Gujarat Engineering Research Institute Mechanical Engineer Interview Questions and Answers

General Calculations

Q1. About PCB's and Molding
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Q1. Regarding the salary and personal background.
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Q1. Question Related to Applied job position
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Q1. Question Related to End to End Campaign Management
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Q1. Tell me about your projects
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Q2. Tell me yourself
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Q1. What are SQL Joins?
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SQL Joins are used to combine rows from two or more tables based on a related column between them.
• SQL Joins are used to retrieve data from multiple tables based on a related column between them.

• Common types of SQL Joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column;
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Q2. Different functions in Python numpy
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Python numpy provides various functions for numerical operations on arrays.
• numpy.sum() - calculates the sum of array elements

• numpy.mean() - calculates the mean of array elements

• numpy.max() - returns the maximum value in an array

• numpy.min() - returns the minimum value in an array

• numpy.std() - calculates the standard deviation of array elements
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Q1. What are joins and how do you use it?
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Joins are used in databases to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables based on a related column between them

• Common types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• Example: SELECT * FROM table1 INNER JOIN table2 ON table1.column = table2.column
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Q2. Processing speed of different scriting languages?
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Processing speed of scripting languages varies based on factors like code complexity and optimization.
• Processing speed can vary based on the specific task being performed.

• Compiled languages like C++ tend to be faster than interpreted languages like Python.

• Optimizing code can improve processing speed.

• JavaScript can be faster than Python for certain tasks.

• Consider using libraries or frameworks optimized for performance.
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Q1. Basic knowledge of Digital Marketing
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Q2. Formulae in digital Marketing
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Formulae in digital marketing refer to mathematical equations used to analyze and optimize marketing strategies.
• Formulae help calculate key performance indicators (KPIs) such as ROI, CTR, and conversion rates.

• Examples of formulae include ROI = (Revenue - Cost) / Cost, CTR = (Clicks / Impressions) * 100%, and Conversion Rate = (Conversions / Clicks) * 100%.
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Q1. Self introduction
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Q2. When will you join
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I will be able to join within two weeks of receiving an offer.
• I need to give my current employer two weeks notice before leaving.

• I may need to finalize any pending projects before starting a new role.

• I am excited about the opportunity and look forward to joining the team.
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