After a four stroke engine has completed one full operating cycle how many degrees crankshaft rotated?

In a four-stroke engine, the crankshaft rotates a total of 720 degrees to complete one full operating cycle. This is because each of the four strokes (intake, compression, power, and exhaust) requires a 180-degree rotation of the crankshaft.

* Intake stroke: The crankshaft rotates 180 degrees as the piston moves down the cylinder, drawing air-fuel mixture into the combustion chamber.

* Compression stroke: The crankshaft rotates 180 degrees as the piston moves up the cylinder, compressing the air-fuel mixture.

* Power stroke: The crankshaft rotates 180 degrees as the burning air-fuel mixture forces the piston down the cylinder, generating power.

* Exhaust stroke: The crankshaft rotates 180 degrees as the piston moves up the cylinder, pushing the exhaust gases out of the combustion chamber.

Therefore, a total of 180 degrees X 4 strokes = 720 degrees of crankshaft rotation is required to complete one full operating cycle in a four-stroke engine.