To solve this question, we need to identify the principles of Scientific Management as proposed by Frederick Winslow Taylor. Taylor's Scientific Management, often referred to as Taylorism, focuses on improving economic efficiency and labor productivity through systematized work processes. Let's review each option provided in the question:

1. (a) Scientific selection of workman: This is a principle of Scientific Management, where the focus is on selecting the right person for the right job through systematic selection procedures.
2. (b) Standardisation of tools and equipments: This aligns with Taylor's principle, where standardization is crucial for maintaining uniformity, improving efficiency, and reducing costs.
3. (c) Cooperation between managers and workers: Taylor advocated for close cooperation between management and workers to ensure that the work was carried out as planned. This principle is essential to maintain harmony and improve productivity.
4. (d) Different piece rate plan: Although Taylor did develop a piece-rate system to incentivize productivity, it is not considered a core principle of Scientific Management itself.
5. (e) Development of a Science of work: This is a foundational principle of Taylorism. It involves creating a systematic study of work processes to increase efficiency.

Based on the above analysis, the principles of Scientific Management include (a), (b), (c), and (e). Therefore, the correct answer code is:

Correct Answer: (c), (b), (e) and (a)

In contrast, option (d) relates to compensation and is more of an incentive mechanism rather than a direct principle of Scientific Management.