70+ Oprating Engineer Interview Questions and Answers

Answers to questions related to operating engineer role

• Wafers are processed through a series of steps including cleaning, deposition, lithography, etching, and inspection

• Tool calibration involves adjusting and aligning the equipment to ensure accurate and precise measurements

• Golden standard is a reference recipe used to achieve desired results in plasma tool processing

• Troubleshooting PNR involves identifying potential issues, checking for errors, and adjusting parameters if n...read more

Two stroke engines complete a power cycle in two strokes of the piston, while four stroke engines complete it in four strokes.

• Two stroke engines have a simpler design and are lighter than four stroke engines.

• Two stroke engines have a higher power-to-weight ratio than four stroke engines.

• Four stroke engines are more fuel efficient and have a longer lifespan than two stroke engines.

• Examples of two stroke engines include chainsaws, dirt bikes, and jet skis, while examples of fou...read more

Siemens systems commonly use TIA Portal for PLC programming, WinCC for HMI, and Sinumerik for CNC.

• TIA Portal is used for programming PLCs in Siemens systems

• WinCC is the HMI software used in Siemens systems

• Sinumerik is the CNC software used in Siemens systems

Effective product planning involves defining objectives, controlling resources, and ensuring quality throughout the process.

• Define clear objectives: Establish what the product aims to achieve, e.g., increasing efficiency in operations.

• Resource allocation: Determine the necessary resources, such as manpower and machinery, to meet production goals.

• Quality control measures: Implement checks at various stages to ensure the product meets required standards, e.g., regular equipment...read more

Petrol engine and diesel engine are two types of internal combustion engines that differ in their fuel ignition process.

• Petrol engines use spark plugs to ignite the fuel-air mixture, while diesel engines use compression to ignite the fuel

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

• Examples of petrol engines include those found in cars, motorcycles, and small aircraft, while diesel engines are comm...read more

I would prefer to travel by train if available for a more comfortable and efficient journey to the office.

• I would choose to travel by train if it is available as it is usually faster and more comfortable than a bus.

• Taking the train can also be more reliable in terms of arrival time compared to buses which may be affected by traffic.

• Trains often have amenities such as restrooms and food services which can make the journey more convenient.

• If the train is not available or the sc...read more

Haan, main 8 ghante tak continuous kaam kar sakta hoon, kyunki mujhe apne kaam se pyaar hai aur main focused rehta hoon.

• Mujhe apne kaam mein maza aata hai, jaise ki machinery operate karna, jo mujhe engaged rakhta hai.

• Main time management mein achha hoon, isliye main breaks le kar apne aap ko refresh kar leta hoon.

• Maine pehle bhi 8 ghante se zyada kaam kiya hai, jaise ki construction projects par, jahan continuous focus zaroori hota hai.

• Mujhe physical stamina hai, jo mujhe la...read more

CVT stands for Continuously Variable Transmission. CB testing procedures involve measuring the performance of circuit breakers.

• CVT is a type of transmission that allows for seamless gear shifting

• To shutdown a line, the power source must be disconnected and all equipment turned off

• CB testing procedures involve measuring the insulation resistance, contact resistance, and timing of circuit breakers

• CB testing values vary depending on the specific breaker being tested

• Tan delta tes...read more

Types of mechanical industrial belts include V-belts, timing belts, flat belts, and ribbed belts.

• V-belts: commonly used for power transmission in industrial machinery

• Timing belts: used in engines to synchronize the rotation of the crankshaft and camshaft

• Flat belts: used for conveying materials in industrial applications

• Ribbed belts: have longitudinal ribs on the inner side for better grip and reduced slippage

The least count of Main Scale is the smallest measurement that can be read directly from the scale.

• The least count is determined by the smallest division on the main scale.

• It is important for accurate measurements and precision in operating machinery.

• For example, if the main scale has divisions of 1 mm, the least count would be 1 mm.

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 taking measurements to ensure accuracy.

Shock absorbers are devices that help to absorb and dampen shocks and vibrations.

• They are commonly used in vehicles to improve ride comfort and handling

• They work by converting kinetic energy into heat energy

• They consist of a piston and cylinder filled with hydraulic fluid

• The fluid is forced through small holes or valves to slow down the movement of the piston

• There are different types of shock absorbers, including twin-tube, monotube, and coilover

• Regular maintenance and replac...read more

Vibration is the back and forth movement of an object. It can be reduced by balancing, isolating, or damping.

• Balancing rotating equipment to reduce vibration

• Isolating vibrating equipment from surrounding structures

• Using damping materials to absorb vibration energy

There are 2.54 centimetres in one inch.

• 1 inch is equal to 2.54 centimetres

• To convert inches to centimetres, multiply the number of inches by 2.54

• For example, 5 inches is equal to 5 x 2.54 = 12.7 centimetres

I am passionate about operating engineering due to my interest in machinery and desire to contribute to impactful projects.

• I have a strong background in mechanical systems, which aligns with the requirements of this role.

• I am excited about the opportunity to work on large-scale projects, such as infrastructure development.

• I appreciate the teamwork involved in operating engineering, as collaboration leads to innovative solutions.

• I am committed to safety and efficiency, ensurin...read more

I am passionate about operating engineering, bringing skills and dedication to ensure efficient operations and safety.

• I have a strong background in machinery operation, ensuring optimal performance.

• My problem-solving skills help in quickly addressing operational issues.

• I prioritize safety and compliance, having completed relevant training.

• I am a team player, collaborating effectively with colleagues to achieve goals.

ACC and water condenser are both used in cooling systems, but ACC uses air as the cooling medium while water condenser uses water.

• ACC (Air Cooled Condenser) uses air as the cooling medium to condense the refrigerant vapor into liquid form.

• Water condenser uses water as the cooling medium to remove heat from the refrigerant.

• ACC is commonly used in air conditioning systems for buildings and vehicles.

• Water condensers are often used in industrial processes and power plants.

• ACC is ...read more

Welding is a process of joining two materials together by melting them and allowing them to cool, creating a strong bond.

• There are several types of welding processes including MIG (Metal Inert Gas), TIG (Tungsten Inert Gas), Stick, and Flux-Cored Arc Welding.

• Each type of welding process has its own advantages and is used for different applications.

• Welding can be done using different heat sources such as gas flames, electric arcs, lasers, or ultrasound.

• Common materials welded ...read more

A shock absorber is a mechanical or hydraulic device designed to absorb and dampen shock impulses.

• Shock absorbers are commonly used in vehicles to reduce the effects of bumps and vibrations on the suspension system.

• They work by converting kinetic energy into heat, which is then dissipated.

• Examples of shock absorber brands include Bilstein, Monroe, and KYB.

My final project in college involved designing and implementing a new system for optimizing operations in a manufacturing plant.

• Researched current operations and identified areas for improvement

• Designed a new system using software and automation technology

• Implemented the system in a pilot program at the manufacturing plant

• Monitored and evaluated the system's performance to measure its impact on operations

• Presented findings and recommendations to faculty and industry professio...read more

Servo motors and induction motors operate differently in terms of control and speed regulation.

• Servo motors are controlled by a feedback mechanism to achieve precise position control, while induction motors rely on the frequency of the power supply for speed control.

• Servo motors have higher accuracy and faster response times compared to induction motors.

• Induction motors are more commonly used in high-power applications like industrial machinery, while servo motors are used in...read more

The first law of thermodynamics states that energy cannot be created or destroyed, only transformed or transferred.

• Energy conservation: Total energy in a closed system remains constant.

• Heat transfer: Energy can be transferred as heat or work.

• Example: When burning fuel, chemical energy converts to thermal energy.

• Example: In a closed system, if gas expands, it does work on the surroundings.

Motors, generators, and transformers are electrical devices used for power conversion and transmission.

• Motors convert electrical energy into mechanical energy to produce motion.

• Generators convert mechanical energy into electrical energy.

• Transformers are used to transfer electrical energy from one circuit to another through electromagnetic induction.

• Transformers can step up or step down voltage levels.

• Examples of motors include electric fans, washing machines, and electric car...read more

Abnormality condition refers to any deviation from the normal operating state or condition.

• Abnormality conditions can include equipment malfunctions, safety hazards, or unexpected events.

• Examples of abnormality conditions in operating engineering may include power outages, equipment breakdowns, or safety violations.

• It is important for operating engineers to quickly identify and address abnormality conditions to ensure the safety and efficiency of operations.

HR stands for Human Resource, which refers to the management of an organization's workforce.

• HR involves recruiting, hiring, training, and managing employees.

• It also includes developing and implementing policies and procedures related to employee benefits, compensation, and performance evaluation.

• HR plays a crucial role in ensuring that an organization's employees are productive, satisfied, and motivated.

• Examples of HR functions include conducting job interviews, administering...read more

The technical department is responsible for overseeing and managing the technical aspects of a company or organization.

• Responsible for maintenance and repair of equipment and machinery

• Developing and implementing technical procedures and protocols

• Providing technical support to other departments

• Ensuring compliance with safety regulations and standards

Bending machines can be classified as manual, semi-automatic, or CNC based on their operation.

• Manual bending machines are operated by hand and require physical effort from the operator.

• Semi-automatic bending machines have some automated features but still require manual input for operation.

• CNC bending machines are fully automated and controlled by computer programs for precise bending.

• Examples: Manual - hand brake, Semi-automatic - hydraulic press brake, CNC - CNC press brake