Question: Francis turbine is best suited for_____________________?

• 1. medium head application from 24 to 180 m
• 2. low head installation up to 30 m
• 3. high head installation above 180 m
• 4. all types of heads

Question: Impulse turbine is generally fitted______________________?

• 1. at the level of tail race
• 2. little above the tail race
• 3. slightly below the tail race
• 4. about 2.5 m above the tail race to avoid cavitation

Question: In reaction turbine, draft tube is used_____________________?

• 1. to transport water downstream without eddies
• 2. to convert the kinetic energy to flow energy by a gradual expansion of the flow cross-section
• 3. for safety of turbine
• 4. to increase flow rate

Question: A turbine pump is basically a centrifugal pump equipped additionally with_________________?

• 1. adjustable blades
• 2. backward curved blades
• 3. vaned diffusion casing
• 4. inlet guide blades

Question: The specific speed of turbine is defined as the speed of a unit___________________?

• 1. of such a size that it delivers unit dis-charge at unit head
• 2. of such a size that it delivers unit dis-charge at unit power
• 3. of such a size that it requires unit power per unit head
• 4. of such a size that it produces unit horse power with unit head

Question: Medium specific speea of turbine implies it is___________________?

• 1. propeller turbine
• 2. Francis turbine
• 3. impulse turbine
• 4. any one of the above

Question: Runaway speed of a hydraulic turbine is_________________?

• 1. full load speed
• 2. the speed at which turbine runner will be damaged
• 3. the speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open
• 4. the speed corresponding to maximum overload permissible

Question: Low specific speed of turbine implies it is__________________?

• 1. propeller turbine
• 2. Francis turbine
• 3. impulse turbine
• 4. any one of the above

Question: High specific speed of a pump implies it is_____________________?

• 1. centrifugal pump
• 2. mixed flow pump
• 3. axial flow pump
• 4. any one of the above

Question: For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred_________________?

• 1. centrifugal
• 2. axial flow
• 3. reciprocating
• 4. mixed flow