Reading Comprehension

Read the following passage and answer the following question.
An engineering institute took their diploma students for an industrial visit to enhance their practical knowledge. After visiting the industry, students were very enthusiastic and inquisitive of the things they saw there. They asked their teacher about the helical grove cutting on a cylinder on external side using a machine called lathe. The teacher told them that this process is called threading and explained in detail.

Read the following passage and answer the following question.
Your Engineering Graphics teacher takes your class to the lab and shows the model of "Flange pipe Joint". He explained in detail how these joints are made and its specific uses. Later, he asked questions related to this joint in the class.

Consider the following series:
SeriesA = pd.series([1, 2, 3, 4, 5], index = ['a', 'b', 'c', 'd', 'e'])
SeriesB = pd.series([10, 20, -10, -50, -100], index=['z', 'y', 'a', 'c', 'e'])

Based on the above paragraph answer the following questions:

Read the passage carefully and answer the question based on the passage :
In the current digital era we are familiar with different kinds of social media. These are the websites that enable users to participate in social networking by creating and sharing contents with others in the community. In this way users can interact with others online users of those social media apps. There are certain etiquettes which need to be followed on social media too, because whenever we surf the internet we leave a trail of the activities we perform online. When the computer and network is used as a tool to perform criminal activities or offences can be considered as cyber crime like hacking, phishing, spamming. We should be careful as excessive usage of digital devices has a negative impact on our physical as well as psychological well being.