Allied & ICAR Exam Bank • ALLIED_1222 MCQ • 1 Mark

Section 5: Irrigation and Drainage Engineering

Centrifugal Pumps and Cavitation

Subtopic: Pump Specific Speed

Question Statement:

A low-head high-discharge irrigation pump (head < 5 m, discharge > 200 L/s) typically utilizes an impeller of which type?

Options:

  • (A) Axial flow (propeller) pump with high specific speed
  • (B) Radial vane closed impeller with low specific speed
  • (C) Multi-stage turbine pump
  • (D) Reciprocating positive displacement piston

Answer Key:

A

Step-by-Step Solution & Explanation

Axial flow propeller pumps operate at high specific speed ($N_s > 9000\text{ US units}$), producing massive flow volumes under low lifts ideal for canal lifting and drainage dewatering.
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