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: Identify the system components.
- A. Turbine intake: Entry point for water into the turbine system (e.g., from a penstock).
- B. Turbine runner: The rotor with blades driven by water flow.
- D. Draft tube: A diffuser at the outlet of a reaction turbine designed to decelerate water, thereby recovering kinetic energy and increasing the effective head.
- C. Pump intake: Inlet for water entering a pump.
Step 2: Establish the flow path.
For a reaction water turbine, the correct sequence is: Intake \(\rightarrow\) Runner \(\rightarrow\) Draft Tube. This corresponds to A \(\rightarrow\) B \(\rightarrow\) D.
The component "Pump intake" (C) is irrelevant to the operation of a water turbine. The provided list is fundamentally flawed as it conflates components of two distinct machines: a turbine (which generates power from fluid flow) and a pump (which uses power to induce fluid flow). A coherent sequence encompassing all four items cannot be constructed.