Auto Trans Week1

Question 1

which one of the following statements is true of a torque converter when comparing it with a standard fluid coupling?

Answer 1

a torque converter is capable of multiplying torque.

Question 2

which of the torque converter components is known as the driving member

Answer 2

the turbine

Question 3

which torque converter component is splined to a shaft that connects to the forward clutch of the transmission?

Answer 3

the turbine

Question 4

which of the torque converter components is responsible for torque multiplication?

Answer 4

the pump/impeller

Question 5

what medium is used to transfer energy through a torque converter when it is not in lockup mode?

Answer 5

transmission fluid

Question 6

where is the stator located in a torque converter assembly?

Answer 6

between the pump/impeller and turbine

Question 7

when is Rotary fluid flow at a maximum during torque converter operation

Answer 7

at coupling phase

Question 8

in a torque converter which type of fluid flow has the effect of multiplying torque?

Answer 8

Vortex flow

Question 9

what is the function of split guide rings in a torque converter?

Answer 9

to reduce turbulence

Question 10

in order for torque multiplication to take place in a torque converter which of the following should be true?

Answer 10

the pump/impeller must turn faster than the turbine

Question 11

which of the following is true during the torque converter coupling phase

Answer 11

the turbine speed it’s just slightly slower than the impeller speed

Question 12

at torque converter coupling phase

Answer 12

the lock-up clutch disengages

Question 13

what is the most common lock-up clutch designs used in heavy duty torque converters

Answer 13

piston

Question 14

technician A says that a torque converter with a stall torque ratio of 1.5.1can transmit 75% of engine torque to the transmission it is coupled to. Technician B says that when the engine RPM torque converter impeller RPM and torque converter turbine RPM are all identical the torque converter is operating in rotary flow mode who was correct

Answer 14

?

Question 15

if engine output torque to a torque converter with a stall torque ratio of 2:1 is 1000 lb what would be the maximum converter output torque specification

Answer 15

?

Question 16

technician A says that engine and torque converter impeller should both turn in the same RPM. Technician B says that the torque converter turbine and transmission input shaft should both turn at the same RPM. Who is correct?

Answer 16

?

Question 17

technician A says that bolted torque converters can usually be serviced and repaired. Technician B says that welded torque converter housing can usually be serviced and repaired. Who is correct?

Answer 17

technician A only

Question 18

technician a says that when a truck is stationary and the engine is running at idle. The torque converter behaves like a disengaged clutch, Technician B says that whenever the torque converter impeller is rotating there is output to the transmission. Who was correct?

Answer 18

?

Question 19

which is commonly used to mount a torque converter to the engine crankshaft

Answer 19

a flexplate

Question 20

in which of the following phases would the drive efficiency of a torque converter be at 100%?

Answer 20

at lockup