The general phases of project management will be the same in different industries, since this is how the process has been developed and has proven to be effective. However, the nature of different projects will determine what tasks are involved in each phase. For example, a medical device product development project will involve the product development process. These involve the design input phase, development phase, design freeze, design verification and validation, clinical trials (if necessary), design transfer, and product launch.

The objective of project management is to comply with client’s objective. A project is a temporary endeavour to design a unique product and should meet the eligibility requirements and work for the outside world. The five phase of project management i.e. initiating, planning, executing, controlling and closing phase should be done in the specified timespan. While doing the project work, meeting all the success criteria is the foremost one for a project to shine and outfit the eligibility. 

In my opinion, the project management phase is basically the same in every industry. Because several tasks together can be considered as a project, and each project will go through these five phases. For example, in my undergraduate stage, there is a project to produce traffic light indicators. In the initiating phase, I need to confirm goals and budgets with my staff. In the planning phase, leader needs to divide the project with members. At the executing phase, members need to carry out their work according to the plan. In the controlling phase, each phase of the project needs to be verified. At last, it's the closing phase. So, in different fields, the phases of project management are basically the same.

Thank you.

I think the type of industry is not the deciding factor of how project management is structured. I believe whether it is a medical device company or any other industry, the professional hierarchy of the company is what determines the amount of effort spent on each management phase. A traditional project headed by a project leader and a team of engineers will more or less follow the project life cycle chart adapted from the PMBOK Guide. A more fluid situation such as a experienced multidisciplinary team without a leader may spend more time on the executing and controlling phase if they were able to pull most of the initializing and planning phase from previous projects. A team such as this may need a "de-facto" leader when it comes to reporting to a manager or higher-up, but this leader is more of a spokesman for the team who happens to be just as hands-on in execution as the rest of the team. This is in contrast with a more traditional leader who may not be at all hands-on in execution.

Starting a project always  have an end goal. It may or may not be achieved partially or totally, but to reach the goal it follows a path. This path may not be exactly similar for every project, but we can observe a general pattern in that. That's how the 5 stages of project management came into existence. Depending on the industry and project it always changes to fit the needs of the project. After completing all those phase, you can only achieve the final goal. 

@tulikadasp

I would like to add to your comment. I think it is always important for a beginner to start by researching and using processes that are outlined by other professionals in the industry. However, it is very important that you test all the process out and see which one fits the best with your project. Usually, the processes outlined are used by large company's or firms that have been well established which may not work out with smaller groups or companies. Therefore, it is important to have the flexibility and also to take notes on what methods work out and which one doesn't, For my case, I have tried using the process used by larger companies, later on, realized that we do not have the resources to actually follow them. People who have worked for smaller companies or a lot smaller project size do you guys have any good processes that worked? 

I believe that although there are 5 stages used in project management, these stages differ in every sector, in every institution, in line with their purposes. Currently, thousands of companies in the industrial world and these companies have different goals and projects. Therefore, although there are 5 project management stages, implementing them is different for each company. It cannot be said that the goals and the details used in the project of a company with a small budget and small goals and a global company are the same.