Internal Combustion Engines
If the ratios of all the corresponding linear dimensions are equal, then the model and the prototype are said to have

Kinematic similarity
None of these
Geometric similarity
Dynamic similarity

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Internal Combustion Engines
Which one of the following event would reduce volumetric efficiency of a vertical compression ignition engine?

Inlet valve closing before bottom dead center
Inlet valve opening before top dead center
Exhaust valve closing after top dead center
Inlet valve closing after bottom dead center

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