A petrol engine consumes 5kg of petrol per hour. if the power of the engine is 20kw and the calorific value of petrol is 11×103kcal per kg . calculate the efficiency of the engine
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Ответ:
CGS system stands for centimeter-gram -second and it was used in earlier days wherre length was represented by centimeter , mass by grams and time by seconds.
MKS stands for meter kilogram seconds. where length was measured in meter and mass in kilograms and tiem in seconds.
The foot–pound–second system or FPS system is a system of units built on three fundamental units: the foot for length, the pound for mass and the second for time.
MKS is the most convenient system to be used
Because SI unit system is the extended version of MKS system .