CTE Transmission & Drivetrain Systems 4

Question 1

What causes shudder or vibration in an automatic transmission at highway speeds?

Accepted Answer

Torque converter clutch slipping or contaminated fluid

Answer

A slipping or worn torque converter lockup clutch, or contaminated ATF, commonly causes a shudder felt at steady highway speeds when the converter clutch engages.

Question 2

What does a higher numerical axle ratio (e.g., 4.10:1 vs. 3.08:1) provide?

Accepted Answer

More torque multiplication and acceleration but lower top speed

Answer

A numerically higher axle ratio multiplies torque more aggressively, improving towing and acceleration capability but at the cost of fuel economy and top speed.

Question 3

Which type of fluid is specifically required for most modern automatic transmissions?

Accepted Answer

Automatic Transmission Fluid (ATF) of the specified type/specification

Answer

Automatic transmissions require ATF formulated with specific friction modifiers, detergents, and viscosity characteristics that differ by manufacturer specification.

Question 4

When a manual transmission 'pops out of gear' while driving, the most likely cause is:

Accepted Answer

Worn detent springs or synchronizer hubs

Answer

Worn detent springs or damaged synchronizer hub teeth allow the shifter to move out of engagement under load, causing the transmission to jump out of gear.

Question 5

What is the function of a viscous coupling in an all-wheel-drive system?

Accepted Answer

Transfers torque between axles based on speed differential using viscous fluid shear

Answer

A viscous coupling uses silicone fluid that thickens under shear stress to automatically transfer torque to the axle that has less slip.

(CTE) Certified Teacher Career and Technical Education Practice Test

(CTE) Certified Teacher Career and Technical Education Practice Test

CTE Transmission & Drivetrain Systems 4