B. axially, radially
C. combination of axial and radial
D. radially, radially
E. radially, axially
A. none of the above
B. to transport water downstream without eddies
C. to increase flow rate
D. for safety of turbine
A. necessity of air vessel
B. all of the above
C. lower discharge
D. lower speed of operation
A. forced vortex
C. none of the above
D. rectilinear flow
E. radial flow
A. straight
B. bent forward
C. radial
D. given aerofoil section
A. any one of the above
B. impulse turbine
C. Francis turbine
E. none of the above
B. kept 50% open
C. irrespective of any position
E. kept fully closed
A. fourth power of ratio of diameters
B. ratio of diameters
C. inverse ratio of diameters
D. square of inverse ratio of diameters
B. mixed flow
C. centrifugal
D. propeller
E. axial flow
A. steep
B. first rise and then fall
E. horizontal
A. centrifugal pump
B. any one of the above
D. mixed flow pump
A. pumping of viscous fluids
C. high discharge
D. high head and high discharge
E. high efficiency
A. flow vs swept volume
C. swept volume vs speed
D. flow vs speed
E. pressure vs speed
A. horizontal
D. nearly horizontal
A. Power a speed3
B. none of the above is wrong
C. head a speed2
E. head a diameter
A. as square root of density
B. as square of density
C. directly as the air or gas density
D. inversely as square root of density
A. draft tube exit
B. penstock
D. blade inlet
E. guide blade
A. square root of fan speed
B. directly as fan speed
E. square of fan speed
B. supply pipe is long
C. supply pipe has critical diameter
D. ram chamber is large
E. supply pipe is short
C. kept fully open
D. irrespective of any position
B. fluid density
C. impeller diameter
D. speed
E. type of casing
A. 250 to 300
D. 80 to 200
E. 0 to 4.5
A. centrifugal
B. radial
C. rectilinear
E. radial
A. special type of pump with storage device and a pressure regulator
B. two cylinders, two rams and a storage device
C. a cylinder, a piston, storage tank and control valve
E. two co-axial rams and two cylinders
A. 10-15
B. 30-40
C. 50-60
E. 80-90.
A. as square of density
B. as square root of density
C. inversely as density
E. directly as the air or gas density
B. cavitation
C. friction loss
D. starting time
E. static head
A. about 2.5 m above the tail race to avoid cavitation
B. about 2.5 m below the tail race to avoid cavitation
C. at the level of tail race
D. slightly below the tail race
B. inversely as density
C. as square root of density
E. inversely as square root of density
B. cube of fan speed
C. square of fan speed
D. none of the above
E. square root of fan speed
A. first increases and then decreases
B. remains unaffected
C. increases
D. first decreases and then increases
A. steam turbines
B. combustion turbines
D. Gas turbines
A. reciprocating
B. none of the above
D. mixed flow
A. lift and tangential force
B. drag and resultant force
D. resultant force and tangential force
E. lift and drag
B. all types of heads
C. low head installation up to 30 m
E. high head installation above 180 m
A. totally submerged operation facility
B. inlet guide blades
D. adjustable blades
E. backward curved blades
A. propeller turbine
C. any one of the above
D. Francis turbine
A. 16
B. 4
D. 8
E. 12
C. 1.5 Q
D. 0.75 Q
E. Q/0.75
B. propeller turbine
D. any one of the above
E. impulse turbine
A. net head
B. relative velocity of flow at inlet
C. absolute velocity
E. blade velocity
B. 68.80%
C. 91.6%.
D. 84.80%
E. 49.20%
B. save pump from cavitation
C. increase pump efficiency
D. smoothen flow
E. increase pump head
B. forced cylindrical vortex flow
C. rotational flow
D. radial
E. forced spiral vortex flow
A. bent backward first and then forward
C. bent forward
D. straight
E. bent forward first and then backward
A. 33000 watts
C. 102 watts
D. 550 watts
E. 75 watts
B. a cylinder and a ram
D. a cylinder, a piston, storage tank and control valve
E. two cylinders, two rams and a storage device
E. axial flow pump
A. high head
C. low head
E. high head and low discharge
A. greater than 5
B. less than 3.
C. angle of taper on draft tube is
E. greater than 8
F. greater than 15
Showing 1 to 50 of 62 mcqs