Hydraulic Machines

A. full load speed
B. the speed at which turbine runner will be damaged
C. the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
D. the speed corresponding to maximum overload permissible
E. none of the above.

A. propeller turbine
B. Francis turbine
C. impulse turbine
D. any one of the above
E. none of the above

A. of such a size that it delivers unit dis-charge at unit head
B. of such a size that it delivers unit dis-charge at unit power
C. of such a size that it requires unit power per unit head
D. of such a size that it produces unit horse power with unit head
E. none of the above

A. adjustable blades
B. backward curved blades
C. vaned diffusion casing
D. inlet guide blades
E. totally submerged operation facility

A. to transport water downstream without eddies
B. to convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
C. for safety of turbine
D. to increase flow rate
E. none of the above

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

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