Automobile Engineering in ME
For the same maximum pressure and temperature

Otto cycle is more efficient than Diesel cycle
Diesel cycle is more efficient than Otto cycle
Both Otto cycle and Diesel cycle are equally efficient
None of the listed here

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Automobile Engineering in ME
In a ventilated disc brake

A duct directs air towards the caliper for cooling while the vehicle is moving
Disc contains many small holes for optimum cooling performance
Disc contains radial vanes between its rubbing surfaces for optimum cooling performance
Caliper is covered with cooling fins

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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
The unsprung mass in lighter
Non vertical external forces are supported by the suspension arms
The assembly is slightly more complicated in design

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