Class 4 (4th Engineer) MEP 📅 Jun 2025

Exam Question

(a) Describe the components forming part of a Gear Pump. Explain how pumping is carried out by a 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) Gear Pump: Components and Working Principle (8 Marks)
**Components of an External Gear Pump:**
A gear pump is a simple rotary positive displacement pump. Its primary components are:
* **Casing/Housing:** This is the main body of the pump which encloses all other parts. It is precision-machined to provide minimal clearance for the gears. It contains the suction and discharge ports.

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