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automatic transmissions section 1 test:
CH 1, 2, 3
Which of the following DOES NOT describe the purpose of a vehicle's drivetrain? - ✅It increases the power available to the drive wheels. Power is created in the engine (and/or motor) the drivetrain is responsible for taking the power from the engine and transferring it to the wheels. Which of the following can be used to multiply torque? - ✅pulleys, gears levers Which of the following IS NOT a true statement about gear ratios? Note: One of the book answers was eliminated as it was misleading. A high (numerical) ratio allows for greater torque multiplication. - ✅in gear systems, speed reduction means torque decreases The engine's power is transmitted to the transmission through a fluid coupler, called the:
- ✅torque converter Most automatic transmission equipped models use torque converters but there are a few models that have incorporated a start clutch While discussing engine vacuum: Technician A says it always increases as engine load decreases. Technician B says it is highest at deceleration. Who is correct? - ✅both Engine vacuum is used in many of the powertrain control systems to determine the load on the engine Technician A says through selection of the proper gear ratio, torque applied to the drive wheels can be optimized. Technician B says increasing the number of forward speeds decreases fuel consumption, and exhaust emissions. Who is correct? - ✅tech A Technician A says synthetic ATF is normally a darker red than petroleum-based fluid. Technician B says synthetic fluids tend to look and smell burnt after normal use; therefore the appearance and smell of these fluids is not a good indicator of the fluid's condition. Note: This question makes generalizations regarding fluids. Review the section: Primary Function Of Automatic Transmission Fluid on Pages 30-32. - ✅both The critical nature of using the correct ATF cannot be stressed enough based on the complexity and features in current model transmissions. Make sure any fluid used meets all of the manufacturers requirements.
While discussing the purpose of a differential: Technician A says it allows for equal wheel speed while the vehicle is rounding a corner or curve. Technician B says the ring and pinion in the differential multiply the torque it receives from the transmission. Who is correct? - ✅tech B Which gears are best suited for quiet, high-speed, low-thrust applications when heavy loads are applied? - ✅herringbone. The herringbone gears are best suited for quiet, high-speed, low-thrust applications when heavy loads are applied but are also the most expensive and least used in automotive applications. Technician A says 4WD vehicles typically use a transfer case to transfer engine torque to both front and rear driving axles. Technician B says 4WD vehicles normally have two transmissions, two driveshafts, and two differentials. Who is correct? Note: If Tech A's 4WD vehicle is on dry pavement it should be selected to 2WD position (only sending power to the rear drive axle) or drive line wind-up would occur that could damage the drivetrain, and if it is an AWD then Tech A is correct. Tech B says that the 4WD vehicles normally has 2 transmissions which should be wrong but the transfer case is described in the glossary on Page 407 as "an auxiliary transmission" which seems confusing. The correct answer is: Technician A only - ✅tech A While discussing ways to prevent fires: Technician A says all dirty and oily rags should be stored in approved containers. Technician B says all dirty and oily rags should be kept in a pile until the end of the day, and then they should be moved to a suitable container. Who is correct? - ✅tech A Technician A says accidents can be prevented by not having anything dangle near rotating equipment and parts. Technician B says accidents can be prevented by having common sense. Who is correct? - ✅both Technician A says your supervisor should be immediately informed of all accidents that occur in the shop. Technician B says the work area should have a first-aid kit for treating minor injuries. Who is correct? - ✅both Technician A says safety glasses should be worn anytime there is a possibility of an eye injury from working in the shop. Technician B says if regular prescription eye-glasses are worn in the shop, they must be equipped with side shields.
Friction is the resistance to motion of two objects in contact with each other. Sometimes friction is bad (unwanted) and sometimes friction is good (needed). While discussing different types of energy: Technician A says when energy is released to do work, it is called potential energy. Technician B says stored energy is referred to as kinetic energy. Who is correct? - ✅neither While discussing friction in matter: Technician A says that friction is a force that slows or prevents motion of two moving objects or surfaces that touch. Technician B says that friction occurs in liquids, solids, and gases. Who is correct? - ✅both While discussing mass and weight: Technician A says that mass is the measurement of an object's inertia. Technician B says that mass and weight may be measured in cubic inches. Who is correct? - ✅neither When applying the principles of work and force: - ✅If a 50-pound object is moved 10 feet, 500 lbs-ft. of work is produced. All these statements about energy and energy conversion are true, EXCEPT: - ✅Thermal energy may be defined as light energy. While discussing hydraulic systems: Technician A says the use of the larger piston gives the system a mechanical advantage or increase in the force available to do work. NOTE: Assume Technician A is referring to an increase of size of the output piston. Technician B says the multiplication of force through a hydraulic system is directly proportional to the difference in the piston sizes throughout the system. Who is correct? - ✅both To increase mechanical advantage (MA) a smaller input piston could be used, or a larger output piston could be used. Or as Technician B stated the MA is directly proportional to the difference (or ratio) in piston sizes. Technician A says force can be applied to objects by direct contact or from a distance. Technician B says gravity and electromagnetism are examples of forces that are applied from a distance. Who is correct? - ✅both A screw is a simple machine that operates as a(n): - ✅inclined plane Which of the following statements is NOT TRUE? - ✅Permeable substances adsorb fluids. absorb versus adsorb
While discussing automotive fasteners: Technician A says bolt sizes are listed by their appropriate wrench size. Technician B says whenever bolts are replaced, they should be replaced with exactly the same size and type that was installed by the manufacturer. Who is correct? - ✅tech B While adjusting the end clearance of a clutch with a specified clearance of 0.044-0. inch and a measured clearance of 0.075 inch with the existing thrust washer thickness of 0.055 inch: Technician A uses a washer with a thickness between 0.079-0.086 inch to correct the end clearance. Technician B says the proper thickness for the washer is determined by adding the measured clearance to the thickness of the existing washer, then subtracting the specifications from that total. Who is correct? - ✅tech B Technician A says dial indicators are commonly used to measure the backlash of a set of gears. Technician B says dial indicators are commonly used to measure the endplay of a set of gears. Who is correct? - ✅both Dial indicators are commonly used to measure end play, clutch pack clearances, backlash and runout measurements. Technician A says pneumatic power tools require less maintenance than electric power tools. Technician B says cordless electric tools are popular because they work without a cord or hose. Who is correct? - ✅both Technician A says that after an individual passes a particular ASE certification exam, he or she is certified in that test area. Technician B says all of the questions on an ASE certification exam are written as "Technician A and Technician B" questions. Who is correct? - ✅neither pg 87- While discussing the purpose of a torque wrench: Technician A says they are used to tighten fasteners to a specified torque. Technician B says they can be used to provide added leverage while loosening or tightening a bolt. Who is correct? - ✅tech A While discussing the purpose of micrometers: Technician A says micrometers are used to measure the diameter of an object. Technician B says outside micrometers are used to measure the outside diameter of an object, while inside micrometers are used to measure the inside diameter.
Technician B says this low power transfer at idle allows the vehicle to remain stationary at stops without disengaging a clutch like a manual transmission. Who is correct? - ✅both While discussing load-sensing devices: Technician A says the MAP sensor can be used to measure engine load. Technician B says the oxygen sensor can be used to measure engine load. Who is correct? - ✅tech A The O2 sensors are part of the emission/ fuel delivery systems and they help control the correct air/ fuel ratio by monitoring the engines exhaust. While discussing valve bodies: Technician A says the valve body contains the manual shift valve. Technician B says the TCM is attached directly to the valve body in some cases. Who is correct? - ✅both Technician A says the use of throttle actuator control means the throttle is controlled by the ECM. Technician B says the ECM can increase the throttle opening with throttle actuator control to make the shift feel softer. Who is correct? - ✅tech A These advanced adaptive systems help keep vehicle occupants safe by anticipating danger and making adjustments without a driver input. Which of the following statements about planetary gears is NOT TRUE? - ✅The sun gear is often referred to as the internal gear. planetary gear component that is the internally toothed is the ring gear (or annulus gear) While discussing the hydraulic system: Technician A says the transmission's oil pump is the source of all pressures within the hydraulic system. Technician B says the hydraulic system also keeps the torque converter filled with fluid. Who is correct? - ✅both While discussing the torque converter clutch: Technician A says the torque converter clutch is applied by the torque converter clutch relay. Technician B says the torque converter clutch is no longer used on modern vehicles. Who is correct? - ✅neither The torque converter clutch systems used today save fuel by engaging the clutch and reducing or eliminating the slip of the fluid connection when the fluid connection is not needed. While diagnosing noises apparently coming from a transaxle assembly: Technician A says clunking on acceleration or deceleration can be caused by worn inboard CV joints.
Technician B says a clicking noise heard when the vehicle is turning is probably caused by a worn or damaged outboard CV joint. Who is correct? - ✅both Technician A says that a clutch and band application chart shows which transmission components are applied in a particular gear. Technician B says that these charts can be very valuable in diagnosing a transmission problem. Who is correct? - ✅both The technician must determine what the transmission is not doing, and then diagnose the symptom(s) based on what components should be operating in that particular gear range. If a clutch and band chart and a solenoid truth chart are available they are a very important information source.e While discussing the results of an oil pressure test: Technician A says when the fluid pressures are high, internal leaks, a clogged filter, low oil pump output, or a faulty pressure-regulator valve are indicated. Technician B says if the fluid pressure increased at the wrong time, sticking valves or leaking seals are indicated. Who is correct? - ✅tech B Technician A says normal operation of a neutral safety switch provides a quick check for the adjustment of the gear selector linkage. Technician B says the engine should start in PARK and NEUTRAL if the linkage and neutral safety switch are properly adjusted. Who is correct? - ✅both check and confirm proper linkage operation Technician A says low fluid levels in the transmission can cause aerated fluid. Technician B says slippage between shifts can be caused by aerated fluids. Who is correct? - ✅both Aeration of the fluid is air in the fluid. This can be caused by a high or a low fluid level, and also a pump intake leak like from a poor filter seam, a crack in the filter neck, or a cut or bad filter o-ring or seal. Symptoms could be hard shifts, soft shifts, slipping, falling out of gear and delayed or no engagement. Technician A says the transmission cooler cannot be efficient if the engine's cooling system is defective. Technician B says some transmissions also have an inline filter placed in the fluid line going to the fluid cooler. Who is correct? - ✅both While inspecting the condition of a vehicle's ATF: Technician A says if the fluid has a dark brownish or blackish color or a burnt odor much like burnt popcorn, the fluid has been overheated. Technician B says if the fluid has a milky color, engine coolant has been leaking into the transmission's cooler.
Technician A says that in a typical RWD vehicle, the transmission and drive axle are located in a single assembly. Technician B says a transaxle is a single assembly containing the transmission and drive axle. Who is correct? - ✅tech B Technician A says when working around electric cooling fan motors, the power source should be disconnected. Technician B says when the ignition switch is in the off position, it is safe to work around electric cooling fan motors. Who is correct? - ✅tech A Technician A says a frozen battery can be charged to warm it up. Technician B says a frozen battery should be discarded into the garbage. Who is correct? - ✅neither What class of fire would burning oil be considered? - ✅Class B A: ASH B:BOIL C: CHARGE D: DRILLING If you are unfamiliar with a chemical in your shop, you should do which of the following?
- ✅Consult the MSDS When dealing with hazardous waste materials, the goal of your shop should be to recycle these materials as much as possible. Which of the following materials must be recycled? - ✅refrigerants, used oil, ATF Small, positively charged particles called ____________ are located in the nucleus of each atom. - ✅neutrons, protons, electrons Energy in motion is referred to as which of the following? - ✅kinetic energy Technician A says that electrical to thermal energy conversion can be illustrated by the battery providing power to the starter motor. Technician B says that thermal to mechanical energy conversion can be illustrated by the burning of fuel in the engine. Who is correct? - ✅tech B Pi is a constant and is equal to approximately which of the following numbers? - ✅3. Which of the following is the term for the rate at which torque is produced. - ✅horsepower
A liquid's reaction to pressure is the basis for which of the following applications? - ✅hydraulic A worn engine will lose its ability to create the correct vacuum. This will affect which of the following? - ✅engine performance, shift quality, shift timing Which of the following is used to measure the backlash of two gears in mesh? - ✅dial indicator While discussing the application of simple machines. A ________________ is an example of an inclined plane wrapped around a shaft. - ✅a bolt
