310T Drive Trains Practice Test

These questions are part of the practice quiz. Start practicing

• If the carrier is the output member of a planetary gear set, the resulting power flow is always a forward reduction or underdrive ratio.
• Which component in a torque converter is described as being splined to the input shaft and positioned very close to the impeller without touching it?
• In reverse, the carrier is the held member of the planetary gear set. Who is correct about the behavior?
• Unexpected quickness in the piston movement can lead to ________.
• Dirt entering the transmission can lead to which issue?
• Which term describes the phase where the torque path is directly coupled during lock-up?
• Reaction plates are normally splined to the which component?
• Which statement about torque converter stall characteristics is correct?
• What is the primary purpose of the trimmer valve in Allison transmissions?
• Where does maximum torque multiplication occur in a torque converter?
• Two technicians are checking the fluid level in an automatic transmission. Technician A says they should check the level while the vehicle is running, as some hydraulic circuits drain back to the sump when the engine is off. Technician B says checking the level while the engine is off and the transmission pump is not turning gives a more accurate reading on the transmission dipstick. Who is correct?
• Which technicians' statements about rotating vs stationary clutches are correct?
• Automatic transmissions create power flows through a combination of planetary gears and what other devices?
• A pump experiencing cavitation will usually be extremely____________.
• In the World Transmission, the overdrive knock-down valve actually reduces main pressure in all ranges except which?
• Technician A says that all of the ratios in the Simpson gear set are simple planetary power flows using only one of the two planetary gear sets. Technician B says all are simple power flows except first gear, which is a compound flow that uses both the front and rear planetary gear sets. Who is correct?
• The only path of power out of the transmission is through the rear ______________.
• In planetary gear theory, the component that can rotate under load even without a dedicated control device is known as the ______.
• Which statement about fluid couplings and torque converters is correct?
• Which sources provide data to the transmission ECU for shift decisions?
• The ______ circuit can be used to raise or boost main or control pressure in automatic transmissions.
• Which statement about programmed vs modulated lock-up strategies is correct?
• The rear half of the torque converter shell is shaped like a hollowed-out donut and is called a _______.
• In heavy-duty applications, which is typically stronger for torque transmission?
• An automatic transmission that has a disconnected or completely blocked modulator valve vacuum line would exhibit which of the following problems?
• During idle in Park or Neutral, which statement best describes the relative motion of the impeller, stator, and turbine?
• What power flow will result from a planetary gear set if the carrier is the input member, the ring gear is held, and the sun gear is the output?
• Which hydraulic source applies the transmission's clutches?
• In the described range flows, Technician A says second range is a compound power flow involving the center and front planetary gear sets. Technician B says third and fourth ranges are simple planetary flows involving only the center planetary gear set. Who is correct?
• Which NFPA-defined condition requires taking the vehicle out of service?
• Which statements are true regarding the ECU’s interpretation of sensor signals?
• Slipping clutches can usually be verified by conducting a _________ test.
• Which of the following cannot be coupled directly to the engine crankshaft or to the flywheel?
• Maximum forward reduction is obtained when the sun gear is the input because a smaller input gear yields lower output speed.
• Which gear set name is associated with originally three speeds and later possible overdrive with minor modification?
• The period of monitoring and adjusting during a shift in progress on a World Transmission is known as?
• What would be the second check on the newly reassembled torque converter?
• Two technicians discuss the manual selector valve. Technician A says it directs fluid pressure to the forward clutch and to the neutral/forward regulator circuit when reverse is selected. Technician B says it directs fluid pressure to the fourth clutch circuit in neutral or any forward range. Who is correct?
• The torque _____________ phase occurs any time the torque converter is increasing the engine's torque output to the transmission's input shaft.
• Which statements about automatic transmissions are correct?
• During closed-loop control, the TCU is controlling shift quality by doing which of the following?
• What is the oil drain interval for an Allison transmission is equipped with prognostics?
• Failed mounts can lead to which consequence?
• Which option is commonly regarded as the strongest control device for planetary gear sets?
• Which symptom is most commonly associated with cavitation in a hydraulic pump?
• Which technician is correct about shift softness related to throttle percentage in ATEC and CEC systems?
• Allison's current transmissions are __________ controlled.
• What term describes the point at which the difference between turbine and impeller speeds is greatest?
• When the carrier is the held member, the result is always ___________ and the carrier pinions act as idler gears.
• All of the clutches except forward have a what type of valve in their apply circuit?
• According to power flow, the 'held' component in a power flow has to be stationary. According to Technician B, the direction and speed of a rotating 'held' component determines if the motion increases or decreases the ratio. Who is correct?
• When you remove a transmission oil pan, you find black or brown fibrous dust in the oil and accumulated in the oil pan. What would you recommend as service for this vehicle?
• The stator wheel's axial position is usually controlled by ____________.
• In automatic transmissions, which statement about gear ratios and torque multiplication for heavy loads is true?
• What term describes the power flow when two interconnected planetary gear sets operate together?
• In Allison ATEC/CEC transmissions, what replaces the modulator valve used in hydraulically controlled transmissions?
• What transmissions use the torque converter as an integrated retarder to augment the vehicle brakes?
• Allison transmissions use the __________ valves to slow down the shift slightly to make the engagement more gradual.
• Which company is by far the world-leading manufacturer of electronically controlled automatic transmissions?
• What type of valve is a spool valve mounted in a rotating tube?
• To ensure there is sufficient transmission fluid to run the vehicle, at what temperature range should the fluid be when checking the level?
• Which of the following will produce a direct ratio from a planetary gear set?
• Torque converters since the 1980s include lockup clutches that lock the turbine to the converter shell to eliminate slippage. Which statement is correct?
• When installed in the transmission, what drives the transmission oil pump gears?
• Differential drive with wandler means the input torque during DIWA operation is split between which?
• Why does the hydraulic system prioritize filling the torque converter?
• In the World Transmission design, what module contains all of the transmission's internal components?
• Which term describes air bubbles in transmission fluid caused by low pressure?
• In the Allison AT series, if the trimmer valve is stuck open, what is the likely outcome for the clutch controlled by that trimmer?
• Friction modifiers in transmission fluids are additives that change what?
• In the Allison fourth-generation control, which statement about the overdrive knock-down valve is correct?
• What are the two phases of torque converter operation?
• Which statement about downshifts is correct?
• Severe transmission damage can occur if the transmission fluid is?
• The torque converter shell or housing is physically attached, though not directly, to the __________.
• When the fluid in an Allison ATEC/CEC transmission is extremely cold, below -25 degrees Fahrenheit, the transmission controller allows which of the following?
• Upshifts are made by governor pressure and modified by modulator pressure. Which statement describes this correctly?
• In planetary gear trains, which option can be used to hold stationary members and is sometimes described as capable of external hold?
• On Allison transmissions, which valves direct clutch apply pressure to the clutch packs?
• Transmission fluid must be handled with extreme care to prevent the entry of what?
• Aladin software is used to diagnose which transmission family?
• How many multi-disc hydraulic clutches are there in the transmission?
• Dirt entering the transmission commonly causes which problem?
• In a planetary gear set, if the carrier is the output member, the power flow is forward reduction or underdrive.
• In a planetary gear set where the carrier is the input component, the sun gear is the held component, and the ring gear is the output component, the result is minimum forward reduction. Who is correct?
• Two technicians are discussing the Simpson gear set. Technician A says the front planetary ring gear and the common sun gear are the only two inputs. Technician B says the high and reverse clutch supplies rotational power to the sun gear when the clutch is applied. Who is correct?
• In the World Transmission, which component’s role is evidenced by the use of the P-1 sun gear as part of the forward power path?
• Which control opens the solenoid to allow fluid flow to control clutch application?
• What gear set uses a separate planetary gear set as the input to a Ravigneaux gear set and produces six forward speeds, including two overdrives and one reverse?
• In the Fifth Generation electronic control of the World Transmission, which is the controller area network connection on the vehicle?
• If the carrier is the held component and the sun gear is the input member, the result is reverse overdrive.
• After rebuilding a transmission, which technician is correct about resetting the controller to slow adaptive?
• In Caterpillar CX transmissions, which statement about clutch control is correct?
• What type of noises that seem to emanate from the converter, but do not change, could indicate transmission front pump problems?
• The Transmission ECU does not allow shifts into any gear range if the fluid temperature is below -25°F (-32°C). If the fluid temperature rises to 270°F (132°C), the shift control check light is illuminated and a code is stored in the ECU memory. Which statements are correct?
• Regarding hold regulator valve and trimmer valve roles, which technician is correct?
• If the throttle or modulator valve sticks in the closed throttle position, what symptom is most likely?
• Which planetary gear control element is commonly adjustable from outside the transmission housing?
• Which device prevents the vehicle from being started if the transmission is in any drive gear?
• Which component controls the flow of pressurized hydraulic fluid to apply the clutches necessary to attain each range?
• In the Simpson gear set, what does the high and reverse clutch do when applied?
• Which valve slows down the shift to make engagement smoother?
• The programmable read-only memory (PROM) chip in each ECU is not replaceable. Technician B says the PROM chip is the only serviceable part in the ECU. Who is correct?
• After servicing a torque converter and reassembling it, which checks are required?
• In a transmission with a torque converter, which drives the transmission oil pump gears?
• Why do we sometimes use a roller-type one-way clutch to hold a member of the planetary gear set?
• In a DIWA transmission, the input torque is split between mechanical drive and which other operation?
• Which gear set uses two interconnected planetary gear sets sharing a common carrier capable of producing four forward ratios (including one overdrive) and one reverse?
• The apparent outward force on a rotating mass is known as what?
• Which combination statements about the hydraulic system are true?
• The World Transmission can obtain four different neutral powerflows based on ________.
• In a planetary gear system, what component carries the planet gears and can be fixed or rotated?
• Which valve regulates the main pressure used to apply the clutches?
• In a clutch arrangement where reaction plates are splined to the inside of the case and friction plates to the held component, what is this clutch type called?
• The transmissions described rely on which control method to operate clutches?
• Why do manufacturers use a one-way clutch in a planetary gear set power flow?
• With what type of lock-up will the transmission enter lock up at any time—even in first range—as long as certain criteria are met?
• What type of solenoids allows fluid flow while deenergized and stop flow when energized?
• In ATEC and CEC systems, an accumulator used to smooth out the shift process is called what?
• An engine requires a rotating mass to build _________ to keep it running between power pulses.
• Which statement best describes the effect of the lock-up clutch on the torque path?
• For a planetary gear set with sun teeth 36 and ring teeth 84, two technicians debate the ratio when the sun is held and ring is input with carrier as output? The sun 36 teeth and ring 84 teeth. Who is correct?
• What does the hold regulator valve do if pressure suddenly drops?
• Which arrangement yields a direct drive, i.e., a 1:1 speed ratio, in a planetary gear set?
• In ATEC and CEC systems, which technician is correct about the trimmer regulator valve control and shift softness?
• Which of the following cannot be coupled directly to the engine crankshaft or to the flywheel?
• In the Simpson planetary gear set, the high and reverse clutch that inputs to the sun gear has a ______ attached to it.
• Approximately how much fluid is not replaced during a typical fluid and filter change on an automatic transmission?
• ________________ is the apparent force by which a rotating mass tries to move outward away from its axis of rotation.
• Loss of governor pressure would cause which symptom?
• Which option correctly identifies the three broad areas of transmission failures?
• Which part of the transmission ECU is described as the only serviceable component?
• A hydraulic retarder is used to supplement the vehicle braking system and is electronically controlled. Which technician is correct?
• When the clutch reaction plates are splined directly to the inside of the transmission case and the friction plates are splined to the component we want to hold, this type of clutch is called a ___________ clutch.
• Which term defines the duration, in a 1/63-second window, that current is allowed to energize the solenoid?
• In Allison hydraulically controlled transmissions, which statements are correct?
• Where does all hydraulic flow begin?
• Which capability enhances maintenance planning by predicting potential failures in Allison systems?
• Automatic neutral at standstill is an optional feature of what type of transmission?
• Which statement about lock-up clutch design is correct?
• Which device serves as a one-way clutch in some planetary gear trains?
• The type of noise described as emanating from the converter that could indicate front pump problems is which?
• Which occurs because of spring pressure and the lack of governor and modulator pressure?
• Which end-of-shift test is used to confirm the on-coming ratio after synchronous speed is detected?
• The power flow through two interconnected planetary gear sets is best described as _________ power flow.
• What is typically used between the torque converter and the engine flywheel or crankshaft in a standard installation?
• When a World Transmission (WT) is in reverse, the input power from the engine enters the gear train through which of the following?
• What is the primary purpose of the lock-up clutch in a torque converter?
• Two technicians are altering shift points in an Allison hydraulically controlled transmission. Technician A says this can be done by changing the spring tension on the modulator valve. Technician B says it can be accomplished by adjusting the spring tension on the individual shift signal valves. Who is correct?
• Which is NOT a function of the main pressure regulator valve?
• What gear set was originally a three-speed gear set able to provide an overdrive with minor modification?
• Where is the torque converter located in the DIWA transmission?
• Which of the following is the strongest planetary gear train control device?
• In simple planetary gear sets, what revolves around the sun gear like planets in our solar system?
• Which statement about the lubrication circuit is correct?
• The position of the trimmer regulator valve is controlled by modulator pressure. During closed throttle or light operation, modulator pressure is ___________.
• With planetary gears, even without a control device, the component can act as a(n) ________ if it requires a load to turn.
• Which of the following is considered the strongest planetary gear train control device?
• Using fluids with friction modifiers in transmissions that are not designed for them can lead to ____________.
• During which torque converter phase does the engine's torque output increase at the transmission input?
• What type of lock-up allows the lock-up timing to be affected by load and driver input conditions?
• During a line pressure test on an electronically controlled automatic transmission, line pressure is found to be low. Which technician is correct?
• What type of torque converter is the heart of the DIWA transmission's operation?
• In the Allison MT series, the converter working pressure is set at approximately __________.
• To achieve direct drive or a 1:1 ratio, any two of the planetary gear components must be input at the same speed.
• Which statement describes a valid input path for engine power into the World Transmission gear train during forward operation?
• Which of the following is the driving member of the torque converter and is part of or attached to the shell?
• Which device is responsible for directing hydraulic fluid to apply the transmission clutches for different ranges?
• The amount of time during each 1/63 of a second that current flows to the solenoid is defined as what?
• Automatic neutral at standstill is an optional feature of which transmission type?
• Which statement about MPRV is correct?
• What type of gears will be noisier in operation, but they create no axial thrust?
• Which of the following lock-up clutch components is usually located in the front half of the converter shell?
• What is designed to hold sufficient fluid for operation when the fluid is fully deployed throughout the transmission's hydraulic circuits?
• During forward reduction power flows in a planetary gear set, the carrier is the output member. Additionally, maximum forward reduction is obtained if the sun gear is the input, as a smaller input gear always gives a lower output speed. Who is correct?
• Parasitic loss is an unnecessary load on the engine that decreases __________.
• On Allison transmissions, the ______ valves direct clutch apply pressure to the clutch packs.
• Transmissions that use which type of valves can develop a pinhole in the modulator's diaphragm?
• Which of the following defects of the transmission shall cause a vehicle to be taken out of service according to NFPA?
• One-way clutches lock to allow torque to be applied during acceleration, and then unlock to break the connection on deceleration, allowing the vehicle to gently coast to a stop. Technician B says brake bands and sprag- or roller-type one-way clutches are stronger than hydraulic clutches. Who is correct?
• If the carrier is the held component in a planetary gear set and the sun gear is the input member, the result is a reverse overdrive.
• The hydraulic clutch can only be used to hold planetary gear components stationary. Technician B says the brake band is typically the only type of powertrain control device used in heavy-duty applications. Who is correct?
• Technician A says the Sprag-type one-way clutch operates by using two sets of plates known as the friction plates and reaction plates. Technician B says that when used to input the gear set, the hydraulic clutch is called a rotating clutch. Who is correct?
• In a simple planetary gear set, which gear acts as the sun around which others orbit?
• In Allison four-speed transmissions, technicians discuss the number and arrangement of planetary gear sets. Who is correct about the structure described as three interconnected planetary gear sets named the front, center, and rear?
• The position of the trimmer regulator valve is controlled by modulator pressure. During closed throttle or light operation, modulator pressure is ___________.
• Which statements about the coupling phase are correct?
• What is the purpose of the transmission temperature and oil level sensors?
• What type of lock-up allows the lock-up timing to be affected by load and driver input conditions?
• The stall test can be used to determine the condition of which drivetrain components?
• Which pressure provides a speed-sensitive signal to the control valve body?
• Which of the following could cause failure of an automatic transmission?
• What test is performed at the end of a shift in progress after synchronous speed has been detected and assures that the transmission attained the desired range?
• Which of the following is NOT one of three ways that the engine's rotational power can be transmitted to the gear train in a World Transmission?
• Which component prevents starting the engine if the transmission is in drive gear?
• Which of the following planetary gear train control devices can be used to hold members stationary?
• After exiting the torque converter, where does the transmission fluid usually flow?
• Allison computer software has been equipped with ___________________.
• In a planetary gear set, the minimum number of tooth sets transmitting torque is which value?
• What would be the complaint or symptom in an Allison AT series transmission if a trimmer valve were stuck open?
• All of the main hydraulic pressure used to apply clutches flows through which valve?
• The shift selector valve supplies main pressure to the ___________valve, which directs that pressure to the corresponding shift signal valve depending on the driver's gear selection.
• Which statement about current Allison transmissions is true?
• During a shift, the World Transmission enters closed-loop control between which of the following points?
• The torque converter places enormous load and shear forces on the transmission fluid that create tremendous amounts of __________.
• Would high oil level lead to transmission slippage and why or why not?
• The speed-sensitive signal to the control valve body is provided by which hydraulic pressure?
• When diagnosing problems with automatic transmissions, what test would you perform to verify a customer complaint?
• Which of the following could lead to pump cavitation?
• After a rebuild, which approach leads to faster convergence of shifts?
• In the World Transmission, which component’s gear arrangement is explicitly used to transfer power to the gear train in forward operation and is not the P-2 ring gear?
• During a stall test, which finding could indicate a stuck or seized stator?
• Cavitation is the formation of air bubbles in the transmission fluid as a result of what condition?
• In an Allison transmission, which valve component has cams adjustable to change shift points?
• In an Allison transmission, the ______ valve component has cams that can be adjusted to change shift points.
• The shift selector valve supplies main pressure to the ___________valve, which directs that pressure to the corresponding shift signal valve depending on the driver's gear selection.
• Which lock-up clutch design is described as most popular in the truck market?
• If the sun gear is the output component, what result is achieved?
• For smoke-controlled engines, which stall test is required?
• The torque converter is used as an integrated retardation feature in which transmission type?
• As soon as the vehicle is started (in neutral), main pressure is established by the ______________.
• Planetary gear sets' epicyclic design allows them to cancel out most of which loads?
• Which technician correctly described a feature of the Voith DIWA transmission?
• In the Allison ATEC/CEC transmission, solenoids are used to do which of the following?
• An engine requires a rotating mass to build _________ to keep it running between power pulses.
• How many planetary gear sets are used in the six-speed World Transmission?
• As soon as the vehicle is started (in neutral), main pressure is established by the ______________.
• Do latching solenoids stay open without continuous power in Allison ATEC/CEC transmissions?
• While the transmission is operating, the flex plate that connects the torque converter to the engine crankshaft is constantly flexing and is subject to _____________.
• If a simple planetary gear set has 24 teeth on the sun gear and 60 teeth on the ring gear, what will be the ratio if the sun gear is input, the ring gear is held, and the carrier is output?
• In order for the torque converter to obtain maximum torque multiplication, the stator must be __________ to redirect the fluid leaving the turbine.
• If the carrier is the held or reaction member of the gear set, then the results will always____________.
• In the World Transmission, synchronous speed ties turbine speed to output speed via what factor?
• Allison ATEC/CEC transmissions use solenoids as well as spool valves to control fluid flow. Latching solenoids do not stay in an open position unless they have a constant voltage supply. Who is correct?
• The seventh ratio is called ___________.
• Which circuit can be used to raise or boost main or control pressure?
• ________ is the control used to actually open the solenoid to allow fluid flow to control the clutch application.
• What is the only serviceable part of the transmission electronic control unit (ECU)?
• In the described planetary gear arrangement, a single rotation of the carrier causes the ring gear to rotate: a) less than one revolution, b) exactly one revolution, c) one revolution plus the sun gear teeth, d) two revolutions. Which option is correct?
• In ____________flow the fluid being thrown outward by the centrifugal force is again thrown forward by the torus shape of the rear half of the shell.
• In ATEC and CEC systems, which component serves as an accumulator to smooth the shift process?
• If the carrier is the held component and the ring gear is input, the result is reverse reduction.
• All of the transmission's hydraulic circuits are fed by the __________circuit.
• If engine rpm does not stabilize and continues to rise or the temperature rises above the maximum levels, what test should be stopped immediately?
• What term is used for the ratio where output speed equals input speed, resulting in no net speed change?
• What would be the output on the ring gear of a planetary gear set when the carrier is input and the sun gear is the held component?
• Second range is described as a compound power flow involving which gear sets?
• Planetary gears are also known as ____________ gears.
• In neutral, which clutch is applied according to the clutch application chart?
• In Lepelletier gear arrangements, the input to the Ravigneaux section comes from what?
• Technician A says the transmission ECU is the brains of the control system, processing data from the driver and the transmission and deciding when shifts should occur. Technician B says the transmission ECU issues commands to solenoids inside the transmission to obtain the desired range. Who is correct?
• The torque converter housing module in the six-speed World Transmission houses the electric solenoids and valves to control the transmission. Which technician is correct?
• What type of systems restricts the engine fueling until turbo boost is high enough?
• During torque converter operation, the coupling phase is primarily related to torque demand and may occur at various vehicle speeds. True or False?
• In fail-safe operation, which statement about C-1 and C-2 latch valves and the normally open and normally closed solenoids is correct?
• What is meant by synchronous speed as it relates to the Allison World Transmission TCU?
• The most important check for any automatic transmission complaint is transmission __________.
• According to NFPA, which transmission defect requires taking the vehicle out of service?
• A stall speed significantly higher than the specified value typically indicates which problem?
• In a planetary gear set there are at least how many sets of teeth transmitting the torque?
• During a routine automatic transmission fluid change, how much fluid is typically not replaced?
• Which software diagnostic program does the DIWA transmission use?
• Which statement about clutch rotation is accurate?
• In Allison AT, MT, and HT four-speed transmissions, the first clutch is applied only in which state?
• Is it true that both statements about impeller driving turbine and lock-up 1:1 drive are correct?
• What type of harness connects the shift selector to the ECU and contains the bi-directional communications connector to allow the transmission ECU to 'talk' to Detroit Diesel DDECsystems, the diagnostic data link (DDL) connector?
• In which condition does one complete rotation of the carrier drive the ring gear one complete turn plus the sun gear tooth count?
• The TC-10-TS model is targeted at class 6 delivery vehicles; which technician is correct about its claimed benefits?
• What happens if you are driving a vehicle with an ATEC/CEC transmission in fourth range and electrical power to the transmission TCU is lost?
• If a modulator valve vacuum line is disconnected, the transmission would upshift at what speeds?
• Two technicians are evaluating a shudder on engagement of the lock-up clutch. Which statement is correct about the potential causes?
• What effect does the lock-up clutch have in the torque converter's operation?
• To obtain an accurate transmission fluid level reading, the fluid should be within which temperature range?
• Two technicians interpret stall test results: Technician A says a low stall speed is almost always caused by a slipping clutch inside the transmission. Technician B says an extremely high stall speed could indicate that the stator may be freewheeling. Who is correct?
• In the Allison ATEC/CEC transmissions, which device replaces the modulator valve used in hydraulically controlled transmissions?
• What is meant by friction modifiers when discussing transmission fluids?
• Which statement about ZF EcoMat and Ecolife is true?
• Which hydraulic pressure provides a load signal to the control valve body?
• Besides elevated temperature, which condition could contribute to pump cavitation?
• Where is the torque converter of the DIWA transmission located?
• What is considered the most important diagnostic check when investigating an automatic transmission complaint?
• High hydraulic pressure could indicate which of the following?
• In a scenario with ring input, sun held, carrier output, and given tooth counts, Technician A claims the ratio is 1.43:1. Who is correct?
• Which mechanism is commonly used to control the axial position of the stator wheel in a torque converter?
• The stator wheel is only unlocked during what phase?
• Which statement correctly describes the physical relationship between the turbine and impeller in a torque converter?
• Which lock-up component is usually located in the front half of the converter shell?
• In a torque converter with a modulated lock-up strategy, when does the lock-up clutch primarily engage?
• Which of the following is the third broad area of transmission failures?
• What is meant by pump cavitation?
• Between the torque converter and the engine crankshaft, which component is used to connect them?
• Which is a possible cause of a whining torque converter noise not changing with lock-up engagement?
• Which statement is correct about secondary modulation and sub-modulation in solenoid control?
• What fluid is the life blood of all automatic transmissions?
• Which input component tends to produce forward overdrive rather than forward reduction when other components are fixed?
• Which pressure provides the load signal to the control valve body?
• Who is correct about the control valve body's role and structure?
• Which of the following allows equipment to start up virtually load free?
• Which gear in the Simpson set uses a compound power flow that involves both the front and rear planetary gear sets?
• When the engine is idling and the transmission is in park or neutral, what is happening inside the torque converter regarding component speeds?
• When flushing cooler lines, pay attention to the maximum _____ recommended by the manufacturer.
• In NFPA terms, a transmission overheating in any range should lead to removal from service. Which option reflects this condition?
• In the six-speed World Transmission, the three planetary gear sets are named P-1, P-2, and P-3. Which technician is correct?
• The component driving the fluid inside the torque converter and attached to the shell is which?
• The rear half of the torque converter shell is shaped like which object?
• Which valve type is used in the apply circuits of all clutches except the forward clutch?
• If the stall speed is 600 rpm or more lower than specification, which problem is most likely?
• Two statements: A says there are two multidisc hydraulic clutches; B says the forward clutch holds components stationary when applied. Who is correct?
• Which statement about the transmission hydraulic system is correct?
• Two technicians examine the clutch application chart. Which one correctly states: in neutral, only the first clutch is applied?
• Which of the following planetary gear train control devices can sometimes be adjusted from the outside of the transmission?
• During a stall test, if the transmission fluid does not cool down during the cool-down phase, which technician is correct?
• Where does the oil exiting the torque converter typically go for cooling?
• Which of the following power flows gives the maximum forward reduction in speed but the maximum increase in torque?