Rotary engines use a _________- lobed rotor instead of reciprocating pistons.

A) one
B) two
C) three
D) four

Rotary Engines

An internal combustion engine where the combustion chamber rotates around a fixed crankshaft, known for a compact and lightweight design.

Lobe

A projection or segment of an object, typically referring to the part of a camshaft that engages with a valve lifter in an internal combustion engine to open and close valves.

Rotor

A component of disc brake systems, a flat, circular plate that the brake pads clamp onto to slow or stop the vehicle.