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10+ C Road Solutions Interview Questions and Answers

Updated 24 Jul 2024

Q1. How to select top 10 records (using SQL) from a table?

Ans.

How to select top 10 records (using SQL) from a table?

  • Use SELECT statement with ORDER BY clause

  • Add DESC keyword to sort in descending order

  • Use LIMIT or FETCH FIRST clause to limit the number of records

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Q2. Can we have multiple inheritance in Java? How?

Ans.

Yes, Java supports multiple inheritance through interfaces.

  • Java does not support multiple inheritance through classes

  • Interfaces can be used to achieve multiple inheritance

  • A class can implement multiple interfaces

  • Example: class A implements Interface1, Interface2

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Q3. Have you worked with any Database.

Ans.

Yes, I have worked with databases.

  • I have experience working with SQL and NoSQL databases.

  • I have worked with MySQL, MongoDB, and Oracle databases.

  • I have experience in creating and managing databases, writing queries, and optimizing performance.

  • I have also worked with data migration and integration between different databases.

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Q4. 5.Aren't you interested in IT sector?There's more money and comfort in it.

Ans.

I am interested in the manufacturing sector because of its unique challenges and opportunities for growth.

  • I have always been fascinated by the process of creating physical products and seeing them come to life.

  • I enjoy working with my hands and being involved in the production process.

  • Manufacturing offers a wide range of career paths, from engineering to operations management.

  • I believe that the manufacturing sector plays a crucial role in driving economic growth and innovation...read more

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Q5. 5. At the end of the 8th sem what would be your pointer?

Ans.

My expected pointer at the end of 8th sem is 8.5.

  • Consistently scoring high grades in all subjects

  • Completing assignments and projects on time

  • Seeking help from professors and peers when needed

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Q6. 1. what is inductive sensors 2.What is capacitive sensors

Ans.

Inductive sensors detect metallic objects while capacitive sensors detect any object with a dielectric constant

  • Inductive sensors generate a magnetic field that induces eddy currents in metallic objects, causing a change in the sensor's output

  • Capacitive sensors use changes in capacitance to detect the presence or absence of an object

  • Capacitive sensors can detect non-metallic objects such as liquids, plastics, and paper

  • Inductive sensors are commonly used in industrial automatio...read more

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Q7. Valve and material standards?

Ans.

Valve and material standards are crucial for ensuring proper functionality and safety in technical designs.

  • Valve standards refer to specifications for the design, materials, and performance of valves used in various industries.

  • Material standards outline the properties, composition, and quality requirements for materials used in technical designs.

  • Adhering to valve and material standards is essential for ensuring compatibility, reliability, and safety of the final product.

  • Examp...read more

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Q8. Are you able to operate machine independently

Ans.

Yes, I am able to operate machines independently with experience in troubleshooting and maintenance.

  • I have experience operating various machines independently

  • I am skilled in troubleshooting and maintenance of machines

  • I can follow technical manuals and instructions accurately

  • I am familiar with safety protocols and procedures for operating machines

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Q9. Which type of product we made

Ans.

We make a variety of products in different categories.

  • We make electronic gadgets such as smartphones and laptops.

  • We also make home appliances like refrigerators and washing machines.

  • In addition, we manufacture personal care products like shavers and hair dryers.

  • We have a range of products in the healthcare sector such as blood pressure monitors and thermometers.

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Q10. Different between HMI and SCADA

Ans.

HMI stands for Human Machine Interface and is used for operator control of machines, while SCADA stands for Supervisory Control and Data Acquisition and is used for monitoring and controlling processes.

  • HMI is used for operator control of machines, while SCADA is used for monitoring and controlling processes

  • HMI typically has a graphical interface for operators to interact with, while SCADA focuses on data acquisition and control

  • HMI is more focused on local control and feedback...read more

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Q11. What is PLC and HMI

Ans.

PLC stands for Programmable Logic Controller, used to automate industrial processes. HMI stands for Human Machine Interface, used for interaction with machines.

  • PLC is a digital computer used for automation of electromechanical processes.

  • HMI is a user interface that connects an operator to the controller of a machine.

  • PLC and HMI work together to control and monitor industrial processes.

  • PLC programming involves writing logic for controlling machinery.

  • HMI provides a visual repre...read more

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Q12. What is ETL ?

Ans.

ETL stands for Extract, Transform, Load. It is a process used to extract data from various sources, transform it into a consistent format, and load it into a target database.

  • Extract: Data is extracted from different sources such as databases, files, APIs, etc.

  • Transform: Data is cleaned, validated, and transformed into a consistent format suitable for analysis.

  • Load: The transformed data is loaded into a target database or data warehouse for further analysis.

  • ETL tools like Info...read more

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