100+ Production Engineer Interview Questions and Answers for Freshers

The injection time reciprocating screw moves forward, and after injection, the screw moves backward. NRV stands for Non-Return Valve.

• During the injection time, the reciprocating screw moves in the forward direction.

• After injection, the screw moves in the backward direction.

• NRV stands for Non-Return Valve.

Switches are used instead of relays in some domestic applications due to their smaller size, lower cost, and faster response time.

• Switches are smaller in size compared to relays, making them more suitable for compact domestic appliances.

• Switches are generally less expensive than relays, making them a cost-effective choice for domestic applications.

• Switches have a faster response time compared to relays, allowing for quicker operation in domestic appliances.

• Examples of domesti...read more

The electrode used in MIG welding is a consumable wire electrode.

• MIG welding stands for Metal Inert Gas welding.

• The electrode is continuously fed through a welding gun and melts to form the weld.

• The wire electrode is made of the same material as the base metal being welded.

• The shielding gas used in MIG welding protects the weld from atmospheric contamination.

• Common types of wire electrodes include ER70S-6 for mild steel and ER308L for stainless steel.

Explaining the difference between 1st and 3rd angle projection and drawing views on paper.

• 1st angle projection is commonly used in Europe and Asia, while 3rd angle projection is used in North America.

• In 1st angle projection, the object is placed in front of the viewing plane, while in 3rd angle projection, the object is placed behind the viewing plane.

• To draw views on paper, first determine the orientation of the object and the viewing plane, then project the object onto the ...read more

Metals are elements that have high electrical conductivity, luster, and malleability.

• Metals are typically solid at room temperature, except for mercury which is a liquid.

• Common types of metals include iron, copper, aluminum, gold, silver, and zinc.

• Metals can be classified as ferrous or non-ferrous based on their iron content.

• The chemical composition of metals varies depending on the specific element, but they all have a metallic bond.

• Metals are widely used in manufacturing, c...read more

Process Control

• Process control is my favorite subject in chemical engineering.

• I enjoy studying the principles and techniques used to control and optimize chemical processes.

• I find it fascinating how process control systems can improve efficiency, safety, and product quality.

• One example of process control is the use of feedback loops to maintain desired operating conditions in a chemical reactor.

• I also appreciate the importance of process control in industries such as oil refi...read more

To manufacture a product with low loss and good quality, one must focus on optimizing the production process and ensuring quality control measures are in place.

• Conduct a thorough analysis of the production process to identify areas for improvement

• Implement lean manufacturing principles to reduce waste and increase efficiency

• Invest in quality control measures such as regular inspections and testing

• Train employees on proper manufacturing techniques and quality control procedure...read more

Sorry, I cannot answer this question as it lacks context and information.

Vernier caliper is used for precise measurements of length, while multimeter is used for measuring electrical quantities.

• Vernier caliper is used to measure the dimensions of objects with high accuracy.

• It consists of a main scale and a sliding vernier scale, allowing for precise measurements.

• Vernier calipers are commonly used in manufacturing, engineering, and scientific applications.

• For example, they can be used to measure the diameter of a shaft or the thickness of a sheet.

• M...read more

Yes, I know the manufacturing procedure of relays.

• Relays are electromechanical devices used to control the flow of electricity in a circuit.

• The manufacturing procedure involves several steps such as designing, prototyping, testing, and mass production.

• Designing includes selecting the appropriate materials, determining the specifications, and creating the circuit diagram.

• Prototyping involves creating a working model to test the functionality and performance of the relay.

• Testin...read more

The least count of vernier caliper is 0.02 mm and that of micrometer is 0.01 mm.

• Least count of vernier caliper is 0.02 mm

• Least count of micrometer is 0.01 mm

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

• It is important to know the least count for accurate measurements

Yes, epoxy is commonly used in relays for its insulating and adhesive properties.

• Epoxy is a type of resin that can be used as an adhesive or coating.

• In relays, epoxy is often used to encapsulate and protect the internal components.

• It provides insulation and helps to prevent moisture or dust from entering the relay.

• Epoxy can also improve the mechanical strength and stability of the relay.

• For example, epoxy is used in automotive relays to ensure reliable operation in harsh envi...read more

Thermodynamics is the study of energy and its transformations in various forms of matter.

• Thermodynamics is used in the design and optimization of engines, power plants, refrigeration systems, and other devices that involve energy transfer.

• It is also used in the study of chemical reactions and the behavior of materials at high temperatures and pressures.

• Thermodynamics helps in understanding the properties of materials and their phase transitions.

• It is used in the development o...read more

Cutting tools are made of various materials depending on the application.

• High-speed steel (HSS) is commonly used for general-purpose cutting tools.

• Carbide is used for cutting hard materials like steel and titanium.

• Ceramics are used for high-speed cutting of cast iron and other hard materials.

• Diamond is used for cutting non-ferrous materials like glass and ceramics.

• Cobalt steel is used for cutting stainless steel and other high-temperature alloys.

TIG welding uses a tungsten electrode to create a precise and clean weld, while MIG welding uses a consumable wire electrode and shielding gas.

• TIG welding is slower but produces higher quality welds with less spatter and distortion.

• MIG welding is faster and better suited for thicker materials and high-volume production.

• TIG welding requires more skill and experience, while MIG welding is easier to learn and use.

• TIG welding is commonly used for aerospace, automotive, and precis...read more

A relay is an electrically operated switch that uses an electromagnet to mechanically control the switching action.

• Relays are used to control high power circuits with low power signals.

• They can be used to control motors, lights, and other electrical devices.

• Relays have an input coil that generates a magnetic field when current flows through it.

• This magnetic field attracts a movable armature, which closes or opens the switch contacts.

• Relays can have multiple sets of contacts, ...read more

Factors to consider when designing a heat exchanger

• Type of fluid being used

• Flow rate and pressure drop requirements

• Temperature range and heat transfer rate

• Material compatibility and corrosion resistance

• Space constraints and installation considerations

Commonly used sheet-metal assembly processes include welding, riveting, and adhesive bonding.

• Welding: Joining metal parts by melting and fusing them together, commonly used methods include spot welding, TIG welding, and MIG welding.

• Riveting: Joining metal parts using mechanical fasteners called rivets, which are inserted through holes and then deformed to hold the parts together.

• Adhesive bonding: Joining metal parts using specialized adhesives that create a strong bond betwee...read more

Basic guidelines for sheet metal fabrication include material selection, design considerations, and proper tooling and equipment.

• Choose the appropriate material for the desired application, considering factors such as strength, corrosion resistance, and cost.

• Design the sheet metal part with proper dimensions, tolerances, and features to ensure manufacturability and functionality.

• Consider bend radius, hole sizes, and edge treatments to avoid cracking, distortion, or sharp edge...read more

Feed speed refers to the rate at which the cutting tool moves along the workpiece, while cutting speed refers to the speed at which the workpiece rotates or moves relative to the cutting tool.

• Feed speed is measured in units of distance per time, such as inches per minute or millimeters per second.

• Cutting speed is measured in units of surface speed, such as feet per minute or meters per second.

• Feed speed determines how quickly the cutting tool engages with the workpiece.

• Cuttin...read more

The pressure required depends on the height of the liquid column and its density.

• The pressure required is directly proportional to the height of the liquid column.

• The pressure required is also affected by the density of the liquid.

• The pressure can be calculated using the formula P = ρgh, where P is pressure, ρ is density, g is acceleration due to gravity, and h is height of the liquid column.

• The pump should be able to provide a pressure greater than the calculated value to ov...read more

I approach problems by analyzing the root cause, brainstorming solutions, and implementing the best option.

• Identify the root cause of the problem

• Brainstorm potential solutions

• Evaluate and select the best option

• Implement the solution and monitor for effectiveness

• Continuously improve the process to prevent future problems

Relays are used in various real-time applications for controlling electrical circuits.

• Industrial automation: Relays are used to control motors, pumps, and other industrial equipment.

• Power distribution: Relays are used in power grids to control the flow of electricity and protect against overloads.

• Automotive industry: Relays are used in vehicles for controlling headlights, wipers, and other electrical systems.

• Telecommunications: Relays are used in telephone exchanges to route ...read more

Artificial Intelligence (AI) is the simulation of human intelligence processes by machines, especially computer systems.

• AI encompasses machine learning, where algorithms improve through experience.

• Natural language processing allows machines to understand and respond to human language, like chatbots.

• Computer vision enables machines to interpret and make decisions based on visual data, such as facial recognition.

• Robotics combines AI with physical machines to perform tasks auton...read more

Mechanical engineering is a branch of engineering that deals with the design, analysis, and manufacturing of mechanical systems.

• It involves the study of mechanics, thermodynamics, materials science, and structural analysis.

• Mechanical engineers design and develop machines, tools, and equipment for various industries.

• They also work on improving the performance and efficiency of existing mechanical systems.

• Examples of mechanical systems include engines, turbines, robots, and HVA...read more

The future aspects of a Production Engineer include automation, advanced technologies, sustainability, and continuous improvement.

• Automation: The use of robotics and artificial intelligence to streamline production processes and increase efficiency.

• Advanced technologies: Integration of IoT, big data analytics, and machine learning to optimize production systems.

• Sustainability: Implementing eco-friendly practices and renewable energy sources to reduce environmental impact.

• Cont...read more

5S is a methodology used to organize a workplace for efficiency and effectiveness. The 5 C's are key components of 5S: Sort, Set in order, Shine, Standardize, Sustain.

• Sort - separating necessary items from unnecessary items

• Set in order - arranging necessary items in a logical and efficient manner

• Shine - cleaning and maintaining the work area

• Standardize - establishing consistent procedures and practices

• Sustain - ensuring the 5S system is maintained over time

• Example: Sorting th...read more