30+ Sagility Interview Questions and Answers

Different types of circuit breakers and their applications

• Thermal circuit breakers: used for protecting against overcurrents in household appliances

• Magnetic circuit breakers: used for protecting against short circuits and overloads in industrial applications

• Ground fault circuit interrupters (GFCIs): used for protecting against electric shocks in wet locations like bathrooms and kitchens

• Arc fault circuit interrupters (AFCIs): used for protecting against electrical fires caused...read more

The different components of a power system include generators, transformers, transmission lines, distribution lines, and loads.

• Generators convert mechanical energy into electrical energy.

• Transformers are used to step up or step down voltage levels.

• Transmission lines carry high voltage electricity over long distances.

• Distribution lines deliver electricity to consumers.

• Loads are the devices that consume electrical energy, such as appliances and lights.

There are three modes of heat transfer: conduction, convection, and radiation.

• Conduction is the transfer of heat through a material without any movement of the material itself.

• Convection is the transfer of heat through a fluid (liquid or gas) due to the movement of the fluid.

• Radiation is the transfer of heat through electromagnetic waves.

• Performance curve of a pump shows the relationship between the flow rate and head (pressure) generated by the pump.

• Priming is the process of...read more

PID controller is a feedback control algorithm used in systems to maintain a desired setpoint by continuously adjusting the control output.

• PID stands for Proportional-Integral-Derivative.

• It is widely used in industries for controlling various processes.

• Proportional term adjusts the control output based on the error between setpoint and actual value.

• Integral term eliminates steady-state errors by integrating the error over time.

• Derivative term predicts future errors based on t...read more

The latest trends in electrical include renewable energy, smart grids, and electric vehicles.

• Renewable energy sources such as solar and wind power are becoming more popular and affordable.

• Smart grids are being implemented to improve energy efficiency and reliability.

• Electric vehicles are gaining traction as a sustainable transportation option.

• Energy storage technologies like batteries are advancing to support renewable energy integration.

• Internet of Things (IoT) is being used...read more

I chose BPCL because of its strong reputation, diverse career opportunities, and commitment to sustainability.

• BPCL has a strong reputation in the industry for its high-quality products and services.

• The company offers diverse career opportunities across various functions and locations.

• BPCL is committed to sustainability and has implemented several initiatives to reduce its environmental impact.

• The company provides excellent training and development programs for management trai...read more

Green technology refers to environmentally friendly technologies that aim to conserve the natural environment and resources.

• Green technology focuses on reducing the environmental impact of human activities.

• It includes renewable energy sources such as solar power, wind power, and hydropower.

• Green technology also encompasses energy-efficient buildings, electric vehicles, and sustainable agriculture practices.

• Examples of green technology companies include Tesla, SolarCity, and F...read more

Thermodynamics deals with energy transfer in a system while heat transfer operations focus on the transfer of heat from one body to another.

• Thermodynamics is concerned with the study of energy and its transformation from one form to another.

• Heat transfer operations deal with the transfer of heat from one body to another.

• Thermodynamics is a theoretical concept while heat transfer operations are practical applications of thermodynamics.

• Thermodynamics involves the study of therm...read more

Various types of brakes include disc brakes, drum brakes, regenerative brakes, electromagnetic brakes, and hydraulic brakes.

• Disc brakes use calipers to squeeze brake pads against a rotor to slow or stop the vehicle.

• Drum brakes use shoes that press against the inside of a drum to slow or stop the vehicle.

• Regenerative brakes convert kinetic energy into electrical energy to recharge the battery.

• Electromagnetic brakes use an electromagnetic field to create friction and slow or st...read more

Different types of fit include clearance fit, interference fit, and transition fit.

• Clearance fit: parts are designed to have a gap between them, allowing for easy assembly and disassembly.

• Interference fit: parts are designed to be pressed or forced together, creating a tight and secure fit.

• Transition fit: parts have a small amount of overlap, creating a balance between clearance and interference fit.

• Examples include piston and cylinder in an engine, bearings in a machine, and...read more

Benson Boiler is the boiler that does not need a steam drum.

• Benson Boiler is a high-pressure, drumless, water tube steam boiler

• It works on the principle of critical pressure

• It is used in thermal power plants for generating power

• It has a high thermal efficiency and can handle a wide range of fuel types

I completed my college with 8 subjects.

• I pursued Bachelor of Engineering in Computer Science and Engineering.

• The total number of subjects in my college curriculum was 40.

• I had 8 subjects each semester, including theory and practical exams.

• The subjects included programming languages, data structures, algorithms, database management, computer networks, etc.

Sliding contact can be classified based on the type of motion and the nature of the surfaces in contact.

• Sliding contact can be classified as sliding, rolling, or twisting contact.

• Based on the nature of the surfaces in contact, sliding contact can be classified as dry or lubricated contact.

• Examples of sliding contact include the contact between brake pads and rotors, gears in a gearbox, and the contact between a piston and cylinder wall in an engine.

• Dry sliding contact can res...read more

Earthing and neutral are both important components of electrical systems, but they serve different purposes.

• Earthing is the process of connecting electrical equipment and installations to the earth to prevent electric shock and protect against electrical faults.

• Neutral is a current-carrying conductor that completes the circuit and provides a return path for the current back to the source.

• Earthing is primarily for safety purposes, while neutral is for the proper functioning of...read more

Pneumatics is used for its simplicity, reliability, and cost-effectiveness in various applications.

• Pneumatic systems are easy to install and maintain.

• They are reliable and have a long lifespan.

• Pneumatics are cost-effective compared to other systems.

• They are used in various applications such as manufacturing, transportation, and construction.

• Examples include pneumatic drills, air compressors, and pneumatic cylinders.

BPCL (Bharat Petroleum Corporation Limited) is a leading Indian oil and gas company.

• BPCL is a Fortune Global 500 company.

• It is involved in refining, marketing, and distribution of petroleum products.

• BPCL operates two large refineries in Mumbai and Kochi.

• The company also has a strong presence in the aviation fuel sector.

• BPCL is known for its focus on sustainability and corporate social responsibility.

I have strong technical skills in programming and software development, as well as excellent communication and problem-solving abilities.

• Proficient in programming languages such as Java, Python, and C++

• Experience in software development and testing

• Strong analytical and problem-solving skills

• Excellent communication and interpersonal abilities

• Ability to work well in a team and independently

• Familiarity with project management tools and methodologies

Adding petrol in a diesel engine can cause damage to the engine and reduce its efficiency.

• Petrol has lower lubricating properties than diesel, leading to increased wear and tear on engine components.

• Petrol can cause damage to the fuel injection system and fuel pump.

• The engine may misfire or stall due to the different combustion properties of petrol and diesel.

• Running a diesel engine on petrol can result in overheating and potential engine failure.

• It is important to drain the ...read more

The first law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.

• Energy is conserved in a system

• Energy can be transferred between different forms (e.g. heat, work)

• The total energy of a closed system remains constant

• Mathematically expressed as: ΔU = Q - W, where ΔU is the change in internal energy, Q is the heat added to the system, and W is the work done by the system

Yes, I have knowledge of automation.

• I have experience with scripting languages such as Python and Bash

• I have worked with automation tools like Selenium and Jenkins

• I am familiar with DevOps practices and continuous integration/continuous deployment (CI/CD)

• I have implemented automated testing for software applications

Net heat is not equal to net work done in most cases, as they represent different forms of energy transfer.

• Net heat is the transfer of thermal energy between systems due to a temperature difference.

• Net work done is the transfer of mechanical energy between systems due to a force acting over a distance.

• In many real-world scenarios, the net heat and net work done are not equal due to inefficiencies and losses.

• For example, in a car engine, some of the energy from burning fuel is...read more

Total reflux and partial reflux are terms used in distillation processes to describe the flow of liquid and vapor within a column.

• Total reflux occurs when all the condensed liquid is returned to the column as reflux, with no product being withdrawn.

• Partial reflux involves withdrawing some of the liquid product while returning the rest as reflux to the column.

• Total reflux is often used at the beginning of a distillation process to establish equilibrium, while partial reflux is...read more

Automation refers to the use of technology to perform tasks without human intervention.

• Automation can increase efficiency and productivity

• Examples of automation include robotic process automation, chatbots, and self-driving cars

• Automation can also lead to job displacement and ethical concerns

• Automation requires careful planning and implementation to ensure success

Safety is the state of being free from harm or danger.

• Safety involves identifying and assessing potential hazards

• It requires taking measures to prevent accidents and injuries

• It involves following established safety protocols and procedures

• Safety also includes being prepared for emergencies and knowing how to respond

• Regular training and education on safety practices is crucial

Convection is the transfer of heat through a fluid (liquid or gas) by the movement of the fluid itself.

• Convection occurs when a fluid is heated, becomes less dense, and rises, carrying heat with it.

• Cooler fluid then moves in to take its place, creating a continuous cycle of heat transfer.

• Examples include boiling water in a pot and the movement of air in a room heated by a radiator.

Pascal's laws state that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.

• Pressure applied to a confined fluid is transmitted equally in all directions.

• The pressure at any point in a fluid is the same in all directions.

• Examples include hydraulic systems and car brakes that utilize Pascal's laws to function effectively.

NABL stands for National Accreditation Board for Testing and Calibration Laboratories.

• NABL is an autonomous body under the Department of Science and Technology, Government of India.

• It provides accreditation to testing and calibration laboratories in various fields such as chemical, biological, mechanical, and electrical.

• Accreditation by NABL signifies that the laboratory meets international standards and is competent to carry out specific tests or calibrations.

• NABL accreditat...read more

Field growth is steady and promising with increasing demand and technological advancements.

• The field is experiencing steady growth with increasing demand for products and services

• Technological advancements are driving innovation and expanding the market

• New players are entering the field, increasing competition and driving growth

• Emerging markets are presenting new opportunities for expansion

• Overall, the outlook for field growth is positive

Anti-lock braking system (ABS) prevents wheels from locking up during braking, allowing driver to maintain steering control.

• ABS uses sensors to monitor wheel speed

• If a wheel is about to lock up, ABS modulates brake pressure to that wheel

• This prevents skidding and allows driver to steer while braking

• ABS is especially useful in slippery conditions like rain or snow

Principle of testing involves following standardized procedures to ensure accurate and reliable results.

• Testing should be based on established protocols and standards

• Proper controls should be in place to ensure accuracy

• Results should be reproducible and consistent

• Quality assurance measures should be implemented to maintain reliability

• Examples: following ASTM standards for material testing, using control samples in medical testing

Types of reactors include batch, continuous stirred-tank, plug flow, and fluidized bed reactors.

• Batch reactors operate in a closed system with a fixed amount of reactants.

• Continuous stirred-tank reactors have continuous flow of reactants and products.

• Plug flow reactors have a continuous flow with no mixing along the length of the reactor.

• Fluidized bed reactors use a fluid to suspend solid particles, allowing for better mixing and heat transfer.

Valves are devices used to control the flow of fluids or gases in a system by opening, closing, or partially obstructing passageways.

• Types of valves include ball valves, gate valves, globe valves, butterfly valves, check valves, and pressure relief valves.

• Ball valves have a spherical closure unit that allows for quick on/off control of flow.

• Gate valves have a gate-like disc that moves up and down to control flow.

• Globe valves have a disc that moves up and down to regulate flow...read more

My favorite subject is Thermodynamics because I enjoy studying the transfer of energy and heat.

• I find the laws of thermodynamics fascinating

• I enjoy analyzing heat transfer processes

• I like studying the relationship between energy and work

The subject of interest is the importance of safety measures in a LPG bottling plant.

• Safety measures are crucial in a LPG bottling plant to prevent accidents and ensure the well-being of workers.

• Examples of safety measures include regular equipment maintenance, proper training for employees, and strict adherence to safety protocols.

• Implementing safety measures can also help in preventing environmental hazards and ensuring compliance with regulations.

• Regular safety audits and ...read more