Question 3Motor Plants - QMED

The correct answer is A) Exhaust gas turbocharger. An exhaust gas turbocharger's volumetric capacity is not proportional to engine speed. Instead, the turbocharger's compressor is driven by the engine's exhaust gases, which means its output is determined by the engine's exhaust flow, not directly by engine speed. In contrast, the other listed supercharger types (Roots blower, piston type blower, and vane type blower) have volumetric capacities that are directly proportional to the engine's rotational speed.