Category: Hydraulic Machines

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. rotational flow
B. radial
C. forced spiral vortex flow
D. forced cylindrical vortex flow
E. spiral vortex flow

A. smoothen flow
B. reduce acceleration to minimum
C. increase pump efficiency
D. save pump from cavitation
E. increase pump head

A. increases with increase in pressure
B. decreases with increase in pressure
C. more or less remains constant with in-crease in pressure
D. unpredictable
E. none of the above

A. centrifugal
B. axial flow
C. mixed flow
D. propeller
E. reciprocating

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

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

A. 4
B. 6
C. 8
D. 12
E. 16.

A. low head
B. high head
C. high head and low discharge
D. high head and high discharge
E. low head and high discharge