automatic transmissions section 1 test: CH
1, 2, 3, With Complete Verified Solution
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
1, 2, 3, With Complete Verified Solution
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
