Practice question

A hydro-boost-equipped school bus loses power assist when the engine stalls. The system should still provide:

Full normal power assist indefinitely
No braking at all
A limited number of reserve power-assisted stops from the hydro-boost accumulator, then manual braking
Automatic spring brake application from the hydraulic side

Answer: C — A limited number of reserve power-assisted stops from the hydro-boost accumulator, then manual braking

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