The torque converter places enormous load and shear forces on the transmission fluid that create tremendous amounts of __________.

The torque converter places enormous load and shear forces on the transmission fluid that create tremendous amounts of __________.

• A. Torque
• B. Heat
• C. Friction
• D. Pressure

Answer: (B)

When a torque converter works, power is transferred through circulating transmission fluid. The impeller and turbine rotate at different speeds, causing layers of fluid to slide past each other, which is shear. The energy not used to drive the turbine is dissipated as heat in the fluid. Under heavy load, more energy is lost this way, so the fluid heats up quickly. That heat is what stresses the transmission fluid and why cooling is essential. So the right fill is heat. Friction is the mechanism that creates that heat, but the statement is about the resulting effect, not the process itself. Pressure and torque are not the primary outcome described here.

When a torque converter works, power is transferred through circulating transmission fluid. The impeller and turbine rotate at different speeds, causing layers of fluid to slide past each other, which is shear. The energy not used to drive the turbine is dissipated as heat in the fluid. Under heavy load, more energy is lost this way, so the fluid heats up quickly. That heat is what stresses the transmission fluid and why cooling is essential. So the right fill is heat. Friction is the mechanism that creates that heat, but the statement is about the resulting effect, not the process itself. Pressure and torque are not the primary outcome described here.