In the World Transmission, synchronous speed ties turbine speed to output speed via what factor?

• A. The gear ratio of the oncoming clutch
• B. The final drive ratio
• C. The engine displacement
• D. The vehicle speed

Answer: (A)

The point being tested is how a transmission links the turbine speed to the final output speed before gear engagement. In the World Transmission, this linkage is set by the gear ratio of the oncoming clutch. When a gear is selected, the oncoming clutch connects a gearset so that the turbine must rotate at a speed that matches the output shaft according to that gear ratio. This synchronization prevents gear clash and allows smooth engagement.

Engine displacement isn’t involved in tying turbine speed to output speed, and the final drive ratio affects wheel speed more broadly rather than the turbine-to-output synchronization. Vehicle speed is the result of all gears and drives, not the factor that directly synchronizes turbine and output speeds.

So, the gear ratio of the oncoming clutch is the factor that ties turbine speed to output speed.