1000+ Engineer Interview Questions and Answers

Turbocharger uses exhaust gases to spin a turbine while supercharger uses engine's crankshaft to spin a compressor.

• Turbocharger is more efficient at higher altitudes while supercharger is more efficient at lower altitudes.

• Turbocharger has a lag time before it kicks in while supercharger provides instant boost.

• Turbocharger is quieter while supercharger is louder due to its mechanical nature.

• Examples of cars with turbochargers include Volkswagen Golf GTI and Subaru WRX while ex...read more

OTD maintenance involves ensuring the smooth functioning of products and their secure technology.

• OTD maintenance refers to the process of maintaining products and ensuring their smooth functioning.

• It involves collecting and analyzing data to identify potential issues and prevent downtime.

• The process includes regular inspections, repairs, and upgrades to keep the technology secure.

• Product introduction involves educating customers about the features and benefits of the product....read more

The material chosen for the shaft and gear depends on factors such as load, speed, and operating conditions.

• Consider the load and speed requirements of the shaft and gear.

• Evaluate the operating conditions, such as temperature and corrosion resistance.

• Common materials for shafts include steel, stainless steel, and titanium.

• Common materials for gears include steel, cast iron, and bronze.

• The material selection should ensure durability, strength, and compatibility with other comp...read more

I approach troubleshooting electrical circuits by following a systematic process to identify and resolve the issue.

• Start by checking for obvious issues such as loose connections or blown fuses.

• Use a multimeter to test for continuity and voltage at different points in the circuit.

• Trace the circuit diagram to identify potential areas of concern.

• Isolate components to test individually for faults.

• Consult technical manuals or online resources for troubleshooting tips.

• Document each...read more

Earthquake effects on structures and design process, including Richter scale and other scales.

• Earthquakes can cause various effects on structures, such as shaking, ground rupture, and liquefaction.

• The design process for structures takes into account the potential seismic forces and aims to ensure safety.

• The Richter scale is a logarithmic scale used to measure the magnitude of an earthquake.

• Other scales used for earthquakes include the moment magnitude scale (Mw) and the modif...read more

Transformer stability test is performed to ensure the reliable operation of the transformer under various operating conditions.

• Transformer stability test involves subjecting the transformer to different load conditions and monitoring its performance.

• The test is conducted to assess the ability of the transformer to withstand variations in load and maintain voltage regulation.

• During the test, the transformer is operated at different load levels and the voltage, current, and tem...read more

Daily maintenance schedules of machineries

• Check oil levels and top up if necessary

• Inspect and clean filters

• Check for any signs of wear and tear

• Lubricate moving parts

• Check for any leaks or unusual noises

• Perform any necessary repairs or replacements

• Keep a record of maintenance performed

The moment of inertia for a circular cross sectional part depends on its radius and mass distribution.

• The moment of inertia is a measure of an object's resistance to rotational motion.

• For a circular cross section, the moment of inertia is given by (π/4) x r^4, where r is the radius.

• The mass distribution of the part also affects the moment of inertia.

• A solid cylinder has a higher moment of inertia than a hollow cylinder with the same mass and radius.

To upgrade software in OLT, ONT, and Tejas 1400 locally and from NMS, follow these steps.

• Locally: Use a USB drive to transfer the software update file to the device. Access the device's management interface and initiate the upgrade process.

• From NMS: Use the Network Management System (NMS) to remotely push the software update to the devices. Schedule the upgrade during off-peak hours to minimize disruption.

• Ensure compatibility: Check the release notes of the software update to...read more

To reduce defects and increase productivity, focus on continuous improvement, training, quality control, and efficient processes.

• Implement a quality control system to catch defects early on

• Provide regular training to employees to improve skills and knowledge

• Analyze data to identify root causes of defects and implement corrective actions

• Streamline processes to eliminate waste and improve efficiency

Yes, I am familiar with the relevant standards of the domain.

• I have studied and implemented the standards in my previous projects.

• I keep myself updated with the latest changes in the standards.

• For example, I am familiar with ISO 9001 for quality management and IEEE 802.11 for wireless networking.

A circuit for a set of logic equations using PLA

• PLA stands for Programmable Logic Array

• PLA is a type of digital circuit used to implement combinational logic circuits

• The circuit consists of an AND array and an OR array

• Inputs are fed into the AND array and the outputs are fed into the OR array

• Example: A PLA circuit for a 2-input XOR gate would have 2 inputs, 2 AND gates, and 1 OR gate

Various types of equipment are available for furnace dust catching.

• Cyclone separators

• Electrostatic precipitators

• Bag filters

• Wet scrubbers

• Venturi scrubbers

Different types of footings and their design

• Types of footings include spread footings, strip footings, and mat footings

• Spread footings are used for individual columns or walls

• Strip footings are used for a row of columns or walls

• Mat footings are used for large structures or where soil bearing capacity is low

• One-way footings distribute load in one direction, while two-way footings distribute load in two directions

• Design of footings involves calculating the size and depth based ...read more

Positive displacement pumps move fluid by trapping a fixed amount and forcing it into the discharge pipe.

• Positive displacement pumps move fluid by trapping a fixed amount and forcing it into the discharge pipe.

• They create a constant flow rate regardless of the system pressure.

• Examples include reciprocating pumps, rotary pumps, and diaphragm pumps.

• Non-positive displacement pumps, like centrifugal pumps, use impellers to increase the fluid's velocity and transfer it to the disc...read more

To modify drive parameters, access the drive's programming interface and adjust the desired settings.

• Identify the type of drive being used (e.g. AC drive, DC drive, servo drive)

• Access the drive's programming interface (e.g. keypad, software)

• Adjust the desired parameters (e.g. speed, torque, acceleration)

• Save the changes and test the drive's performance

• Examples of drive manufacturers with programming interfaces include Siemens, ABB, and Schneider Electric

CT meter measures current while DT meter measures energy consumption.

• CT meter measures the current flowing through a circuit while DT meter measures the energy consumption of a circuit over a period of time.

• CT meter is used for protection and control purposes while DT meter is used for billing and energy management purposes.

• CT meter is used in high voltage applications while DT meter is used in low voltage applications.

• Examples of CT meters include Wound Primary CT, Bar Prima...read more

Designing a memory organization based on size and block units.

• Determine the size of the memory and the size of each block unit

• Choose a suitable memory organization scheme such as direct mapping, associative mapping, or set-associative mapping

• Implement the chosen scheme and test for efficiency and accuracy

A random number generator circuit diagram can be created using a noise source and an amplifier.

• Use a noise source such as a Zener diode or a reverse-biased transistor

• Amplify the noise signal using an amplifier circuit

• Use a comparator to convert the analog signal to a digital signal

• Add a clock circuit to control the output frequency

Cycle times for machines can be calculated by dividing the total production time by the number of cycles completed.

• Determine the total production time for the machine

• Count the number of cycles completed by the machine

• Divide the total production time by the number of cycles to calculate the cycle time

A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.

• Bearings are used in various applications such as automobiles, airplanes, and industrial machinery.

• There are different types of bearings such as ball bearings, roller bearings, and plain bearings.

• 30215 is a tapered roller bearing commonly used in automotive and industrial applications.

MPLS stands for Multiprotocol Label Switching. It is a protocol used in high-performance telecommunications networks.

• Advantages of MPLS include improved performance, scalability, quality of service, and traffic engineering capabilities

• MPLS allows for efficient packet forwarding based on labels instead of IP addresses

• MPLS can support different types of traffic, such as voice, video, and data, with different service levels

• MPLS is often preferred for large networks with high tra...read more

To revive the furnace, we need to identify the cause of MBF chilling and take appropriate measures.

• Check for any blockages in the furnace pipes

• Ensure proper fuel supply and ignition system

• Inspect the refractory lining for any damage

• Monitor the temperature and adjust accordingly

• Chilling of MBF can be caused by low fuel supply, improper combustion, or damaged refractory lining

When a customer complaint arises, I listen attentively, empathize with their concerns, investigate the issue, propose a solution, and follow up to ensure satisfaction.

• Listen attentively to the customer's complaint

• Empathize with their concerns and show understanding

• Investigate the issue by gathering relevant information

• Propose a solution or offer alternatives to address the complaint

• Follow up with the customer to ensure their satisfaction

Surge arrester protects transformer from voltage surges. EAF uses furnace transformers. Max demand is the highest power demand in a given period.

• Surge arrester diverts high voltage surges to ground, protecting transformer insulation.

• EAF (Electric Arc Furnace) uses furnace transformers to supply power to the furnace.

• Max demand is the highest power demand in a given period, usually measured in kilowatts (kW) or megawatts (MW).

M29 is a G-code used to stop writing to an SD card or other storage device.

• M29 is used to end a file when writing to an SD card or other storage device.

• It ensures that all data is written and prevents corruption of the file.

• It is commonly used in CNC machines for drilling and tapping programs.

• It can also be used for hole dialing and other precision operations.

• M29 is often used in conjunction with other G and M codes to create complex programs.

Gauges and fixtures should be developed during the design phase of NPD to ensure quality and efficiency.

• Identify critical dimensions and tolerances early on

• Develop gauges and fixtures to measure and verify these dimensions

• Test and refine gauges and fixtures throughout the design process

• Ensure gauges and fixtures are compatible with manufacturing processes

• Finalize gauges and fixtures before production begins

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

Mould oscillator and electromagnetic stirrer are used in caster to improve the quality of casted steel.

• Mould oscillator is a device that vibrates the mould during casting to prevent solidification defects and improve the surface quality of the steel.

• Electromagnetic stirrer is used to create a rotating magnetic field in the molten steel to improve the homogeneity of the steel and reduce inclusions.

• Both devices are used in continuous casting process to improve the quality of th...read more

Thermocouple is a temperature sensor that works on the principle of Seebeck effect.

• It consists of two dissimilar metals joined together at one end.

• When there is a temperature difference between the two ends, it generates a voltage.

• This voltage is proportional to the temperature difference and can be measured to determine the temperature.

• Thermocouples are commonly used in industrial applications such as furnaces, boilers, and ovens.

• They are also used in automotive and aerospac...read more

Angular contact ball bearings can handle both axial and radial loads.

• Angular contact ball bearings are designed to handle both axial and radial loads.

• They have a contact angle between the balls and the raceways, allowing them to support axial loads.

• At the same time, they can also support radial loads due to their design.

• These bearings are commonly used in applications where both types of loads are present, such as in machine tools and automotive applications.

To manage and debug threads and workers in Python, use built-in modules like threading and multiprocessing, and tools like logging and debugging libraries.

• Use the 'threading' module for managing threads in Python

• Use the 'multiprocessing' module for managing worker processes

• Utilize tools like logging to track the execution flow of threads and workers

• Use debugging libraries like 'pdb' or 'pydev' for debugging threads and workers

• Ensure proper synchronization and communication be...read more

The pitch system in engineering controls the angle of the blades on a wind turbine or aircraft to optimize performance.

• Pitch system adjusts blade angle to control speed and power output

• Can be controlled manually or automatically based on wind conditions

• Diagram should show blades connected to pitch system and control mechanism

The question is unclear and does not make sense.

• The question needs to be rephrased or clarified.

• It is not clear what the interviewer is asking for.

In 5 years, I see myself as a senior engineer leading a team of talented individuals, working on cutting-edge projects and making significant contributions to the field.

• Leading a team of engineers

• Working on advanced projects

• Making significant contributions to the field

• Continuing professional development

• Building a strong network within the industry

Different kinds of cards used in Tejas 1400 and 1600 mux include line cards, switch cards, and power cards.

• Line cards: used for connecting the mux to external devices

• Switch cards: used for routing data within the mux

• Power cards: used for providing power to the mux

• Examples: STM-1 line card, STM-4 switch card, power supply card

Layer-2 and layer-3 services refer to different levels of network services in the OSI model.

• Layer-2 services operate at the data link layer and include functions like MAC address assignment and Ethernet switching.

• Layer-3 services operate at the network layer and include functions like IP address assignment and routing.

• The main difference between layer-2 and layer-3 services is the level at which they operate in the OSI model.

• Layer-2 services are more focused on local network ...read more

Quality tools are techniques or methods used to ensure the quality of a product or service.

• Quality tools help in identifying and solving problems in a systematic way.

• They can be used in various stages of a project, from planning to execution.

• Examples of quality tools include flowcharts, Pareto charts, cause-and-effect diagrams, and statistical process control charts.

Answering questions related to past work experience, test cases, and manual testing in an engineering interview.

• Past company work process involved collaborating with team members to design and implement engineering solutions.

• Roles and responsibilities included coding, testing, and debugging software, as well as participating in project meetings and providing technical support.

• Test cases for a pen could include checking ink flow, writing on different surfaces, and testing dura...read more

Steel is a metal alloy made primarily of iron and carbon.

• Steel is known for its strength, durability, and versatility.

• It is used in construction, manufacturing, transportation, and many other industries.

• Different types of steel can be created by varying the amount of carbon and other elements added to the alloy.

• Stainless steel, for example, contains chromium and nickel to resist corrosion.

• High-strength low-alloy steel (HSLA) contains small amounts of alloying elements to incr...read more

VLOOKUP and XLOOKUP are Excel functions used to search for a value in a table and return a corresponding value.

• VLOOKUP stands for 'Vertical Lookup' and searches for a value in the first column of a table and returns a value in the same row from a specified column.

• XLOOKUP is a newer function that can search both vertically and horizontally in a table and has more flexibility in its syntax.

• VLOOKUP requires the lookup value to be in the first column of the table, while XLOOKUP a...read more

The maximum load force in a four high rolling mill can be calculated using the formula: Maximum Load Force = Frictional Force + Rolling Force

• Frictional force is the force required to overcome the friction between the rolls and the metal being rolled.

• Rolling force is the force required to deform the metal being rolled.

• The maximum load force is the sum of the frictional force and the rolling force.

• The frictional force can be calculated using the formula: Frictional Force = Coef...read more

SMPS stands for Switched Mode Power Supply, sensors include temperature, pressure, proximity, etc., cooling towers are used for heat rejection in HVAC systems.

• SMPS stands for Switched Mode Power Supply and is a type of power supply that uses a switching regulator to convert electrical power efficiently.

• Different types of sensors include temperature sensors, pressure sensors, proximity sensors, etc., which are used to detect and measure physical properties.

• Cooling towers are h...read more

Technical documentation is a written material that explains how to use, maintain, or troubleshoot a product or system.

• It includes user manuals, installation guides, technical specifications, and other related documents.

• It provides information about the product's features, functions, and capabilities.

• It helps users understand how to operate the product or system safely and effectively.

• It also includes troubleshooting tips and solutions to common problems.

• Examples include softw...read more

HST stands for Heat Shrink Tubing, used in wire harness for insulation and protection.

• HST is a type of tubing that shrinks when heat is applied, providing insulation and protection to wires in a harness.

• It helps in preventing short circuits, abrasion, and moisture damage.

• HST is commonly used in automotive, aerospace, and electronics industries.

• Examples of HST brands include 3M, TE Connectivity, and Panduit.

HV and air leak tests are essential for ensuring safety and quality of products before delivery to customers.

• HV test, or high voltage test, is conducted to check insulation integrity and electrical safety of the product.

• Air leak test is performed to verify the sealing integrity of the product, ensuring no leaks that could compromise performance or safety.

• These tests are required for customers to guarantee that the products meet safety standards and specifications.

• HV and air l...read more

SKF is a leading global supplier of products, solutions, and services within the engineering industry.

• SKF is known for its high-quality bearings and seals used in various applications.

• The company has a strong reputation for innovation and technological advancements.

• SKF has a global presence with manufacturing facilities and sales offices in multiple countries.

• They provide comprehensive engineering solutions and services to various industries such as automotive, aerospace, and...read more