10+ ExxonMobil Interview Questions and Answers

Regular maintenance, inspections, and repairs can prevent equipment breakdowns.

• Develop a preventive maintenance schedule

• Train staff on proper equipment use and care

• Regularly inspect equipment for signs of wear and tear

• Address any issues promptly to prevent further damage

• Keep accurate records of maintenance and repairs

• Consider investing in newer, more reliable equipment

• Partner with reputable vendors for repairs and replacements

Data centers should have N+1 or 2N redundancy for infrastructure.

• N+1 redundancy means having one extra backup component for every critical component in the infrastructure.

• 2N redundancy means having two complete sets of infrastructure, each capable of handling the full load, with one set acting as a backup for the other.

• Redundancy ensures high availability and minimizes downtime in case of component failure.

• Examples of critical components that require redundancy include power ...read more

I manage incidents and risks of sites by implementing a comprehensive risk management plan.

• Conducting regular risk assessments to identify potential hazards

• Developing and implementing emergency response plans

• Training staff on safety procedures and protocols

• Maintaining accurate incident records and conducting thorough investigations

• Collaborating with external agencies and stakeholders

• Regularly reviewing and updating risk management plans

There are two main types of energy conversion in a DG set: mechanical energy to electrical energy and chemical energy to mechanical energy.

• Mechanical energy to electrical energy: The diesel engine in the DG set converts the mechanical energy produced by the combustion of diesel fuel into electrical energy through the alternator.

• Chemical energy to mechanical energy: The combustion of diesel fuel in the engine generates heat energy, which is then converted into mechanical energ...read more

Transformer oil is crucial for insulating and cooling transformers to ensure efficient operation and prevent breakdowns.

• Transformer oil acts as an insulating medium to prevent electrical breakdowns

• It also helps in cooling the transformer by dissipating heat generated during operation

• Regular testing and maintenance of transformer oil is essential to ensure its effectiveness

• Contaminated or degraded transformer oil can lead to equipment failure and costly repairs

• Examples of tran...read more

DG set trips when taking on load due to various reasons such as overload, short circuit, fuel issues, or mechanical failures.

• Overload on the DG set causing it to trip for safety reasons

• Short circuit in the electrical system leading to a trip

• Fuel supply issues such as low fuel level or contaminated fuel

• Mechanical failures in the DG set components

• Incorrect load balancing causing the DG set to trip

Possible reasons for a DG not cranking include dead battery, faulty starter motor, fuel supply issues, or electrical problems.

• Dead battery: Check the battery voltage and connections.

• Faulty starter motor: Test the starter motor for proper functioning.

• Fuel supply issues: Ensure there is enough fuel in the tank and check the fuel lines for blockages.

• Electrical problems: Inspect the wiring and fuses for any damage or faults.

WTP stands for Water Treatment Plant, which is responsible for treating water to make it safe for consumption.

• WTP is responsible for removing impurities and contaminants from water.

• It involves processes such as filtration, sedimentation, and disinfection.

• Examples of WTPs include municipal water treatment plants and industrial water treatment facilities.

STP stands for Sewage Treatment Plant, which is responsible for treating wastewater to remove contaminants before releasing it back into the environment.

• STP is a facility designed to treat wastewater from households, industries, and commercial buildings.

• The process involves physical, chemical, and biological methods to remove contaminants such as solids, organic matter, and pathogens.

• Common treatment methods in STP include screening, sedimentation, biological treatment (such ...read more

CAM charge is calculated by dividing the total operating expenses of a property by the total square footage of the property.

• Total operating expenses include costs such as property taxes, insurance, maintenance, and utilities.

• Divide the total operating expenses by the total square footage of the property to get the CAM charge per square foot.

• For example, if the total operating expenses are $100,000 and the total square footage is 10,000, the CAM charge per square foot would be...read more