Question

Write the sequence of flow of water through the Water turbine pump.
A. Turbine intake
B. Turbine runner
C. Pump intake
D. Draft tube
Choose the correct answer from the options given below:

• A. A, B, C, D
• B. A, C, B, D
• C. B, A, D, C
• D. C, B, A, D

Hint:

Recognize the difference between turbines and pumps. Turbines extract energy from flow (Intake \(\rightarrow\) Runner \(\rightarrow\) Outlet/Draft Tube). Pumps add energy to a fluid (Intake \(\rightarrow\) Impeller \(\rightarrow\) Outlet/Volute).

Answer 1

The Correct Option is C

Step 1: Analyze the components.
- A. Turbine intake: Where water enters the turbine system (e.g., from a penstock).
- B. Turbine runner: The rotating part with blades that is turned by the flowing water.
- D. Draft tube: A diverging tube at the exit of a reaction turbine that slows the water down, recovering kinetic energy and increasing the effective head.
- C. Pump intake: Where water enters a pump.
Step 2: Determine the flow path.
For a reaction water turbine, the sequence is: Intake \(\rightarrow\) Runner \(\rightarrow\) Draft Tube. So, A \(\rightarrow\) B \(\rightarrow\) D.
The term "Pump intake" (C) does not belong in the sequence of a water turbine. The question is fundamentally flawed by mixing components of two different machines (a turbine, which generates power from flow, and a pump, which uses power to create flow). It is impossible to form a correct sequence using all four items.