CTE Transmission & Drivetrain Systems 5

Question 1

What is overdrive in the context of an automotive transmission?

Accepted Answer

A gear ratio greater than 1:1 where the output shaft spins faster than the input shaft

Answer

Overdrive is a gear ratio less than 1:1 (e.g., 0.75:1), allowing the output shaft to spin faster than the input, reducing engine RPM at highway speeds for better fuel economy.

Question 2

Which drivetrain layout places the engine, transmission, and drive axle all in the front of the vehicle?

Accepted Answer

Front-wheel drive (FWD)

Answer

FWD vehicles package the engine, transaxle (transmission + differential), and driven wheels all at the front, improving packaging efficiency and traction in adverse conditions.

Question 3

A student notices a dark brown, burnt-smelling automatic transmission fluid during a routine inspection. What does this most likely indicate?

Accepted Answer

Overheating or clutch material contamination requiring fluid replacement and possible rebuild

Answer

Dark, burnt ATF indicates thermal degradation or clutch material contamination, which requires immediate fluid service and inspection for internal damage.

Question 4

What is the purpose of transmission cooler lines in an automatic transmission system?

Accepted Answer

Route hot ATF to a cooler (radiator or separate unit) to prevent overheating

Answer

Transmission cooler lines carry hot ATF to a heat exchanger in the radiator or an external cooler, dissipating heat generated by clutch and torque converter operation.

Question 5

Which component connects the two halves of a split driveshaft and supports the shaft midpoint on long-wheelbase vehicles?

Accepted Answer

Center support bearing (carrier bearing)

Answer

A center support bearing, mounted to the vehicle chassis, supports the midpoint of a two-piece driveshaft to prevent vibration and whip on longer vehicles.

(CTE) Certified Teacher Career and Technical Education Practice Test

(CTE) Certified Teacher Career and Technical Education Practice Test

CTE Transmission & Drivetrain Systems 5