Is it true that both statements about impeller driving turbine and lock-up 1:1 drive are correct?

Is it true that both statements about impeller driving turbine and lock-up 1:1 drive are correct?

• A. Technician A
• B. Technician B
• C. Both Technician A and Technician B
• D. Neither Technician A nor Technician B

Answer: (C)

Understanding how power flows between rotating parts is what this item tests. In drive-train and turbine systems, who is driving whom and when a direct, slip-free connection exists changes how the system behaves.

For the impeller and turbine relationship, note that in many configurations the turbine and impeller share a shaft, so energy from one can be transmitted to the other depending on the design. In some setups, it’s described in a way that the impeller’s action can drive a turbine, or that both components are part of a coupled path. This kind of phrasing highlights that, under specific designs, the impeller’s rotation can be the source that powers a turbine.

The lock-up 1:1 drive refers to a clutch mechanism that creates a direct mechanical link between the driving and driven components, giving a one-to-one speed ratio and eliminating hydraulic slip at certain operating conditions. This direct drive improves efficiency because there’s minimal or no energy lost to fluid coupling.

So, if the test presents both statements as correct, it’s recognizing that each statement can be true within its particular context or design, and both reflect valid aspects of drive-train behavior.