Question

Two different engines may have different power although they can do
an equal amount of work.give reasons​

Answer 1

Answer:

On the positive side, more cylinders will mean greater total piston area, for a given displacement. So that would improve efficiency. (Same calculation that makes 4 valves per cylinder better than two.) On the negative side, you have more frictional losses with more cylinders, so that reduces efficiency.

Explanation:

Hope it helps.