Question

How is the efficiency of a fuel determined?​

Answer 1

Answer:

calorific value.

Explanation:

The efficiency of a fuel is judged by its calorific value. Calorific value is the amount of heat produced on complete combustion of 1kg of fuel . It is expressed as KJ/ Kg ( kilojoules per kilogram) .

Answer 2

Answer:

The density of a fuel — as it relates to fuel efficiency — is a quantitative variable. The more energy in a fuel — per unit of volume, — the greater the fuel efficiency. And, the more energy there is in a fuel per gallon or liter, the better the “gas” mileage of the engine the fuel powers.