automatic transmissions section 1 test: CH 1, 2, 3 |81 Questions and Answers with complete solution | 2023 latest

Which of the following DOES NOT describe the purpose of a vehicle's drivetrain? - It increases the power available to the drive wheels. Power is created in the engine (and/or motor) the drivetrain is responsible for taking the power from the engine and transferring it to the wheels. Which of the following can be used to multiply torque? - pulleys, gears levers Which of the following IS NOT a true statement about gear ratios? Note: One of the book answers was eliminated as it was misleading. A high (numerical) ratio allows for greater torque multiplication. - in gear systems, speed reduction means torque decreases The engine's power is transmitted to the transmission through a fluid coupler, called the: - torque converter Most automatic transmission equipped models use torque converters but there are a few models that have incorporated a start clutch While discussing engine vacuum: Technician A says it always increases as engine load decreases. Technician B says it is highest at deceleration. Who is correct? - both Engine vacuum is used in many of the powertrain control systems to determine the load on the engine Technician A says through selection of the proper gear ratio, torque applied to the drive wheels can be optimized. Technician B says increasing the number of forward speeds decreases fuel consumption, and exhaust emissions. Who is correct? - tech A