Hydraulic Machines Mcqs
Q.1: The hydraulic turbines are also known as : ___________?7
A. steam turbines
B. water turbines
C. combustion turbines
D. Gas turbines
Q.2: In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?\
A. rectilinear flow
B. radial flow
C. free vortex motion
D. forced vortex
Q.3: For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?
A. centrifugal
B. axial flow
C. reciprocating
D. mixed flow
Q.4: High specific speed of a pump implies it is_____________________?A
A. centrifugal pump
B. mixed flow pump
C. axial flow pump
D. any one of the above
Q.5: Low specific speed of turbine implies it is__________________?>
A. propeller turbine
B. Francis turbine
C. impulse turbine
D. any one of the above
Q.6: Runaway speed of a hydraulic turbine is_________________?9
A. full load speed
B. the speed at which turbine runner will be damaged1
C. the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide openm
D. the speed corresponding to maximum overload permissible7
Q.7: Medium specific speea of turbine implies it is___________________?B
A. propeller turbine
B. Francis turbine
C. impulse turbine
D. any one of the above
Q.8: The specific speed of turbine is defined as the speed of a unit___________________?S
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 head8
D. of such a size that it produces unit horse power with unit head?
Q.9: A turbine pump is basically a centrifugal pump equipped additionally with_________________?[
A. adjustable blades
B. backward curved blades
C. vaned diffusion casing
D. inlet guide blades
Q.10: In reaction turbine, draft tube is used_____________________?=
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

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