10+ Obtenir Solutions Interview Questions and Answers

Control diagram of a motor with remote and local start using star delta starter.

• Use a star delta starter for reduced voltage starting

• Include a remote start/stop switch in the control circuit

• Use a contactor to switch between star and delta connections

• Include overload protection in the circuit

• Use a control transformer to step down voltage for control circuit

• Include a pilot light to indicate motor status

I will analyze the process flow, identify repetitive tasks, and implement automation tools to streamline the process.

• Analyze the current process flow

• Identify repetitive tasks that can be automated

• Select appropriate automation tools

• Implement automation tools and test thoroughly

• Monitor and optimize the automated process

EOt crane is an electric overhead traveling crane used for lifting and moving heavy loads in industrial settings.

• EOt stands for Electric Overhead Traveling

• It is operated by an electrical control system

• It consists of a bridge, hoist, trolley, and electrical components

• It is commonly used in factories, warehouses, and construction sites

• It can lift and move heavy loads up to several tons

• It requires regular maintenance and safety checks

Transformers, motors, generators, and electric generation are essential components in electrical systems.

• Transformers are devices that transfer electrical energy between two or more circuits through electromagnetic induction.

• Motors convert electrical energy into mechanical energy to drive machinery.

• Generators convert mechanical energy into electrical energy.

• Electric generation involves the process of producing electricity from various sources such as coal, natural gas, nuclea...read more

First angle projection and third angle projection are two different methods used in mechanical drawings to represent a 3D object on a 2D plane.

• First angle projection is commonly used in Europe and Asia, while third angle projection is commonly used in North America.

• In first angle projection, the object is placed in the first quadrant and the views are projected onto the planes surrounding the object.

• In third angle projection, the object is placed in the third quadrant and the...read more

Design steps refer to the process of creating a plan or blueprint for a product or system.

• Identifying the problem or need

• Researching and gathering information

• Brainstorming and generating ideas

• Creating sketches or prototypes

• Testing and evaluating the design

• Refining and finalizing the design

• Implementing and producing the final product

Equipment in a steel plant have specific functions like melting, shaping, and cooling metal to produce various steel products.

• Blast furnace - melts iron ore to produce molten iron

• Electric arc furnace - uses electricity to melt scrap metal and produce steel

• Rolling mill - shapes the molten metal into various forms like sheets, bars, or beams

• Cooling bed - cools down the hot steel products after shaping process

• Annealing furnace - heat treats the steel to improve its properties li...read more

Different types of castings & their uses

• Sand casting: used for large and complex shapes like engine blocks

• Investment casting: used for intricate and detailed parts like jewelry

• Die casting: used for high-volume production of small to medium-sized parts like car components

• Centrifugal casting: used for cylindrical shapes like pipes and tubes

• Continuous casting: used for producing long and continuous shapes like steel billets

DC motors are electric motors that operate using direct current (DC) power sources.

• DC motors convert electrical energy into mechanical energy through the interaction of magnetic fields.

• They are commonly used in appliances, power tools, and electric vehicles.

• DC motors have two main types: brushed DC motors and brushless DC motors.

• Brushed DC motors use brushes to conduct current, while brushless DC motors use electronic controllers.

• DC motors can vary in size and power output de...read more

The manufacturing process for producing a component involves several steps.

• Designing the component

• Material selection

• Machining or forming the raw material

• Assembly of the component

• Quality control and inspection

Manufacturing processes are techniques used to transform raw materials into finished products.

• Casting: pouring molten metal into a mold to create a solid object (e.g. automotive engine blocks)

• Machining: removing material from a workpiece using cutting tools (e.g. CNC milling)

• Forming: shaping materials through deformation (e.g. sheet metal bending)

• Joining: combining multiple parts into a single entity (e.g. welding)

• Additive Manufacturing: building objects layer by layer using ...read more

SCR stands for Selective Catalytic Reduction. It is a technology used to reduce nitrogen oxide emissions from diesel engines.

• SCR uses a catalyst to convert harmful nitrogen oxides into harmless nitrogen and water vapor.

• It requires a urea-based solution called AdBlue to work.

• SCR is commonly used in heavy-duty vehicles like trucks and buses.

• It is an effective way to meet emissions regulations without sacrificing engine performance.

Proxy is an intermediary server that acts as a gateway between clients and servers. SMPS is a power supply unit that converts AC to DC. Encoder is a device that converts motion into digital signals. Star delta is a method of starting three-phase motors.

• Proxy helps in hiding the identity of clients and servers.

• SMPS is commonly used in computers and other electronic devices.

• Encoders are used in robotics, automation, and CNC machines.

• Star delta is used to reduce the starting cur...read more

Measuring instruments are used in various applications to accurately measure physical quantities.

• Quality control in manufacturing processes

• Monitoring and controlling environmental conditions

• Testing and calibration of equipment

• Research and development

• Process optimization and efficiency improvement

• Data collection and analysis

• Safety and hazard detection

• Medical diagnostics and patient monitoring

Nodal analysis is a method used in electrical engineering to determine the voltage at each node in a circuit.

• Nodal analysis involves writing Kirchhoff's Current Law equations for each node in a circuit.

• It is used to analyze complex circuits with multiple nodes and voltage sources.

• The goal of nodal analysis is to determine the voltage at each node relative to a reference point, usually ground.

• It is a powerful tool for solving circuit problems and designing circuits efficiently...read more

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used to step up or step down voltage levels in power distribution systems

• Commonly used in power substations, electrical appliances, and ...read more

Fe-C diagram is a graphical representation of the phases present in steel at different temperatures and compositions.

• Fe-C diagram stands for Iron-Carbon diagram

• It shows the phases of steel at different temperatures and compositions

• It helps in understanding the microstructure of steel and predicting its properties

• Examples of phases shown in Fe-C diagram include ferrite, austenite, cementite, and pearlite

Ensuring security and safety measures for employees is crucial for their well-being and productivity.

• Implementing access control systems to restrict unauthorized entry

• Providing training on emergency procedures and evacuation plans

• Installing surveillance cameras to monitor premises

• Regularly conducting safety audits and inspections

• Offering self-defense classes or workshops for employees