Nalco Cheif Financial Officer Interview Questions and Answers

A transformer diagram can be drawn from both primary and secondary ends.

• Draw two parallel lines representing the core of the transformer

• Draw two coils around the core, one for primary and one for secondary

• Connect the coils with a dotted line to represent the magnetic field

• Label the primary and secondary coils and indicate the direction of current flow

• Include any additional components such as taps or shields

Crona is not a known term in the context of substations. Please provide more information.

• Crona is not a known term in the context of substations

• It is important to use correct terminology when discussing technical topics

• Preventing issues in substations involves proper maintenance and monitoring

• Examples of issues that can occur in substations include equipment failure and power outages

The efficiency of a power plant is the ratio of output power to input power.

• Efficiency is affected by factors such as fuel type, technology used, and maintenance.

• Higher efficiency means less fuel is needed to produce the same amount of power.

• Efficiency can be improved through upgrades and modifications to the plant.

• Efficiency can be calculated using the formula: Efficiency = (Output Power / Input Power) x 100%

• For examp...read more

Efficiency of transformer is the ratio of output power to input power.

• Efficiency is an important parameter for transformers.

• It is calculated as the ratio of output power to input power.

• Efficiency is always less than 100% due to losses in the transformer.

• Transformers with higher efficiency are preferred as they waste less energy.

• Efficiency can be improved by using better materials and design.

• For example, a transformer w...read more

Different types of transmission wires are used in transmission made of different metals for their specific properties.

• Copper wires are commonly used for their high conductivity.

• Aluminum wires are used for long-distance transmission due to their lightweight.

• Steel-cored aluminum wires are used for their strength and conductivity.

• Aerial bundled cables are used for their insulation properties.

• Different metals are used base...read more

The height of a tower carrying 132kv depends on various factors such as terrain, weather, and distance between towers.

• The height of the tower is determined by the voltage it carries and the distance between towers.

• The terrain and weather conditions also play a role in determining the height of the tower.

• The height of the tower can range from 15 meters to over 50 meters depending on the above factors.

• For example, in hil...read more

CT and PT can be differentiated visually in substation by their size, shape, and labeling.

• CTs are typically larger and cylindrical in shape, while PTs are smaller and more rectangular.

• CTs are often labeled with a ratio, such as 100:5, while PTs are labeled with a voltage rating.

• CTs are usually located on the high voltage side of the substation, while PTs are on the low voltage side.

• CTs are used to measure current, whil

Single phase induction motor works on the principle of electromagnetic induction.

• It has a stator and a rotor.

• The stator has a single phase winding which produces a magnetic field.

• The rotor is either squirrel cage or wound type.

• When AC supply is given to the stator winding, it produces a magnetic field which induces a current in the rotor.

• This current produces a magnetic field in the rotor which interacts with the stato...read more

Yes, I organized a technical fest in college as the head coordinator.

• Planned and executed the entire event with a team of 20 members

• Managed a budget of INR 5 lakhs and ensured timely payments to vendors

• Coordinated with sponsors and invited industry experts as guest speakers

• Handled logistics, marketing, and publicity of the event

• Received positive feedback from participants and faculty members

ISTE is a national professional society for educators and students in engineering and technology fields.

• ISTE stands for Indian Society for Technical Education

• It is a non-profit organization that aims to improve technical education in India

• As the chairman of Durgapur Chapter, I organized various workshops and seminars for students and faculty members

• I also encouraged students to participate in technical competitions and...read more

I would approach the workman and explain the importance of safety rules and PPE, and offer assistance if needed.

• Approach the workman in a calm and respectful manner

• Explain the safety rules and the importance of following them

• Demonstrate the proper use of PPE and offer assistance if needed

• Provide incentives for compliance, such as rewards or recognition

• Document any incidents or non-compliance for future reference

No, I am open to working in remote locations in India.

• I am willing to explore new places and cultures.

• I understand that remote locations may offer unique challenges, but I am up for the task.

• I am excited about the opportunity to contribute to the company's growth and success, regardless of the location.

• I am adaptable and can adjust to new environments quickly.

• I believe that working in a remote location will provide me ...read more

Blast furnace is a large steel structure used to extract iron from its ore through a chemical process.

• Raw materials like iron ore, coke, and limestone are fed into the furnace from the top.

• Hot air is blown into the furnace from the bottom, which reacts with the coke to produce carbon monoxide.

• Carbon monoxide reduces the iron ore to iron, which melts and collects at the bottom of the furnace.

• The impurities in the iron o...read more

Ductility and malleability are properties of materials to deform under stress without breaking.

• Ductility is the ability of a material to be drawn into a wire without breaking.

• Malleability is the ability of a material to be hammered or rolled into thin sheets without breaking.

• Both properties are important in metalworking and manufacturing.

• Examples of ductile materials include copper and gold.

• Examples of malleable materi

The iron content in pig iron varies from 90-94% depending on the manufacturing process.

• Pig iron is the product of smelting iron ore with a high-carbon fuel such as coke.

• The iron content in pig iron is higher than in wrought iron or cast iron.

• The iron content in pig iron can vary depending on the manufacturing process and the quality of the iron ore used.

• The iron content in pig iron is typically between 90-94%.

Pig iron is a raw material used in the production of steel and iron products.

• Pig iron is produced by smelting iron ore in a blast furnace.

• It contains high amounts of carbon, silicon, and other impurities.

• Pig iron is used as a raw material in the production of steel and iron products.

• It is also used in the manufacturing of cast iron products such as pipes, stoves, and engine blocks.

Coke is obtained from coal by heating it in the absence of air.

• Coke is a fuel with high carbon content and low impurities.

• It is used in the production of iron and steel.

• Coke is also used in the manufacture of electrodes, carbon brushes, and other carbon products.

• The process of obtaining coke is called coking.

• Coking coal is the type of coal used for coking.

• Coke is produced by heating coking coal in the absence of air at...read more

The common utensil grade Aluminium is 3003 Aluminium.

• 3003 Aluminium is a non-heat treatable alloy

• It has excellent workability and is highly resistant to corrosion

• It is commonly used in kitchen utensils, food and chemical handling equipment, and storage tanks

Yes, thermal coke can be used in BF as a fuel and reducing agent.

• Thermal coke is a byproduct of coal tar and is used as a fuel and reducing agent in blast furnaces.

• It has a high carbon content and low ash content, making it an ideal choice for BF.

• Thermal coke is cheaper than metallurgical coke and can be used as a substitute in some cases.

• However, its use is limited due to its high sulfur content, which can lead to env...read more

I am a recent graduate with a degree in engineering, eager to learn and grow in a professional environment.

• Recent graduate with a degree in engineering

• Passionate about learning and growing in a professional environment

• Strong communication and problem-solving skills

• Previous internships or projects related to engineering field

Block diagram of a steam power plant

• The steam power plant consists of a boiler, turbine, condenser, and a pump

• Fuel is burned in the boiler to produce steam

• The steam drives the turbine which generates electricity

• The steam is then condensed back into water in the condenser

• The water is pumped back to the boiler to repeat the cycle

An economizer is a device used to reduce energy consumption by recovering heat from a system or process.

• An economizer is commonly used in HVAC systems to preheat the air before it enters the furnace or boiler.

• It can also be used in power plants to recover heat from the flue gas and preheat the feedwater.

• By utilizing the waste heat, an economizer helps to improve the overall efficiency of a system.

• Economizers can be of ...read more

To design a conveyor belt, follow these steps

• Determine the required specifications such as length, width, and load capacity

• Select the appropriate materials for the belt and frame

• Design the belt path and determine the necessary components such as rollers and motors

• Create a detailed drawing and 3D model of the conveyor

• Test the conveyor to ensure it meets the required specifications

Surface hardening can be achieved through various methods.

• Case hardening - adding a hard layer to the surface of a metal by infusing carbon or nitrogen

• Flame hardening - heating the surface of a metal with a flame and then quenching it in water or oil

• Induction hardening - using electromagnetic induction to heat the surface of a metal and then quenching it

• Nitriding - introducing nitrogen into the surface of a metal to cr...read more

To harden a pencil, heat it in an oven or flame and then cool it quickly.

• Heat the pencil in an oven or flame to a temperature of around 200-250 degrees Celsius

• Cool the pencil quickly by dipping it in cold water or oil

• Repeat the process multiple times to achieve desired hardness

• Alternatively, mix the graphite with a hardening agent before molding the pencil

• Examples of hardening agents include clay, wax, and resin

Vedanta offers a diverse range of opportunities for growth and development in the engineering field.

• Vedanta is a renowned company in the engineering industry.

• It provides a platform to work on challenging projects and gain valuable experience.

• Vedanta offers a supportive and collaborative work environment.

• The company invests in the training and development of its employees.

• Vedanta has a strong focus on sustainability and...read more

I am looking for a role that allows me to apply my engineering skills and learn and grow in a supportive and challenging environment.

• I am seeking a role that offers opportunities for professional development and growth.

• I am interested in a position that allows me to utilize my technical skills and contribute to the success of the company.

• I am looking for a role where I can work collaboratively with a team and learn fro...read more

I am currently considering pursuing a master's degree in engineering to further enhance my knowledge and skills.

• Considering pursuing a master's degree in engineering

• Want to enhance knowledge and skills

• Interested in specialized areas of engineering

• Researching potential universities and programs

• Exploring scholarship and funding opportunities

Yes

• I am flexible with location and willing to relocate if required.

• I am also open to working night shifts as needed.

• I understand the importance of adapting to different schedules and locations in order to contribute effectively to the organization.

• I have previous experience working night shifts during my internship at XYZ company.

• I am aware that certain projects or tasks may require working during non-traditional hours

I am a recent graduate with a degree in Mechanical Engineering and a passion for problem-solving and innovation.

• Graduated with a degree in Mechanical Engineering

• Passionate about problem-solving and innovation

• Completed internships at XYZ Company and ABC Company

• Led a team project on designing a new product

• Proficient in CAD software and technical drawing

A GIS based rectifier is a device that converts alternating current (AC) to direct current (DC) using geographic information system (GIS) technology.

• GIS based rectifiers are commonly used in electrical power systems to convert AC power to DC power.

• They are often used in applications such as cathodic protection systems for pipelines and other metal structures.

• GIS technology is used to monitor and control the rectifier's...read more