10+ Adda 247 Interview Questions and Answers

ESD is Electrostatic Discharge, 7QC is Seven Quality Control tools, Quality is meeting customer requirements.

• ESD is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown.

• 7QC tools are used for process improvement and include Pareto chart, cause-and-effect diagram, control chart, histogram, scatter diagram, flowchart, and check sheet.

• Quality is meeting customer requirements and expectations. It i...read more

A team is a group of individuals working together towards a common goal, while a group is a collection of people with a shared interest or purpose.

• A team has a clear purpose and specific roles for each member.

• A team has a higher level of interdependence and collaboration compared to a group.

• Teams often have a leader or a designated person responsible for coordinating and guiding the team's efforts.

• Groups can be more informal and may not have a designated leader or defined rol...read more

To make a product good quality, it needs to meet customer requirements and industry standards.

• Understand customer needs and expectations

• Define quality standards and requirements

• Implement quality control processes

• Conduct thorough testing and inspections

• Continuously improve product based on feedback

• Ensure compliance with industry regulations and standards

There are various types of heads used in SMT, such as nozzle heads, placement heads, and solder paste heads.

• Nozzle heads are used to pick and place components onto the PCB.

• Placement heads are responsible for accurately positioning components on the PCB.

• Solder paste heads dispense solder paste onto the PCB pads before component placement.

• Other types of heads include inspection heads for quality control and cleaning heads for maintenance.

A team is a cohesive unit working towards a common goal, while a group is a collection of individuals with no specific goal or purpose.

• Team members have complementary skills and work interdependently towards a shared objective

• Groups may not have a clear leader or defined roles

• Teams have a strong sense of accountability and responsibility

• Groups may lack accountability and may not be as focused on achieving a specific outcome

Promises and async/await are used in JavaScript to handle asynchronous operations and avoid callback hell.

• Promises are objects representing the eventual completion or failure of an asynchronous operation.

• Async/await is a syntactic sugar built on top of promises, making asynchronous code look synchronous.

• Promises can be chained using .then() and .catch() to handle success and error cases.

• Async functions return a promise, allowing you to use await to pause execution until the p...read more

Instruments are devices used to measure physical quantities, while gauges are instruments used to measure the dimensions of an object.

• Instruments are used to measure physical quantities such as temperature, pressure, and flow rate.

• Gauges are used to measure the dimensions of an object, such as its thickness or diameter.

• Instruments can be electronic or mechanical, while gauges are typically mechanical.

• Examples of instruments include thermometers, pressure sensors, and flow met...read more

Least count of slip gauges is the smallest measurement that can be made using the slip gauge set.

• It is determined by the smallest difference between two slip gauges in the set.

• It is usually expressed in microns or thousandths of an inch.

• For example, if the smallest difference between two slip gauges is 0.01 mm, then the least count is 0.01 mm.

• It is important to know the least count when using slip gauges for precision measurements.

Defects on PCT at AOI

• Defects on printed circuit boards (PCT) can be identified using Automated Optical Inspection (AOI) systems.

• AOI systems use cameras and image processing algorithms to detect defects such as soldering issues, missing components, or incorrect placements.

• Common defects on PCT at AOI include solder bridges, open circuits, component misalignment, and insufficient soldering.

• AOI helps in improving quality control and reducing manual inspection efforts in electron...read more

There are various types of solder paste used in electronics manufacturing.

• Lead-based solder paste

• Lead-free solder paste

• No-clean solder paste

• Water-soluble solder paste

• Low-temperature solder paste

• High-temperature solder paste

Nozzles are devices used to control the flow and direction of a fluid or gas.

• There are various types of nozzles used in different industries and applications.

• Some common types of nozzles include spray nozzles, fuel nozzles, water nozzles, and air nozzles.

• Spray nozzles are used in industries like agriculture, automotive, and manufacturing for applications such as coating, cleaning, and cooling.

• Fuel nozzles are used in gas stations and aircraft refueling systems to dispense fue...read more

Yes, Agile is a project management methodology that emphasizes iterative development and collaboration.

• Agile is a project management methodology that focuses on iterative development, collaboration, and flexibility.

• It involves breaking down projects into smaller tasks and completing them in short iterations called sprints.

• Agile promotes frequent communication and feedback among team members to adapt to changing requirements.

• Common Agile frameworks include Scrum, Kanban, and E...read more

CAN protocol is a communication protocol used in automotive and industrial applications for high-speed data transmission.

• CAN stands for Controller Area Network

• It is a message-based protocol used for communication between electronic control units (ECUs) in vehicles

• CAN allows multiple ECUs to communicate with each other without a host computer

• It uses a two-wire bus (CAN-High and CAN-Low) for communication

• CAN messages consist of an identifier, data, and a checksum for error dete...read more