. A one-piece front sun gear and rear ring gear assembly
a. A common sun gear
What component in an electronically controlled automatic transmission replaces the governor valve?
a. The throttle position sensor (TPS) b. The manifold absolute pressure sensor (MAP) c. The vehicle speed sensor (VSS) d. The transmission fluid temperature sensor (TFT)
c. The vehicle speed sensor (VSS)
What torque converter component is responsible for torque multiplication?
a. The impeller b. The stator c. The turbine d. The torque converter lock-up clutch
b. The stator
