HORTICULTURE

Detailed explanation-1: -High-speed engines, with rated speeds of 900 to 1, 200 revolutions per minute, are used in a few cases in ships, but engines of this class are almost always found in small craft such as tugs, fishing vessels, and high-speed ferries.

Detailed explanation-2: -About 300, 000 MPH, give or take.

Detailed explanation-3: -Concept: SI Engines operates at higher speed due to their less compression ratio (i.e. less weight per unit power). They produce less torque and operates at higher speed.

Detailed explanation-4: -For most modern vehicle, you should not cruise above 2500 to 3000 rpm. Most of the turbo-charged engines develop a lot of more torque around 1800 to 2600 rpm range. Older engines, torque didn’t peak until 3500+ rpm.