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In high-speed fuel injectors, which risk escalates when fuel temperature falls below a threshold?

A)Viscosity increases, impeding atomization
B)Fluid pressure increases uncontrollably
C)Fuel density decreases dramatically
D)Combustion efficiency reaches optimum value

💡 Explanation

Lower temperatures elevate fuel viscosity; therefore, turbulence decreases as Reynolds number drops—a mechanism of laminarization—because inertial forces diminish rather than the fluid mixing effectively under cavitation conditions at higher thresholds of energy.

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