10+ Research and Development Interview Questions and Answers for Freshers

Heat and light sensors can be strategically placed in a room with a glass facade to ensure accurate readings.

• Place heat sensors away from direct sunlight to avoid false readings.

• Position light sensors in areas that receive direct sunlight to measure the intensity accurately.

• Consider placing sensors at different heights to capture variations in temperature and light levels.

• Ensure sensors are not obstructed by furniture or other objects that may affect their readings.

• Calibrate ...read more

Various sensors can be used to collect heat and light based data, such as thermocouples, infrared sensors, and photodiodes.

• Thermocouples are commonly used to measure temperature by detecting changes in voltage.

• Infrared sensors can detect heat radiation and are used in applications like temperature monitoring and motion detection.

• Photodiodes are light sensors that convert light energy into electrical current and are used in light intensity measurement and optical communication...read more

Deriving the line equation using end constraints

• To derive the line equation, we need two points on the line

• The end constraints provide the limits for the line

• Using the limits, we can determine the coordinates of the two points

• Once we have the points, we can calculate the slope and y-intercept of the line

• Finally, we can write the line equation in the form y = mx + b

Additives are substances added to coatings to enhance their properties. Major additives used for auto include pigments, fillers, and solvents.

• Additives are used to improve properties such as durability, adhesion, and color.

• Pigments are used to provide color and opacity to coatings.

• Fillers are used to improve the mechanical properties of coatings.

• Solvents are used to dissolve other components and aid in application.

• Coating systems used for auto include primer, basecoat, and cl...read more

The number of subjects in the entire chemical engineering branch varies depending on the university and curriculum.

• The number of subjects can range from 40 to 60 courses.

• Core subjects include thermodynamics, fluid mechanics, chemical reaction engineering, and process control.

• Elective subjects may include polymer engineering, biochemical engineering, and environmental engineering.

• Some universities offer specialized courses like petrochemical engineering or pharmaceutical engin...read more

I have extensive experience in computer vision, including object detection, tracking, and image segmentation.

• Developed a real-time object detection system using YOLOv3

• Implemented image segmentation using U-Net architecture

• Worked on tracking multiple objects in a video stream using Kalman filter

• Used OpenCV and TensorFlow for various computer vision tasks

• Published research papers on computer vision applications in robotics

A best-fit curve is a mathematical function that represents the closest approximation to a set of data points.

• A best-fit curve is used to model the relationship between variables in a dataset.

• It is often used in research and development to analyze and predict trends.

• The curve is determined by minimizing the overall distance between the curve and the data points.

• Different types of curves can be used, such as linear, polynomial, exponential, or logarithmic curves.

• The best-fit c...read more

Molality is the concentration of a solute in a solvent expressed in moles per kilogram, while normality is the concentration of a solute in a solution expressed in equivalents per liter.

• Molality is a measure of the amount of solute dissolved in a solvent, expressed in moles per kilogram of solvent.

• Normality is a measure of the concentration of a solute in a solution, expressed in equivalents per liter of solution.

• Molality is independent of temperature, while normality depends...read more

Yes, I have knowledge of Excel.

• Proficient in using Excel for data analysis and manipulation

• Familiar with functions, formulas, and macros in Excel

• Experience in creating charts, graphs, and pivot tables

• Ability to perform data validation and conditional formatting

• Knowledge of advanced features like VLOOKUP and IF statements

MongoDB is a NoSQL database while the relational model is based on tables and SQL.

• MongoDB is schema-less, allowing flexible and dynamic data structures.

• Relational databases use a fixed schema with predefined tables and columns.

• MongoDB uses a document-based model, storing data in JSON-like documents.

• Relational databases use a tabular model, storing data in rows and columns.

• MongoDB supports horizontal scalability and distributed data storage.

• Relational databases are typically v...read more

To perform better, I focus on setting clear goals, prioritizing tasks, and seeking feedback.

• I set specific and measurable goals to track my progress

• I prioritize tasks based on their importance and urgency

• I seek feedback from colleagues and supervisors to improve my performance

• I continuously learn and develop new skills to enhance my performance

• I maintain a positive attitude and stay motivated to achieve my goals

KCL stands for Kirchhoff's Current Law and KVL stands for Kirchhoff's Voltage Law, both are fundamental laws in electrical engineering.

• KCL states that the total current entering a node is equal to the total current leaving the node.

• KVL states that the sum of voltages around any closed loop in a circuit is equal to zero.

• These laws are used to analyze and solve electrical circuits.

• For example, in a simple circuit with a battery and resistors, KCL can be used to determine the cu...read more

Resistance is the act of opposing or withstanding something.

• Resistance can refer to the opposition to a force or influence.

• It can also refer to the ability of a material to withstand wear, pressure, or damage.

• Examples include electrical resistance in a circuit, resistance to antibiotics in bacteria, and resistance training in fitness.

TTT diagram of mild steel shows the transformation of austenite into different microstructures at various temperatures and times.

• TTT diagram stands for Time-Temperature-Transformation diagram

• It shows the relationship between temperature, time, and the transformation of austenite into different microstructures like pearlite, bainite, and martensite

• For mild steel, the TTT diagram typically shows the formation of pearlite at lower temperatures and bainite at higher temperatures

• T...read more