John Energy Chief Mechanic Interview Questions and Answers

Foxboro iA series DCS is a distributed control system used in industrial automation.

• It is designed for process automation and control in industries such as oil and gas, power, and chemical.

• It offers advanced control strategies and algorithms for optimizing process performance.

• It includes a range of hardware and software components, including controllers, I/O modules, and engineering tools.

• It supports various communicat...read more

Triconex PLC is a safety instrumented system used in critical applications.

• Triconex PLC is designed for high availability and fault tolerance.

• It uses triple modular redundancy (TMR) architecture to ensure safety and reliability.

• It has a wide range of input/output modules and communication options.

• It is used in industries such as oil and gas, chemical, and power generation.

• It has features such as diagnostics, testing, a...read more

Spanning Tree Protocol (STP) is a network protocol that prevents loops in a network topology.

• STP is used to prevent broadcast storms caused by loops in a network.

• It works by selecting a root bridge and disabling redundant paths to prevent loops.

• STP is implemented in switches and bridges in a network.

• It is defined in IEEE 802.1D standard.

• STP has several variants such as Rapid STP (RSTP) and Multiple STP (MSTP).

DCS systems in different plants are interconnected through various communication protocols.

• DCS systems use communication protocols like Modbus, Profibus, and Ethernet/IP to interconnect.

• Interconnection allows for data sharing and control between different plant areas.

• DCS systems can also be connected to other systems like SCADA and MES for higher-level control and monitoring.

• Interconnection can be achieved through wire...read more

Siemens, GE Fanuc, and Allen Bradley PLCs are programmable logic controllers used in industrial automation.

• Siemens PLCs are known for their high processing speed and advanced communication capabilities.

• GE Fanuc PLCs are known for their flexibility and ability to handle complex applications.

• Allen Bradley PLCs are known for their user-friendly programming software and extensive support network.

• All three PLCs offer a rang...read more

Steps to be taken for work in a safety critical loop

• Identify the safety critical loop

• Define the safety requirements

• Design the loop with redundancy and fault tolerance

• Implement the loop with safety standards

• Test the loop thoroughly

• Maintain the loop regularly

There are two types of maintenance for induction motors: preventive and corrective.

• Preventive maintenance involves regular inspections, cleaning, lubrication, and replacement of worn parts to prevent breakdowns.

• Corrective maintenance involves repairing or replacing parts after a breakdown has occurred.

• Preventive maintenance is more cost-effective in the long run and helps to extend the life of the motor.

• Examples of pre...read more

I have completed two internships, one in a software development company and the other in a manufacturing firm.

• Interned as a software developer at XYZ Technologies for 6 months

• Worked on developing a web application using ReactJS and NodeJS

• Assisted in testing and debugging the application

• Interned as a production engineer at ABC Manufacturing for 3 months

• Assisted in the production process and quality control

• Learned about ...read more

I am a recent engineering graduate with a passion for problem-solving and innovation.

• I graduated with a degree in Mechanical Engineering from XYZ University.

• During my time at university, I completed several projects that involved designing and building prototypes.

• I am proficient in CAD software such as SolidWorks and have experience with programming languages like Python.

• I am a quick learner and enjoy working in a team...read more

I enjoy reading, playing sports, and exploring new places.

• Reading books on various topics such as science fiction, biographies, and history

• Playing basketball and badminton with friends

• Traveling to new cities and trying local cuisine

• Learning new languages and cultures through books and travel

I failed to meet a project deadline and failed to secure an internship. I overcame them by learning from my mistakes and improving my skills.

• Failed to meet a project deadline due to poor time management

• Overcame it by creating a detailed schedule and prioritizing tasks

• Failed to secure an internship due to lack of experience

• Overcame it by taking online courses and gaining relevant skills

• Learned from both failures and imp

I am sitting for placements in companies like ABC, XYZ, and PQR.

• ABC

• XYZ

• PQR

Oil and gas sector offers challenging work, global exposure, and opportunities for growth.

• Oil and gas sector is a dynamic and constantly evolving industry.

• It offers a wide range of challenging work, from exploration to production and refining.

• Working in this sector provides global exposure and opportunities to work on projects in different parts of the world.

• The sector offers opportunities for growth and career advance...read more