Question 182General Subjects - 1st Asst/Chief
70% to passWhen ordering a new centrifugal pump for installation, what is the advantage of a pump with a double suction impeller over a single suction impeller?
APump capacity will be doubled.
BThe pump can be used with a reversible drive.
CThe pump will experience less axial thrust.
DThe pump will experience less water turbulence.
AI Explanation
The correct answer is C) The pump will experience less axial thrust. The key advantage of a centrifugal pump with a double suction impeller is that it experiences less axial thrust compared to a single suction impeller. This is because the forces acting on the two sides of the impeller are balanced, reducing the net axial force acting on the pump shaft and bearings. The other answer choices are incorrect: A) Pump capacity is not doubled, it depends on the design and size of the impeller. B) A double suction impeller does not inherently allow for a reversible drive. D) Double suction impellers can actually reduce water turbulence compared to single suction designs.
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