Final answer:
In a two-cylinder, four-stroke engine, there will be two power strokes for every two rotations of the crankshaft, with each cylinder contributing one power stroke.
Step-by-step explanation:
In a two-cylinder, four-stroke engine, for every two rotations of the crankshaft, there will be two power strokes. This is because each cycle of a four-stroke engine consists of four distinct strokes: the intake stroke, the compression stroke, the power stroke, and the exhaust stroke. Since it takes two revolutions of the crankshaft to complete these four strokes for any given cylinder, and there are two cylinders in this configuration, each cylinder completes one power stroke per two rotations. Therefore, in two rotations of the crankshaft, the two-cylinder engine experiences two power strokes in total - one from each cylinder.