For reaction turbines the optimum sigma value lies between _______
A. 0.8 and 1.0
B. 0.6 and 1.0
C. 0.4 and 0.8
D. none of the mentioned
Answer:A
For reaction turbines the optimum sigma value lies between _______
A. 0.8 and 1.0 B. 0.6 and 1.0 C. 0.4 and 0.8 D. none of the mentioned
Explanation: For reaction turbines sigma value lies between 0.8 and 1.0 which can be found out from graph plotted between sigma and efficiency.