20+ ExxonMobil Interview Questions and Answers

The direction of fluid flow in a vertical pipe depends on the pressure difference between two vertical locations.

• Fluid flows from high pressure to low pressure.

• If the pressure at the lower location is higher than the pressure at the upper location, the fluid will flow downwards.

• If the pressure at the upper location is higher than the pressure at the lower location, the fluid will flow upwards.

• The magnitude of the pressure difference determines the rate of fluid flow.

To find if a point is inside or outside of a regular polygon, we can use the Ray Casting algorithm.

• Draw a line from the point to a point outside the polygon

• Count the number of times the line intersects with the polygon edges

• If the number of intersections is odd, the point is inside the polygon

• If the number of intersections is even, the point is outside the polygon

I handle negative outcomes by analyzing the root cause and identifying potential solutions.

• I remain calm and objective to avoid making hasty decisions.

• I review the data and identify the root cause of the negative outcome.

• I brainstorm potential solutions and evaluate their feasibility.

• I implement the best solution and monitor its effectiveness.

• I use the experience as a learning opportunity to improve future outcomes.

Shaft alignment in hydel power projects is carried out using laser alignment tools and techniques.

• Laser alignment tools are used to measure and correct shaft misalignment.

• The process involves measuring the offset and angular misalignment of the shafts.

• The readings are then used to adjust the position of the shafts until they are aligned within the required tolerances.

• Alignment is critical for efficient and safe operation of the hydel power project.

• Examples of laser alignment ...read more

There are various types of compressors used in power plants such as centrifugal, reciprocating, screw, and axial flow compressors.

• Centrifugal compressors are commonly used in power plants for air compression.

• Reciprocating compressors are used for high-pressure applications.

• Screw compressors are used for low-pressure applications.

• Axial flow compressors are used for large volumes of air at low pressure.

• Other types of compressors used in power plants include diaphragm compressor...read more

A flip flop is a digital circuit that can store one bit of information. A piezoelectric sensor is a device that converts mechanical energy into electrical energy.

• A flip flop is a type of sequential logic circuit that can store and remember a single bit of information.

• It has two stable states, namely SET and RESET, which can be changed based on the input signals.

• Flip flops are widely used in digital electronics for memory storage, data synchronization, and clocking signals.

• Exa...read more

Productivity of equipment can be measured by factors like utilization rate, downtime, and efficiency.

• Productivity of equipment can be measured by factors such as utilization rate, downtime, and efficiency.

• Utilization rate is calculated by dividing actual working hours by total available hours.

• Downtime refers to the time when equipment is not operational, impacting productivity.

• Efficiency is determined by comparing actual output to expected output.

• Examples of equipment product...read more

No, if an object is defined with 'const' keyword, it cannot be modified in the future.

• Objects defined with 'const' keyword are read-only and cannot be reassigned.

• Properties of a 'const' object can still be modified, but the object itself cannot be reassigned.

• Example: const obj = { key: 'value' }; obj.key = 'new value'; // Valid, but obj = { newKey: 'newValue' }; // Invalid

Different types of level instruments can be used in different applications depending on the requirements.

• For continuous level measurement, ultrasonic level sensors can be used.

• For point level detection, capacitance level switches can be used.

• For high-temperature applications, guided wave radar level sensors can be used.

• For corrosive or aggressive liquids, magnetic level gauges can be used.

• For level measurement in open tanks, radar level sensors can be used.

ExxonMobil is involved in oil and gas exploration, production, and marketing in India.

• ExxonMobil has a 25% stake in a liquefied natural gas (LNG) terminal in Gujarat.

• The company is also involved in a joint venture with Indian Oil Corporation to manufacture and market lubricants.

• ExxonMobil is exploring opportunities for shale gas development in India.

• The company has a research and development center in Bangalore.

• ExxonMobil is committed to reducing greenhouse gas emissions in I...read more

I have handled various equipments including computers, servers, routers, switches, and printers.

• Computers

• Servers

• Routers

• Switches

• Printers

Plumbers should follow safety measures such as wearing protective gear, securing work areas, and using proper tools.

• Always wear appropriate protective gear such as gloves, goggles, and hard hats.

• Secure work areas by blocking off access to prevent accidents.

• Use proper tools and equipment to avoid injuries and ensure work is done correctly.

• Follow safety protocols for handling hazardous materials and chemicals.

• Regularly inspect and maintain tools and equipment to prevent malfunc...read more

The overall refinery setup typically includes crude oil distillation units, catalytic cracking units, hydrotreating units, and various other processing units.

• Crude oil distillation units separate crude oil into different fractions based on boiling points

• Catalytic cracking units break down heavy hydrocarbons into lighter products like gasoline and diesel

• Hydrotreating units remove impurities like sulfur from products to meet environmental regulations

• Other processing units may i...read more

Hadoop data architect is responsible for designing and implementing the data architecture for Hadoop-based solutions.

• Designing and implementing data architecture for Hadoop-based solutions

• Ensuring data is stored efficiently and securely

• Optimizing data processing and retrieval

• Working with other teams to ensure data integration and compatibility

• Examples: designing a data lake architecture for a large retail company, implementing a real-time data processing pipeline for a financ...read more

Porosity is the measure of empty space in a rock while permeability is the ability of fluids to flow through the rock.

• Porosity refers to the percentage of void space in a rock or sediment, which can hold fluids like oil or water.

• Permeability is a measure of how easily fluids can flow through the interconnected pore spaces in a rock.

• Generally, rocks with high porosity tend to have high permeability, allowing fluids to flow more easily.

• However, there can be exceptions where roc...read more

Decorators in Python are functions that modify the behavior of other functions or methods.

• Decorators are denoted by the @ symbol followed by the decorator function name.

• They are commonly used for logging, authentication, and memoization.

• Example: @staticmethod, @classmethod, @property

I am currently handling 10 distributors.

• I am responsible for managing the sales activities of 10 distributors.

• I ensure that the distributors are meeting their sales targets and are properly trained.

• I maintain a good relationship with the distributors to ensure smooth business operations.

• I regularly monitor the performance of the distributors and provide feedback to improve their sales.

• Examples of the distributors I handle are ABC Distributors, XYZ Distributors, and LMN Distri...read more

Challenges in well testing include equipment malfunctions, environmental factors, and data interpretation.

• Equipment malfunctions can lead to inaccurate results.

• Environmental factors such as weather conditions or nearby activities can affect testing.

• Data interpretation can be complex and require specialized knowledge.

• Pressure build-up in the well can also pose challenges during testing.

Fluid is a substance that flows and takes the shape of its container.

• Fluid is a state of matter that has no fixed shape and yields easily to external pressure.

• Examples of fluids include water, air, and oil.

• Fluids can be classified as liquids or gases based on their properties.