The angle of taper on draft tube is A. greater than 15° B. greater than 8° C. greater than 5° D. less than 8° E. less than 3°.___________________?

Related Mcqs:

1. 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
   E. none of the above

2. Guide angle as per the aerofoil theory of Kaplan turbine blade design is defined as the angle between_________________?

   A. lift and resultant force
   B. drag and resultant force
   C. lift and tangential force
   D. lift and drag
   E. resultant force and tangential force

3. The optimum value of vane exit angle for a centrifugal pump impeller is_________________?

   A. 10-15°
   B. 20-25°
   C. 30-40°
   D. 50-60°
   E. 80-90°.

4. Maximum impulse will be developed in hydraulic ram when ___________________?

   A. waste valve closes suddenly
   B. supply pipe is long
   C. supply pipe is short
   D. ram chamber is large
   E. supply pipe has critical diameter

5. Multistage centrifugal pumps are used to obtain___________________?

   A. high discharge
   B. high head
   C. pumping of viscous fluids
   D. high head and high discharge
   E. high efficiency

6. Reciprocating pumps are no more to be seen in industrial applications (in comparison to centrifugal pumps) because of____________________?

   A. high initial and maintenance cost
   B. lower discharge
   C. lower speed of operation
   D. necessity of air vessel
   E. all of the above

7. Indicator diagram of a reciprocating pump is a graph between________________?

   A. flow vs swept volume
   B. pressure in cylinder vs swept volume
   C. flow vs speed
   D. pressure vs speed
   E. swept volume vs speed

8. A hydraulic intensifier normally consists of __________________?

   A. two cylinders, two rams and a storage device
   B. a cylinder and a ram
   C. two co-axial rams and two cylinders
   D. a cylinder, a piston, storage tank and control valve
   E. special type of pump with storage device and a pressure regulator

9. According to fan laws, at constant pressure, the speed capacity and power vary_________________?

   A. directly as the air or gas density
   B. inversely as square root of density
   C. inversely as density
   D. as square of density
   E. as square root of density

10. Medium specific speea of turbine implies it is___________________?

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