Engineering · Diesel — Turbocharging
A turbocharger differs from a mechanically driven supercharger in that it is driven by:
- AEnergy in the engine's exhaust gas✓ Correct
- BThe crankshaft through gears
- CAn electric motor only
- DThe camshaft directly
Explanation
A turbocharger uses an exhaust-gas-driven turbine coupled to a compressor wheel, recovering otherwise wasted exhaust energy. A supercharger is mechanically driven by the engine and therefore consumes engine power.
Authority: Modern Marine Engineer's Manual; forced induction principles
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