Practice Exam Questions And Correct

ASE A3 Manual Drivetrain & Axle Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary function of a clutch in a manual drivetrain?
• To increase engine power
• To transfer torque to the wheels
• To engage and disengage the engine from the transmission
• To lubricate the flywheel

Rationale: The clutch allows the driver to temporarily disconnect the

engine from the transmission to change gears without stalling the engine.

• What is the main purpose of a flywheel in a manual transmission

system?

• To provide gear reduction 1 / 4

• To transfer torque to the driveshaft
• To store rotational energy and smooth engine pulses
• To engage the differential

Rationale: The flywheel stores rotational energy from the engine and

helps maintain smooth rotation of the crankshaft.

• Which type of gear is commonly used in manual transmission input

and output shafts?

• Bevel gears
• Worm gears
• Spur or helical gears
• Planetary gears

Rationale: Spur and helical gears are used for smooth power transfer

and durability in manual transmissions.

• What is the primary function of a synchronizer in a manual

transmission?

• To lock the driveshaft
• To match gear and shaft speeds during shifting
• To lubricate gears
• To engage the clutch automatically

Rationale: Synchronizers reduce gear clash by matching the speed of

the gear to the shaft before engagement.

• Which symptom indicates a worn clutch disc?
• Grinding noise while turning 2 / 4

• Slipping during acceleration
• Vibration in the steering wheel
• Leaking differential fluid

Rationale: A worn clutch disc cannot fully engage, causing the clutch

to slip under load.

• What type of lubricant is recommended for hypoid gears in a rear

axle?

• Motor oil
• Gear oil with extreme pressure (EP) additives
• Hydraulic fluid
• Automatic transmission fluid (ATF)

Rationale: Hypoid gears require EP gear oil because of high sliding

contact between the gear teeth.

• Which component allows the drive axle to compensate for suspension

movement?

• Universal joint
• Differential lock
• CV joint or U-joint
• Transfer case

Rationale: CV (constant velocity) joints or U-joints allow the axle to

transmit torque while accommodating changes in suspension geometry. 3 / 4

• What is the function of a differential in a rear-wheel-drive vehicle?
• To increase engine power
• To engage the parking brake
• To allow wheels to rotate at different speeds
• To adjust tire pressure automatically

Rationale: The differential allows the inner and outer wheels to

rotate at different speeds, especially during turns.

• Which type of manual transmission requires double clutching for

smooth downshifts?

• Synchromesh
• Non-synchronized transmission
• Automatic transmission

D. CVT

Rationale: Non-synchronized transmissions require double clutching

to match gear speeds before engagement.

• What is the main purpose of a pilot bearing?
• To support the driveshaft
• To support the transmission input shaft in the flywheel
• To reduce friction in the differential
• To lock the clutch disc in place

Rationale: The pilot bearing supports the input shaft, ensuring

smooth rotation when the clutch is disengaged.

• / 4