I think D. By pressing gradually
Answer:
a) 69,630KW
b) 203 KW
Explanation:
The data obtained from Tables A-4, A-5 and A-6 is as follows:


The power produced and consumed by turbine and pump respectively are:

Answer:
a) The maximum possible heat removal rate = 2.20w
b) Fin length = 37.4 mm
c) Fin effectiveness = 89.6
d) Percentage increase = 435%
Explanation:
See the attached file for the explanation.