Automobile Engineering in ME
Highest useful compression ratio (HUCR) is the highest compression ratio at which the

Fuel can be used in a test engine without knocking
Engine is most efficient
Engine gives maximum output
Engine can run

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Automobile Engineering in ME
The function of anti-lock brake system (ABS) is that is

Reduces the stopping distance
Prevents nose dives during braking and thereby postpones locking of the wheels
Maintains directional control during braking by preventing the wheels from locking
Minimizes the brake fade

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Automobile Engineering in ME
The main feature of Macpherson strut suspension is that

The vertical size of the suspension can be made more compact
Non vertical external forces are supported by the suspension arms
The unsprung mass in lighter
The assembly is slightly more complicated in design

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