Class 4 (4th Engineer) MEKG 📅 Apr 2025

Exam Question

If a radial piston hydraulic pump fails to deliver rated fluid volume, the cause can be _________. (16)

(a) Contaminated fluid

(b) Pitted thrust rings

(d) Obstructed suctions passage

Briefly, justify your answer.

Reference Answer

### Correct Answer
(d) Obstructed suction passage
### Justification for Full Marks (16/16)
As a Senior MEO Class 1 Examiner, a complete answer requires not only identifying the correct option but also providing a detailed analysis of the underlying principles and a comparative evaluation of all given options. The failure to deliver rated fluid volume is a direct symptom of reduced volumetric efficiency.

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