Answer:
See explaination
Explanation:
See attachment for the detailed step by step solution of the given problem.
Answer:
a)27.9%
b)
Explanation:
Given that
Fuel energy content = 73.1 MJ/kg
Useful power = 17.4 KW
Heat rejection rate = 44.8 KW
From first law of thermodynamics
Heat addition rate =Heat rejection rate + Power out put
Now by putting the values in the above formula
Heat addition rate = 44.8 + 17.4
Heat addition rate =62.2 KW
We know that efficiency is given as follows

So


So the efficiency is 27.9%.
Now to find usage rate of fuel
Lets take usage rate is 
Fuel energy content x usage rate of fuel = Heat addition rate
Now by putting the values


Answer: Focusing on the road
Explanation:
I know it and pls mark me as brainiest