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GATE Questions with solutions: Centrifugal Pump Video Lecture | Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

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FAQs on GATE Questions with solutions: Centrifugal Pump Video Lecture - Topper Handwritten Notes & Videos for GATE ME - Mechanical Engineering

1. What is a centrifugal pump?
Ans. A centrifugal pump is a type of pump that uses centrifugal force to transport fluids. It converts rotational kinetic energy into hydrodynamic energy, which helps in moving the fluid from one place to another.
2. How does a centrifugal pump work?
Ans. A centrifugal pump works by using an impeller to increase the velocity of the fluid. The impeller rotates, creating a centrifugal force that pushes the fluid towards the outer edges of the pump. This increase in velocity is then converted into pressure, allowing the fluid to be pumped to a higher level or through a system.
3. What are the main components of a centrifugal pump?
Ans. The main components of a centrifugal pump include the impeller, casing, and shaft. The impeller is responsible for increasing the velocity of the fluid. The casing provides a passage for the fluid to flow through. The shaft connects the impeller to the motor, allowing it to rotate.
4. How is the efficiency of a centrifugal pump calculated?
Ans. The efficiency of a centrifugal pump is calculated by dividing the actual hydraulic power output by the input power. The actual hydraulic power output is the product of the flow rate, pressure, and density of the fluid being pumped. The input power is the power consumed by the pump motor.
5. What are some common problems faced with centrifugal pumps?
Ans. Some common problems faced with centrifugal pumps include cavitation, which occurs when the pressure of the fluid drops below its vapor pressure, causing the formation of vapor bubbles. Another problem is impeller wear, which can lead to a decrease in pump performance. Leakage from the pump casing or shaft seals is also a common issue that can occur. Regular maintenance and monitoring can help prevent and address these problems.
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