For two stage impulse turbine optimum sigma value lies between ____
A. 0.3 and 0.5
B. 0.2 and 0.4
C. 0.1 and 0.5
D. none of the mentioned
Answer:A
For two stage impulse turbine optimum sigma value lies between ____
A. 0.3 and 0.5 B. 0.2 and 0.4 C. 0.1 and 0.5 D. none of the mentioned
Explanation: For two stage impulse turbine sigma value lies in between 0.2 and 0.4 which can be found out from graph plotted between sigma value and efficiency.