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WorksheetsDrivetrain week 1
Total questions: 20
Worksheet time: 10mins
Which set correctly lists common drivetrain layouts used in passenger vehicles?
RWD, FWD, 4WD, AWD
RWD, CVT, LSD, AWD
FWD, PTO, TCS, 4WD
AWD, ECU, ABS, RWD
Which components are housed within a solid rear-axle assembly?
Planetary gears, sun gear, ring gear
Clutch plates, pressure plate, release bearing
Final drive gears, differential gears, axle shafts
Calipers, pads, rotors, brake hoses
When a vehicle with a solid rear axle accelerates, what happens to the pinion nose and why is this important for service?
Pinion nose oscillates randomly, causing misfire
Pinion nose stays neutral, preventing axle wrap
Pinion nose rotates upward, altering driveline angle
Pinion nose rotates downward, reducing tire load
Which component allows a rear-wheel driveshaft to change length as the suspension moves?
Universal joint with needles
Rigid coupling without play
Slip yoke that slides axially
Fixed flange with bolts
A sliding spline driveshaft is best described as which configuration?
Single solid tube without joints
Chain-driven torque tube layout
Two-piece shaft that slides on itself
Fixed-length shaft with flanges
What is a primary characteristic and drawback of a universal joint (U-joint) in a driveshaft?
Reduces torque while increasing durability
Only allows axial sliding with long life
Prevents angle changes and lasts indefinitely
Transmits full torque but can wear quickly
How is torque distributed to the wheels in a typical front-wheel-drive vehicle?
Two half shafts to the front wheels
One long driveshaft to rear wheels
Geartrain to all four wheel hubs
Chain drive to both rear axles
Which material is commonly used to construct RWD driveshaft tubing?
Hardened cast iron pipe
Carbon fiber composite only
Steel or aluminum tubing
Brass or bronze tubing
Some one-piece driveshafts may use flexible rubber joints. What is their primary function?
Replace the pinion gear engagement
Lock the shaft to prevent slip entirely
Increase shaft torsional stiffness significantly
Provide flexibility and vibration isolation
Where does the front U-joint on a typical RWD driveshaft connect?
Slip yoke splines at transmission output
Engine crankshaft flange at rear
Pinion drive gear inside the carrier
Wheel hub flange at left rear wheel
If a rear U-joint fails at the pinion companion flange, which symptom is most likely?
Engagement of front wheel assist mode
Improved fuel economy at highway speed
Immediate increase in cooling efficiency
Loss of torque to the differential input
Which pair correctly matches shaft type and wheel set powered?
Half shafts → rear wheels in RWD
Axle shafts → front wheels in RWD
Driveshafts → front wheels in FWD
Half shafts → front wheels in FWD
Which component is most likely included in the structure of a common U-joint?
Planet gear set
Hydraulic vane rotor
Friction clutch plates
Needle bearing caps
Which symptom most commonly indicates U-joint wear?
Harsh steering wheel return
High-pitched alternator whine
Clunk during takeoff and shifts
Soft brake pedal feel
Which feature differentiates CV joints from U-joints in terms of velocity behavior?
CV joints need no lubrication
CV joints vary speed every 90°
CV joints keep constant velocity
CV joints depend on slip yokes
Flexible couplers primarily allow which driveline characteristic?
High-frequency vibration amplification
Axial length compensation of the shaft
Large angular misalignment under load
Minimal angle change at the final drive
What is the main function of a center support bearing in a two-piece driveshaft assembly?
Increase rotational speed of the shaft
Support the shaft and reduce vibration
Transmit torque to the differential
Lock the driveshaft in place
Which type of joint is most commonly used at the wheel end of a front-wheel-drive half shaft?
Double cardan joint
Solid flange joint
Flexible rubber coupling
Tripod CV joint
What is a likely consequence of a severely out-of-balance driveshaft?
Excessive vibration at certain speeds
Improved fuel efficiency
Increased brake pedal firmness
Reduced engine oil pressure
What is a common sign of a failing center support bearing in a two-piece driveshaft?
Sudden loss of engine power
Noticeable vibration at moderate speeds
Brake warning light activation
Increased steering effort
