Class 4 (4th Engineer) MEP 📅 Dec 2025

Exam Question

(a) Describe the components forming part of a Gear Pump. Explain how pumping is carried out by gear pump? (8)

(b) By suitable drawing describe what is 'back lash' and enumerate it's importance. How is 'back lash' measured (4)

Reference Answer

### (a) Components and Pumping Action of a Gear Pump (8 Marks)
A gear pump is a type of positive displacement pump that uses the meshing of gears to pump fluid by displacement. It is characterized by its simple construction, reliability, and ability to handle viscous fluids.
**1. Components of an External Gear Pump:**
* **Casing/Housing:** This is the main body of the pump, typically made of cast iron or other durable metals, which encloses all internal components. It features an inlet (suction) port and an outlet (discharge) port.

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