Exam Question
(a) How will you align a motor-pump shaft? What are the different methods of alignment that can be used? (8)
(b) Why is the Refrigeration Compressor often belt driven? (8)
Class 4 (4th Engineer)
MEP
📅 Apr 2025
Reference Answer
### (a) Shaft Alignment: Procedure and Methods
**1. Objective of Shaft Alignment**
Proper alignment of a motor and pump shaft is critical for ensuring the reliability and longevity of the machinery. The primary objective is to make the rotational centerlines of the two shafts co-linear when the machines are running at their normal operating temperatures (hot alignment condition).
Failure to achieve proper alignment results in:
**1. Objective of Shaft Alignment**
Proper alignment of a motor and pump shaft is critical for ensuring the reliability and longevity of the machinery. The primary objective is to make the rotational centerlines of the two shafts co-linear when the machines are running at their normal operating temperatures (hot alignment condition).
Failure to achieve proper alignment results in:
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