Mechanical Engineering

Hello dear
Aerospace engineers and mechanical engineers both work on the development and construction of equipment and devices. However, the field of aerospace engineering is more narrow than mechanical engineering, focusing on airplanes and other aerospace-related machines. Mechanical engineering is a particularly broad field, encompassing work done in a wide variety of industries and serving a multitude of purposes.
Hope this helps you.
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Best of luck

Dear Virat,
You can get a job in NZ if you are present there onshore, otherwise, an employer will not take the trouble of getting you a visa unless you are that qualified and experienced that they need you. The other way is you go there as a student and after completing your course you will get a post-study work visa which will allow you to look for a job and work there.

Hello !Mechanical engineering is the discipline that applies the principles of engineering, physics, and materials science for the design, analysis, manufacturing, and maintenance of mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery.
Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics, and electromagnetism.

I will Suggest You To Do MBA as Of My Experience .
Thanks.