Air filter

Battery

Exhaust silencer

Fuel injector

1-3-5-2-4-6

1-5-3-6-2-4

1-4-2-6-3-5

1-6-3-5-2-4

Pascal's law

Buoyancy principle

Venture principle

Pitot tube principle

Pig iron

White cast iron

Wrought iron

Ductile cast iron

Input supply

Primary turns of the transformers

Secondary turns of the transformers

All of these