30+ Hindustan Unilever Interview Questions and Answers

SSC increases when load is reduced due to increased reactive power. Decreasing vacuum may indicate a leak or malfunction. Turbine bearing temperatures and alarms/trippings values depend on specific turbine model and operating conditions.

• SSC (Synchronous Condenser Capacity) increases when load is reduced due to increased reactive power.

• Decreasing vacuum may indicate a leak or malfunction in the system. As a DCS engineer, investigate the cause and take appropriate action.

• Turbin...read more

The process of selecting a pump involves various steps from RFQ to manufacturing clearance stage.

• 1. Receive RFQ (Request for Quotation) from client specifying requirements such as flow rate, head, material, etc.

• 2. Analyze the requirements and select a suitable pump type (centrifugal, reciprocating, etc.) based on the application.

• 3. Prepare technical specifications and send out RFQ to pump suppliers for quotation.

• 4. Evaluate quotations based on factors like cost, delivery time...read more

On average, I receive around 20 tickets per week through the support portal.

• I typically receive a mix of tickets related to system errors, user issues, and enhancement requests.

• Some examples of tickets include resolving authorization errors, troubleshooting equipment breakdowns, and implementing new functionality.

• I prioritize tickets based on urgency and impact on business operations.

Controlled extraction is a process where the extraction rate is regulated, while uncontrolled extraction is a process where the extraction rate is not regulated.

• Controlled extraction involves regulating the rate of extraction to achieve a desired outcome

• Uncontrolled extraction involves allowing the extraction to occur without any regulation or control

• Examples of controlled extraction include brewing coffee or tea, while uncontrolled extraction can occur in natural processes l...read more

I have experience handling various types of valves including ball valves, gate valves, globe valves, butterfly valves, and check valves.

• Ball valves

• Gate valves

• Globe valves

• Butterfly valves

• Check valves

Steam drum spare parts include level gauges, safety valves, blowdown valves, and pressure switches.

• Level gauges

• Safety valves

• Blowdown valves

• Pressure switches

Runner power is the amount of work done by a runner in a given time. Impulse momentum principle states that the change in momentum of an object is equal to the impulse applied to it.

• Runner power is a measure of how much work a runner can do in a specific time period.

• It is calculated by dividing the work done by the time taken.

• For example, if a runner completes a 10 km race in 1 hour, their power can be calculated by dividing the work done (10 km) by the time taken (1 hour).

• Im...read more

Blower head calculation is done by considering factors like flow rate, pressure, efficiency, and specific speed.

• Calculate the required flow rate for the application

• Determine the required pressure for the system

• Consider the efficiency of the blower

• Calculate the specific speed of the blower

• Use the formula to calculate the blower head

Super heater tubes are typically made of alloy steel to withstand high temperatures and pressures.

• Super heater tubes are commonly made of materials like T11, T22, T91, etc.

• Alloy steel is preferred for its high temperature and pressure resistance.

• The material composition may vary based on the specific requirements of the boiler system.

A boiler is a closed vessel in which water or other fluid is heated.

• Boilers are used to generate steam or hot water for heating, processing, or power generation

• They can be fueled by natural gas, oil, coal, or electricity

• Boilers have pressure and temperature controls to ensure safe operation

Use a hoist or crane to lift the motor of Kuntal.

• Ensure the hoist or crane is rated for the weight of the motor.

• Attach the hoist or crane to the lifting points on the motor.

• Slowly lift the motor and ensure it is stable before moving it.

• Have a team of people to assist with the lifting process.

• Wear appropriate safety gear, such as gloves and hard hats.

Yes, I have worked on Desalination plant design.

• I have experience in designing various components of desalination plants such as reverse osmosis systems, evaporators, and pumps.

• I have worked on optimizing the efficiency and performance of desalination plants through design improvements.

• I have collaborated with a team of engineers to ensure the successful implementation of desalination plant designs.

• I have knowledge of industry standards and regulations related to desalination...read more

Dearetor in chemical dosing % refers to the percentage of chemical dosing in the deaerator system.

• Dearetor in chemical dosing % is the amount of chemical added to the deaerator system to prevent corrosion and scale buildup.

• The percentage of chemical dosing can vary depending on the specific requirements of the system and the type of chemicals being used.

• For example, a typical range for chemical dosing in a deaerator system might be between 0.5% to 2% of the total water flow.

• M...read more

Water wall tubes are typically made of carbon steel, stainless steel, or alloy steel to withstand high temperatures and pressure.

• Water wall tubes are commonly made of carbon steel due to its cost-effectiveness and durability.

• Stainless steel water wall tubes are used in applications where corrosion resistance is important.

• Alloy steel water wall tubes are preferred for high-pressure and high-temperature environments.

• Common materials used for water wall tubes include SA-178, SA-...read more

Super heater steam speed is the velocity at which steam flows through the super heater tubes.

• Super heater steam speed is typically measured in meters per second or feet per minute.

• Higher steam speeds can increase heat transfer efficiency in the super heater.

• Proper steam speed is crucial to prevent overheating or underheating of the super heater tubes.

Total moisture in coal refers to the moisture content present in coal including both surface moisture and inherent moisture.

• Total moisture in coal is the sum of surface moisture and inherent moisture.

• Surface moisture is the moisture present on the surface of coal particles, while inherent moisture is the moisture contained within the coal itself.

• Total moisture affects the calorific value and combustion efficiency of coal.

• High total moisture content in coal can lead to increas...read more

Slop in total oxygen % refers to the amount of oxygen present in the slop being used in the boiler operation.

• Slop in total oxygen % is an important parameter to monitor in boiler operation as it affects combustion efficiency.

• High levels of oxygen in slop can indicate incomplete combustion, leading to energy loss and increased emissions.

• Regular monitoring and adjustment of oxygen levels in slop can help optimize boiler performance and reduce environmental impact.

Pump selection is done based on factors like flow rate, head, system requirements, and pump efficiency.

• Consider the required flow rate and head for the system

• Analyze the system requirements such as pressure, temperature, and fluid properties

• Select a pump type based on the application (centrifugal, positive displacement, etc.)

• Calculate the pump efficiency and operating costs

• Consider factors like NPSH, material compatibility, and maintenance requirements

• Example: For a water tre...read more

I have 5 years of experience in retail sales.

• I have worked in various retail stores, including a clothing boutique and a department store.

• During my time in retail sales, I have consistently exceeded sales targets and received positive feedback from customers.

• I am skilled in customer service, product knowledge, and upselling techniques.

• I have also trained and supervised new sales associates, helping them improve their sales skills.

• In my previous role as a Store Associate, I wa...read more

The file is typically made of steel.

• Files are typically made of high-carbon steel.

• Some files may be made of other metals, such as tungsten carbide or diamond-coated steel.

• The type of metal used for a file depends on the intended use and the desired level of durability and hardness.

Tables in SAP are database objects that store data in a structured format.

• Tables in SAP are used to store data in a structured format.

• They consist of fields and records.

• Tables can be customized or standard in SAP.

• Examples of SAP tables include MARA (Material Master), KNA1 (Customer Master), and VBAK (Sales Document Header).

Various types of reports can be made in SAP PM, such as work order reports, maintenance history reports, and equipment status reports.

• Work order reports provide details on work orders created, completed, or in progress.

• Maintenance history reports show the maintenance activities performed on equipment or assets.

• Equipment status reports display the current status of equipment, such as operational, under maintenance, or out of service.

Silica in DM water can cause scaling and corrosion in boiler systems.

• Silica in DM water can lead to scaling on boiler tubes and heat exchangers.

• High levels of silica can also cause corrosion in boiler systems.

• Regular monitoring and treatment of DM water is essential to prevent silica buildup.

• Examples of treatment methods include ion exchange resins and reverse osmosis systems.

Tube failure can occur due to various reasons such as corrosion, erosion, overheating, and mechanical stress.

• Corrosion from water or chemical reactions can weaken the tube material.

• Erosion from high velocity fluid flow can wear down the tube walls.

• Overheating can cause the tube material to weaken and eventually fail.

• Mechanical stress from pressure fluctuations or vibrations can lead to cracks and failures.

• Examples: Corrosion due to untreated water in boiler tubes, erosion fro...read more

Transformers play a crucial role in ensuring safety in electrical systems.

• Transformers help in isolating electrical circuits, preventing electric shocks.

• They provide voltage regulation, preventing overvoltage or undervoltage conditions.

• Transformers can be equipped with protective devices like fuses or circuit breakers.

• Regular maintenance and inspections are necessary to ensure transformer safety.

• Proper grounding of transformers is essential to prevent electrical hazards.

The best operation of a turbine involves proper startup procedures, efficient operation, and safe shutdown protocols.

• Ensure all safety checks are completed before starting the turbine

• Monitor and adjust turbine parameters to maintain optimal performance

• Follow manufacturer's guidelines for shutdown procedures to prevent damage

• Regular maintenance and inspections to ensure smooth operation

• Implement proper cooling and lubrication systems to prevent overheating and wear

Tool changing and writing in MC code involves physically changing the tool in the machine and updating the code accordingly.

• Physically change the tool in the machine according to the requirements of the job

• Update the MC code to reflect the new tool being used

• Ensure proper calibration and testing of the new tool before resuming operations

DG PMS stands for Diesel Generator Power Management System. Delay work refers to the delay in the functioning of the system.

• DG PMS is a system used to manage and control the power supply from diesel generators.

• Delay work in DG PMS refers to any delay or interruption in the normal functioning of the system.

• Examples of delay work in DG PMS can include issues with the generator starting, fuel supply problems, or malfunctioning of the control system.

• Delay work can lead to power o...read more

Rankine cycle is a thermodynamic cycle used in power plants to convert heat into mechanical work.

• Rankine cycle is a theoretical cycle that represents the operation of a steam power plant.

• It consists of four processes: heating, expansion, cooling, and compression.

• The cycle uses a working fluid, typically water or steam, to transfer heat and perform work.

• The heat source is usually a boiler where fuel is burned to produce high-pressure steam.

• The high-pressure steam expands in a ...read more

Engine transmission is the mechanism that transmits power from the engine to the wheels of a vehicle while it is running.

• Engine transmission transfers power from the engine to the wheels

• It consists of components like gears, shafts, and clutches

• Proper maintenance and lubrication are essential for smooth operation

Yes

• Yes, I have 14 years of experience in retail sales.

• During my tenure, I have successfully managed and supervised store operations.

• I have consistently achieved sales targets and implemented effective strategies to drive revenue growth.

• I have trained and mentored sales teams, ensuring excellent customer service and satisfaction.

• I have also handled inventory management, merchandising, and promotional activities.

• My experience includes working with diverse customer segments and ...read more

Vaccum drop in a turbine can be caused by air leakage, steam leakage, or malfunctioning equipment.

• Air leakage in the system

• Steam leakage in the system

• Malfunctioning equipment such as valves or seals

• Low condenser vacuum due to cooling water temperature increase

• High turbine exhaust pressure

The 'All Running Defcult' problem refers to a situation where all equipment or machinery is experiencing difficulties while in operation.

• Check for common issues such as lack of maintenance or improper calibration

• Inspect each equipment individually to identify specific problems

• Consult with other technicians or engineers for troubleshooting assistance

Downtime costs include lost production, repair expenses, and potential damage to reputation.

• Calculate lost production revenue during downtime

• Consider repair expenses for fixing the issue causing downtime

• Factor in potential damage to reputation and customer trust

• Implement preventive maintenance to reduce downtime costs

• Invest in spare parts inventory to minimize downtime