60+ SFO Technologies Interview Questions and Answers

A CNC machine is a computer-controlled machine tool used for precision machining of various materials.

• CNC stands for Computer Numerical Control.

• CNC machines are used in industries such as manufacturing, automotive, aerospace, and more.

• They are capable of performing complex operations with high precision and repeatability.

• Examples of CNC machines include CNC mills, lathes, routers, and plasma cutters.

We use a variety of gauges in our quality line, including micrometers, calipers, height gauges, and thread gauges.

• Micrometers are used to measure small dimensions with high accuracy.

• Calipers are used to measure the distance between two opposite sides of an object.

• Height gauges are used to measure the vertical distance between a reference point and the object being measured.

• Thread gauges are used to measure the pitch diameter and thread profile of screws and bolts.

1st angle and 3rd angle projection differ in the placement of the object and the observer in relation to the projection plane.

• 1st angle projection places the object in front of the projection plane, while 3rd angle projection places the object behind the projection plane.

• In 1st angle projection, the observer views the object from the opposite side of the projection plane, while in 3rd angle projection, the observer views the object from the same side as the projection plane.

• 1...read more

Quality is meeting or exceeding customer expectations. Dial Test Indicator measures small distances and deviations.

• Quality is the degree of excellence of a product or service that meets or exceeds customer expectations.

• Quality is achieved through a combination of processes, systems, and people.

• Dial Test Indicator is a precision measuring tool used to measure small distances and deviations in machined parts.

• It is commonly used in manufacturing and engineering industries to ens...read more

I address unsafe acts by educating, enforcing safety protocols, and providing incentives for safe behavior.

• Educate employees on safety protocols and the consequences of unsafe acts

• Enforce safety regulations consistently and fairly

• Provide incentives for safe behavior such as rewards or recognition

• Implement a reporting system for employees to raise concerns about unsafe acts

• Lead by example by following safety protocols yourself

The question is unclear and does not make sense in the context of CNC machines.

• The term 'infader' is not a commonly used term in the CNC industry.

• It is possible that the interviewer meant to ask about 'infeed' or 'feed rate' instead.

• The number of infeeds or feed rates in a CNC machine can vary depending on the specific machine and its programming.

• It is important to clarify any unclear questions in an interview to ensure accurate answers.

PM stands for Preventive Maintenance, Breakdown Maintenance is fixing equipment after it fails, Productive Maintenance is improving equipment to increase productivity.

• Preventive Maintenance (PM) involves regularly scheduled maintenance to prevent equipment failure.

• Breakdown Maintenance involves fixing equipment after it has failed.

• Productive Maintenance involves improving equipment to increase productivity and reduce downtime.

• Examples of PM include changing oil in a car or re...read more

Measuring instruments are tools used to quantify physical properties such as length, weight, temperature, and pressure.

• Measuring instruments are essential for accurate and precise measurements in various fields such as engineering, science, and manufacturing.

• Examples of measuring instruments include rulers, thermometers, scales, micrometers, and pressure gauges.

• Using measuring instruments ensures consistency and reliability in measurements, which is crucial for quality contro...read more

Our organization uses both hydraulic and pneumatic systems in various machines.

• We have hydraulic systems in our heavy machinery such as excavators and bulldozers.

• Our pneumatic systems are used in smaller machines like air compressors and drills.

• We have a total of 25 machines that use hydraulic systems and 15 machines that use pneumatic systems.

2-stroke engines have a power stroke every revolution, while 4-stroke engines have a power stroke every other revolution.

• 2-stroke engines are simpler and lighter than 4-stroke engines.

• 2-stroke engines have a higher power-to-weight ratio than 4-stroke engines.

• 2-stroke engines require a mixture of oil and fuel, while 4-stroke engines have separate oil and fuel systems.

• 4-stroke engines are more fuel-efficient and produce less pollution than 2-stroke engines.

• Examples of 2-stroke ...read more

Angle projection is a method of representing a 3D object on a 2D plane using angles.

• It involves projecting the object onto a plane at a specific angle.

• The angles used in the projection are typically 45 degrees or 30 degrees.

• This method is commonly used in engineering and architecture for creating technical drawings.

• It helps to show the true shape and size of the object in a clear and concise manner.

• Examples of angle projections include isometric, dimetric, and trimetric proje...read more

The least count of Vernier caliper is the smallest measurement that can be read on the scale.

• The least count is determined by the number of divisions on the Vernier scale and the main scale.

• It is usually 0.02 mm or 0.05 mm for a standard Vernier caliper.

• The least count can be calculated using the formula: Least count = (1 main scale division) / (number of divisions on Vernier scale).

Product cost is calculated by adding direct and indirect costs. Landed cost includes product cost and additional expenses.

• Product cost includes direct costs like raw materials, labor, and indirect costs like overheads.

• Landed cost includes product cost and additional expenses like shipping, customs, and taxes.

• Formula for product cost = direct costs + indirect costs.

• Formula for landed cost = product cost + additional expenses.

Vernier Caliper and Micrometer least count

• Least count of Vernier Caliper is 0.02 mm and Micrometer is 0.01 mm

• Least count is the smallest measurement that can be read on the instrument

• Vernier Caliper is used to measure length, diameter, depth, and thickness

• Micrometer is used to measure small distances, thickness, and diameters

TPM/KAIZEN/5S are methodologies for improving efficiency and productivity in manufacturing. CNC machine calibration involves ensuring accuracy and precision in machine operations.

• TPM (Total Productive Maintenance) focuses on maximizing equipment effectiveness through proactive maintenance and employee involvement.

• KAIZEN is a continuous improvement philosophy that involves making small, incremental changes to processes to achieve better results.

• 5S is a workplace organization m...read more

Vernier calipers least count is the smallest measurement that can be read on the scale of the caliper.

• The least count of a Vernier caliper is typically 0.02 mm or 0.001 inches.

• It is determined by dividing the smallest division on the main scale by the number of divisions on the Vernier scale.

• For example, if the smallest division on the main scale is 1 mm and there are 50 divisions on the Vernier scale, the least count would be 0.02 mm.

The least count of a Vernier caliper is typically 0.1 mm or 0.02 mm.

• The least count is the smallest measurement that can be read on the scale of the caliper.

• It depends on the design and precision of the caliper.

• For example, a standard Vernier caliper may have a least count of 0.1 mm, while a digital caliper may have a least count of 0.02 mm.

These are essential tools for a Senior Quality Engineer to ensure quality control and continuous improvement.

• Why-Why analysis helps to identify the root cause of a problem and develop effective solutions.

• Problem-solving techniques like DMAIC, PDCA, and 8D are used to systematically solve problems and improve processes.

• MSA (Measurement System Analysis) is used to evaluate the measurement system's accuracy, precision, and stability.

• SPC (Statistical Process Control) is used to m...read more

Cost run is the total cost incurred in running a business or project. It includes all expenses related to production, marketing, and administration.

• Cost run is calculated by adding up all the expenses incurred in running a business or project.

• Expenses include production costs, marketing costs, and administrative costs.

• To run cost effectively, businesses need to identify areas where they can reduce expenses without compromising on quality.

• Regular monitoring of expenses and bud...read more

Quality tools are techniques used to improve quality and productivity. Kaizen, 5S, fishbone diagram, and poka yoke are some examples.

• Kaizen is a continuous improvement process that involves everyone in the organization.

• 5S is a workplace organization method that involves sorting, simplifying, sweeping, standardizing, and sustaining.

• Fishbone diagram is a tool used to identify the root cause of a problem by analyzing its various contributing factors.

• Poka yoke is a mistake-proofi...read more

Full form of HMC machine is Horizontal Machining Center.

• HMC machine is a type of milling machine.

• It has a horizontal spindle orientation.

• It is used for high precision machining of complex parts.

• It is commonly used in the aerospace and automotive industries.

Assembly BIW production process involves various parameters to ensure weld quality.

• Ensure proper fit-up of components before welding

• Maintain correct welding parameters such as voltage, current, and travel speed

• Use appropriate shielding gas and welding consumables

• Regularly inspect and maintain welding equipment

• Implement quality control measures such as visual inspection and non-destructive testing

Manufacturing process involves converting raw materials into finished products through various steps and techniques.

• Manufacturing process starts with the design of the product

• Raw materials are sourced and inspected for quality

• Materials are processed through various methods like casting, molding, machining, etc.

• Quality control checks are performed at different stages

• Finished products are packaged and distributed to customers

Least count is the smallest measurement that can be made with an instrument.

• It is the smallest value that can be measured with an instrument.

• It is determined by the precision of the instrument.

• For example, the least count of a ruler with millimeter markings is 1 mm.

• It is important to consider the least count when making measurements to ensure accuracy.

Vernier calipers are of two types - standard and digital.

• Standard vernier calipers have a main scale and a sliding vernier scale.

• Digital vernier calipers have a digital display for easy reading.

• Both types can measure internal and external dimensions, as well as depth and step measurements.

• Some examples of vernier caliper brands include Mitutoyo, Starrett, and Fowler.

Quality refers to the degree of excellence of a product or service and meeting or exceeding customer expectations.

• Quality is a measure of how well a product or service meets customer requirements and expectations.

• Quality can be achieved through various methods such as quality control, quality assurance, and continuous improvement.

• Quality is important for customer satisfaction, brand reputation, and business success.

• Examples of quality tools and techniques include Six Sigma, L...read more

TPM stands for Total Productive Maintenance. Its aim is to maximize equipment effectiveness and minimize downtime.

• TPM is a maintenance strategy that involves all employees in the organization

• It aims to improve equipment reliability, reduce maintenance costs, and increase productivity

• TPM involves proactive maintenance, operator involvement, and continuous improvement

• Examples of TPM tools include autonomous maintenance, planned maintenance, and quality maintenance

• TPM also focus...read more

Tolerance refers to the acceptable range of variation in a measurement or specification.

• Tolerance is important in manufacturing to ensure that products meet the required specifications.

• It is usually expressed as a range of values or as a maximum deviation from a target value.

• For example, if a part is supposed to be 10 cm long with a tolerance of +/- 0.1 cm, it means that the actual length can be anywhere between 9.9 cm and 10.1 cm.

• Tolerance can also refer to the ability to ac...read more

A micrometer is a precision measuring instrument used to measure small distances or thicknesses.

• Micrometers are commonly used in manufacturing and engineering industries for quality control and precision measurements.

• They consist of a calibrated screw mechanism and a scale that measures the distance traveled by the screw.

• Micrometers can measure dimensions as small as a few micrometers (µm) or as large as several centimeters.

• They are often used to measure the thickness of mate...read more

Degree of freedom refers to the number of independent variables or parameters that can vary in a system.

• Degree of freedom is the number of variables that can be changed independently without affecting the overall system.

• In mechanics, a rigid body in a plane has 3 degrees of freedom - two translations and one rotation.

• In thermodynamics, a simple compressible substance has 2 degrees of freedom - temperature and pressure.

• In statistics, degrees of freedom are used in hypothesis t...read more

Inprosses on line is an online platform that provides various services to businesses and individuals.

• Offers services like web development, digital marketing, and content creation

• Helps businesses to establish their online presence

• Provides training and consultation services to individuals and organizations

• Offers customized solutions to meet the specific needs of clients

Standard cost is calculated by adding up all the direct and indirect costs of production.

• Direct costs include materials, labor, and overhead expenses.

• Indirect costs include rent, utilities, and depreciation.

• Once all costs are added up, divide by the number of units produced to get the standard cost per unit.

• Standard cost is used to compare actual costs and identify areas for improvement.

MTTR stands for Mean Time To Repair and MTBF stands for Mean Time Between Failures.

• MTTR is the average time taken to repair a failed equipment or system.

• MTBF is the average time between two consecutive failures of a system or equipment.

• MTTR and MTBF are important metrics used in maintenance engineering to measure the reliability and maintainability of equipment.

• MTTR and MTBF can be used to identify areas for improvement in maintenance processes and to optimize maintenance sch...read more

Pokayoke is a Japanese term for mistake-proofing. It is a technique used to prevent errors in a process.

• Pokayoke involves designing a process or product in a way that makes it impossible to make a mistake.

• It can be achieved through the use of sensors, alarms, or physical barriers.

• Examples of pokayoke include car keys that cannot be removed unless the car is in park, or a phone charger that only fits into the charging port one way.

• Pokayoke helps to improve quality, reduce wast...read more

HIRA study is conducted by identifying hazards, assessing risks, and implementing control measures.

• Identify all potential hazards in the workplace or process.

• Assess the risks associated with each hazard by considering the likelihood and severity of potential harm.

• Prioritize the risks based on the level of risk and potential impact.

• Implement control measures to eliminate or reduce the risks identified.

• Regularly review and update the HIRA study to ensure effectiveness.

A plastic bottle viewed from the top.

• The top of the bottle will be circular or oval in shape.

• The cap or lid of the bottle will be visible.

• The size and shape of the bottle will determine the size and shape of the top view.

• The contents of the bottle may be visible from the top view.

The mechanism in a hydraulic press is the system of components that allows for the transmission of force through a fluid to generate a large amount of pressure.

• Hydraulic press uses a hydraulic cylinder to generate force.

• The force is transmitted through a fluid, typically oil or water.

• The mechanism includes valves, pumps, and pistons to control the flow of the fluid and generate pressure.

• The pressure created by the mechanism allows the hydraulic press to perform tasks such as ...read more

Petrol engines use spark ignition while diesel engines use compression ignition.

• Petrol engines use a spark plug to ignite the fuel-air mixture while diesel engines compress the air to a high temperature and pressure to ignite the fuel.

• Petrol engines are generally more powerful and responsive while diesel engines are more fuel-efficient and have more torque.

• Petrol engines are lighter and quieter while diesel engines are heavier and noisier.

• Petrol engines are more suitable for ...read more

Quality engineering is a process that ensures products or services meet specified requirements and customer expectations.

• Quality engineering involves planning, designing, and implementing quality control measures.

• It focuses on preventing defects and improving processes to enhance product quality.

• Quality engineering uses various tools and techniques such as statistical analysis, root cause analysis, and quality audits.

• It involves continuous monitoring, testing, and evaluation ...read more

Quality control is the process of ensuring that products or services meet the desired level of quality.

• It involves setting standards and specifications for the product or service

• It includes monitoring and inspecting the product or service during production or delivery

• It also involves taking corrective action if the product or service does not meet the desired level of quality

• Examples include checking the weight and size of a product, testing the functionality of a software ap...read more

There are several types of dials used in various industries and applications.

• Types of dials include analog dials, digital dials, and combination dials.

• Analog dials have a rotating needle or pointer that indicates a value on a scale.

• Digital dials display values numerically on a digital screen.

• Combination dials have both analog and digital components.

• Examples of dials include speedometers, thermometers, pressure gauges, and fuel gauges.

Product quality information is crucial for the customer to make informed decisions and ensure satisfaction.

• Provide detailed specifications and features of the product

• Highlight any certifications or awards received for quality

• Share customer reviews and testimonials showcasing satisfaction with the product

• Offer warranty information to assure customers of product durability

• Provide comparisons with competitors to demonstrate superiority in quality

Understanding customer needs is crucial for aligning sales and marketing strategies to drive business growth.

• Identify customer pain points and challenges

• Tailor sales and marketing messages to address specific customer needs

• Provide solutions that meet customer requirements and add value

• Build relationships with customers to gain insights into their preferences and priorities

BOM stands for Bill of Materials.

• A comprehensive list of raw materials, components, and assemblies required to manufacture a product.

• Used in manufacturing, engineering, and supply chain management.

• Helps in determining the cost of a product and planning production schedules.

• Example: BOM for a car would include engine, tires, seats, etc.

Micrometre is a precision measuring instrument used to measure small distances accurately.

• Micrometre consists of a stationary anvil and a movable spindle.

• The object to be measured is placed between the anvil and spindle, and the spindle is turned to make contact with the object.

• The measurement is read from the scale on the sleeve and thimble of the micrometre.

• Micrometres are commonly used in engineering and manufacturing for precise measurements.

• Example: Measuring the thickne...read more

Forging and rolling are two common metalworking processes used to shape metal into desired forms.

• Forging involves shaping metal by applying compressive forces, typically using a hammer or press.

• Types of forging include open-die forging, closed-die forging, and impression-die forging.

• Rolling involves passing metal between rollers to reduce thickness or change shape.

• Types of rolling include hot rolling, cold rolling, and ring rolling.

I assess the supplier based on their quality of products, delivery time, pricing, and communication.

• Evaluate the quality of their products

• Assess their delivery time and reliability

• Compare their pricing with competitors

• Evaluate their communication and responsiveness

• Consider their reputation and past performance

• Conduct site visits and audits if necessary

Forging is a manufacturing process involving the shaping of metal using localized compressive forces.

• Heating the metal to a high temperature to make it more malleable

• Applying compressive forces to shape the metal into the desired form

• Cooling the forged metal to strengthen it

• Types of forging include open-die forging, closed-die forging, and seamless rolled ring forging

It is important to consider the company's expectations and timeline for joining when discussing CTC and joining date.

• Discuss the reasons for the 45-day joining timeline and see if it is negotiable.

• Consider the impact on current job and responsibilities before committing to a 45-day joining period.

• Evaluate the overall compensation package and benefits offered by the company before making a decision.

• Communicate any concerns or constraints regarding the 45-day joining period to ...read more

Robot calibration is required to ensure accurate and precise performance of the robot.

• Robot calibration is necessary to correct any errors or inaccuracies in the robot's movements.

• It helps in achieving precise positioning and alignment of the robot's end effector.

• Calibration ensures that the robot's movements are consistent and repeatable.

• It helps in maintaining the robot's accuracy over time and with regular use.

• Calibration is important for tasks that require high precision,...read more

A centrifugal pump is a mechanical device that uses centrifugal force to move fluids through a piping system.

• It works by converting rotational kinetic energy into hydrodynamic energy.

• Fluid enters the pump through the center of a rotating impeller and is flung outward by centrifugal force.

• The fluid then exits the pump through a discharge nozzle.

• Centrifugal pumps are commonly used in industries such as oil and gas, chemical processing, and water treatment.

• Examples of centrifuga...read more

Quality instruments are tools or equipment that meet high standards of accuracy, durability, and reliability.

• Quality instruments are essential for precise measurements and reliable results.

• They are often used in scientific research, medical procedures, and industrial manufacturing.

• Examples include microscopes, spectrophotometers, surgical instruments, and electronic testing equipment.

• Regular maintenance and calibration are necessary to ensure the continued accuracy and reliab...read more

My favourite subject is mathematics.

• I enjoy solving complex problems and equations.

• I find it satisfying to arrive at a correct answer after working through a difficult problem.

• Mathematics is a fundamental subject that is applicable in many fields, from science to finance.

• I particularly enjoy calculus and statistics.

Screw gauge is a measuring instrument used to measure the diameter of a wire or thickness of a sheet.

• Also known as micrometer screw gauge

• Consists of a U-shaped frame with a screw mechanism

• The screw has a calibrated scale and a thimble for precise measurement

• Used in industries like manufacturing, engineering, and metalworking

• Example: Used to measure the thickness of a sheet of metal in a factory

APQP is a structured process for developing new products or processes.

• Plan and define the program scope

• Design and develop the product or process

• Validate the product or process

• Launch the product or process

• Monitor and improve the product or process

• Use tools like FMEA, PPAP, and Control Plans

• Collaborate with cross-functional teams

• Ensure compliance with industry standards and regulations

CC in engine refers to the engine displacement, which is the total volume of all the cylinders in an engine.

• CC stands for cubic centimeters

• It is a unit of measurement for engine displacement

• Higher CC generally means more power and torque

• For example, a 2.0L engine has a displacement of 2000cc

The Cmm least count number refers to the smallest measurement that can be accurately determined by a Coordinate Measuring Machine (CMM).

• The least count number is determined by the resolution of the CMM's measuring system.

• It represents the smallest increment that can be detected by the CMM.

• For example, if the CMM has a least count of 0.001 mm, it means that it can accurately measure differences of 0.001 mm or larger.

• The least count number is important for ensuring precision an...read more

Quality control is a process used to ensure products meet specific standards and requirements before being released to the market.

• Quality control involves monitoring and testing products to identify defects or deviations from specifications.

• It helps in maintaining consistency and reliability in product quality.

• Quality control can include activities such as inspections, sampling, and testing of raw materials and finished products.

• Examples of quality control measures include vi...read more

A CNC machine is a computer-controlled machine tool used for precision machining.

• CNC stands for Computer Numerical Control.

• It uses programmed instructions to control the movement of the machine.

• CNC machines can perform various operations like cutting, drilling, turning, and milling.

• They are widely used in industries such as manufacturing, aerospace, automotive, and electronics.

• CNC turning machines are specifically designed for rotating a workpiece while a cutting tool removes...read more

SAP T codes are transaction codes used in SAP systems to execute specific functions. Each T code is associated with a specific user role.

• SAP T code: MM01 - Create Material Master

• User: Purchase Manager

• SAP T code: ME21N - Create Purchase Order

• User: Purchase Coordinator

My favorite subject is Mathematics.

• I enjoy solving complex problems and equations.

• I find satisfaction in finding the correct solution.

• Mathematics is a fundamental subject that is applicable in various fields such as engineering, finance, and science.