20+ Project Intern Interview Questions and Answers

Polymorphism in programming refers to the ability of a method to behave differently based on the object it is acting upon.

• Compile time polymorphism is achieved through method overloading, where multiple methods have the same name but different parameters.

• Run time polymorphism is achieved through method overriding, where a subclass provides a specific implementation of a method that is already defined in its superclass.

• Example of compile time polymorphism: function overloading...read more

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

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

• It is determined by the number of divisions on the main scale and the Vernier scale.

• For example, if the main scale has 20 divisions and the Vernier scale has 19 divisions, the least count would be 0.05 mm.

Agile methodologies focus on iterative resource allocation and management for efficient project delivery.

• Agile methodologies involve breaking down projects into smaller tasks called user stories

• Resources are allocated based on priority and availability for each user story

• Regular meetings like daily stand-ups help in tracking resource allocation and adjusting as needed

SCR is a semiconductor device used for controlling high power circuits.

• SCR stands for Silicon Controlled Rectifier.

• It is a four-layer PNPN diode.

• It is used for switching and controlling high power AC and DC circuits.

• It is commonly used in power supplies, motor control, lighting control, and welding equipment.

• It has three terminals: anode, cathode, and gate.

• It can be triggered into conduction by a small current applied to the gate terminal.

• Once triggered, it will remain conduc...read more

I have worked on projects using ROS for autonomous navigation and object manipulation.

• Developed a ROS package for autonomous navigation of a mobile robot

• Implemented object detection and manipulation using ROS and OpenCV

• Integrated sensors like LiDAR and cameras for environment perception

Linear feet is a measure of length while square feet is a measure of area. Conversion depends on the width of the object.

• To convert linear feet to square feet, you need to know the width of the object in feet.

• Multiply the length in feet by the width in feet to get the area in square feet.

• For example, if you have a 10-foot long board that is 1 foot wide, the area would be 10 square feet.

Polymorphism is the ability of an object to take on many forms.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• It enables methods to be overridden in a subclass to provide different implementations.

• Polymorphism enhances code reusability and flexibility.

• Example: A superclass 'Animal' with subclasses 'Dog' and 'Cat' can be treated as 'Animal' objects.

• Example: Method 'draw()' in superclass 'Shape' can be overridden in subclasses '...read more

Yes, I have knowledge of ROS (Robot Operating System).

• I have experience working with ROS in developing robotic applications.

• I am familiar with ROS concepts such as nodes, topics, messages, and services.

• I have used ROS for tasks like robot navigation, manipulation, and perception.

Compressors are mechanical devices that increase the pressure of a gas by reducing its volume.

• Compressors are commonly used in refrigeration and air conditioning systems to compress refrigerant gases.

• They are also used in industrial processes to compress air for pneumatic tools and equipment.

• There are different types of compressors such as reciprocating, rotary, and centrifugal compressors.

• Compressors play a crucial role in various industries including manufacturing, oil and ...read more

I prioritize tasks based on deadlines, importance, and impact on overall project goals.

• I create a to-do list with all tasks and deadlines

• I assess the importance and impact of each task on project goals

• I prioritize tasks based on deadlines, importance, and impact

• I regularly review and adjust priorities as needed

HVAC system is essential for maintaining comfortable indoor temperature and air quality.

• HVAC system regulates temperature, humidity, and air quality in indoor spaces.

• It helps to prevent health issues caused by poor air quality.

• It also helps to protect equipment and materials from damage due to extreme temperatures or humidity.

• Examples of HVAC systems include air conditioners, heaters, and ventilation systems.

Linear feet is a measurement of length in a straight line.

• Linear feet is used to measure the length of a straight line, such as a wall or a fence.

• It is calculated by measuring the length in feet and inches and adding them together.

• For example, a wall that is 8 feet long and 6 inches wide would be 8.5 linear feet.

• Linear feet is often used in construction and woodworking to determine the amount of material needed for a project.

Resonance is the phenomenon where an object vibrates at its natural frequency when exposed to external vibrations.

• Resonance occurs when an object's natural frequency matches the frequency of an external force, causing it to vibrate with increased amplitude.

• Examples include a tuning fork vibrating when struck, a swing being pushed at the right timing to go higher, and glass breaking when exposed to a certain frequency of sound waves.

Abstraction is the process of simplifying complex systems by focusing on the essential details.

• Abstraction involves hiding unnecessary details and exposing only the relevant information.

• It allows us to create models or representations that capture the essential characteristics of a system.

• Abstraction helps in managing complexity and improving understanding and communication.

• Examples of abstraction include using functions or methods to encapsulate a series of operations, using...read more

Different instruments have different working principles depending on their design and purpose.

• Instruments like thermometers work based on the expansion and contraction of materials due to temperature changes.

• Microscopes use lenses to magnify and focus light to produce an enlarged image of a small object.

• Spectrophotometers measure the absorption or transmission of light by a sample to determine its properties.

• Electrocardiographs (ECGs) detect and record the electrical activity...read more

A PID controller is a feedback control mechanism used in engineering to regulate a system's output.

• PID stands for Proportional-Integral-Derivative

• It continuously calculates an error value as the difference between a desired setpoint and a measured process variable

• The controller then adjusts the output to minimize the error

• It is commonly used in industrial control systems, robotics, and automation

• Example: A PID controller can be used to regulate the temperature of a furnace by...read more

The laws of thermodynamics are fundamental principles governing energy and heat transfer in physical systems.

• First Law: Energy cannot be created or destroyed, only transferred or converted.

• Second Law: Entropy in a closed system will always increase over time.

• Third Law: As temperature approaches absolute zero, the entropy of a system approaches a minimum value.

• Examples: A car engine converting fuel into motion follows the first law. A cup of hot coffee cooling down over time f...read more

A blower is a mechanical device used to create a flow of air or gas.

• Blowers work by drawing in air or gas through an inlet and then expelling it through an outlet at a higher pressure or velocity.

• They are commonly used in HVAC systems, industrial processes, and combustion engines.

• Blowers can be powered by electric motors, internal combustion engines, or other sources of mechanical energy.

I am flexible with travelling and willing to travel as per the project requirements.

• I have a valid passport and can obtain necessary visas

• I am comfortable with different modes of transportation

• I am willing to adjust my schedule to accommodate travel

• I have experience travelling for work, such as attending conferences or meetings

• I am open to exploring new places and cultures

Value analysis of a product involves assessing its worth and benefits in relation to its cost.

• Value analysis helps determine if a product provides sufficient value for its price.

• It involves evaluating the product's features, quality, performance, and durability.

• Comparing the product with similar alternatives in the market can provide insights into its value.

• Considering customer feedback and reviews can also contribute to the value analysis.

• Value analysis can help identify are...read more