A. at the level of tail race
B. little above the tail race
C. slightly below the tail race
D. about 2.5 m above the tail race to avoid cavitation
E. about 2.5 m below the tail race to avoid cavitation
Hydraulic Machines
Hydraulic Machines
A. medium head application from 24 to 180 m
B. low head installation up to 30 m
C. high head installation above 180 m
D. all types of heads
E. none of the above
A. Impulse turbines
B. Reaction turbines
C. Axial flow turbines
D. Mixed flow turbines
E. Reaction-cum-impulse turbines
A. increases
B. decreases
C. remains unaffected
D. first increases and then decreases
E. first decreases and then increases
A. 0 to 4.5
B. 10 to 100
C. 80 to 200
D. 250 to 300
E. none of the above
A. inlet of draft rube
B. blade inlet
C. guide blade
D. penstock
E. draft tube exit
A. directly as fan speed
B. square of fan speed
C. cube of fan speed
D. square root of fan speed
E. none of the above
A. 39.2%
B. 49.2%
C. 68.8%
D. 84.8%
E. 91.6%.
A. directly as fan speed
B. square of fan speed
C. cube of fan speed
D. square root of fan speed
E. none of the above
A. ratio of diameters
B. square of ratio of diameters
C. inverse ratio of diameters
D. square of inverse ratio of diameters
E. fourth power of ratio of diameters
