Find Interview Questions for Top Companies
Ques:- Difference between 2 wire 3 wire 4 wire rtds which one is accurate?
Right Answer:
2-wire RTDs are less accurate due to lead resistance affecting measurements. 3-wire RTDs improve accuracy by compensating for one lead's resistance. 4-wire RTDs provide the highest accuracy by eliminating lead resistance entirely, making them the most precise option.
Ques:- GD&T and Their use in drawings
Right Answer:
GD&T, or Geometric Dimensioning and Tolerancing, is a system used in engineering drawings to define the allowable variation in the form, orientation, location, and size of a part. It uses symbols and annotations to convey precise specifications, ensuring that parts fit and function correctly in assembly, regardless of manufacturing processes.
Ques:- WHAT IS MY EXPECTATION ABOUT THE JOB?
Asked In :-
Right Answer:
My expectation about the job is to contribute my skills and knowledge to improve plant operations, collaborate with the team to solve engineering challenges, and grow professionally while ensuring safety and efficiency in all processes.
Ques:- SENSORS, TEMP CONTROLLER, PID’S, SSR’S, ETC
Asked In :- ramco cements ltd,
Right Answer:
Sensors detect temperature changes, temperature controllers manage the desired temperature, PID (Proportional-Integral-Derivative) controllers adjust the output based on the error between the setpoint and the measured temperature, and SSRs (Solid State Relays) switch the heating elements on or off based on the controller's output.
Ques:- COTTON MOISTURE
Asked In :- HEG (India),
Right Answer:
Cotton moisture refers to the amount of water content present in cotton fibers, typically expressed as a percentage. It is crucial for determining the quality, weight, and storage conditions of cotton, as excessive moisture can lead to mold growth and degradation of the fibers.
Ques:- DRIVES & PLC CONTROL
Asked In :-
Right Answer:
Drives are devices that control the speed and torque of motors, while PLC (Programmable Logic Controller) control refers to the use of programmable systems to automate machinery and processes. Together, they enable precise control and automation in industrial applications.
Ques:- Your fab sub, project work during education?
Right Answer:
During my education, I worked on a project focused on optimizing the manufacturing process in a semiconductor fabrication facility. This involved analyzing workflow efficiency, implementing lean principles, and using simulation software to model production scenarios.
Ques:- How to plan the production with minimum break down?
Asked In :- sacmi verona spa,
Right Answer:
To plan production with minimum breakdowns, implement regular maintenance schedules, use predictive maintenance techniques, train staff on equipment operation, monitor equipment performance, maintain proper inventory levels for spare parts, and establish clear communication channels for reporting issues.
Ques:- How to maintain the plants and about the planing?
Right Answer:
To maintain plants, regularly inspect equipment, perform preventive maintenance, ensure proper training for staff, and monitor performance metrics. For planning, develop a maintenance schedule, prioritize tasks based on criticality, allocate resources effectively, and continuously assess and adjust plans based on operational needs and feedback.
Ques:- Types of Pumps, Valves?
Asked In :-
Right Answer:
**Types of Pumps:**
1. Centrifugal Pumps
2. Positive Displacement Pumps
- Gear Pumps
- Diaphragm Pumps
- Piston Pumps

**Types of Valves:**
1. Gate Valves
2. Globe Valves
3. Ball Valves
4. Butterfly Valves
5. Check Valves
6. Pressure Relief Valves
Ques:- What is Ton of Refrigeration ?
Right Answer:
A Ton of Refrigeration is a unit of measurement that represents the cooling capacity of a refrigeration system. It is defined as the amount of heat required to melt one ton (2,000 pounds) of ice in 24 hours, which is equivalent to 12,000 British Thermal Units (BTUs) per hour.
Ques:- Utilities Sizing Like How Much Steam, Chilled Water, RT Water Required?
Right Answer:
To determine utilities sizing for steam, chilled water, and RT (reclaimed treated) water, you need to conduct a detailed analysis based on the following factors:

1. **Steam**: Calculate the total heat load required for processes, considering equipment specifications and operational hours. Use the formula:
[
text{Steam Required (lbs/hr)} = frac{text{Total Heat Load (BTU/hr)}}{text{Enthalpy of Steam (BTU/lb)}}
]

2. **Chilled Water**: Assess the cooling load by evaluating the heat gain from equipment, lighting, and occupancy. Use the formula:
[
text{Chilled Water Required (GPM)} = frac{text{Cooling Load (BTU/hr)}}{500 times Delta T}
]
where (Delta T) is the temperature difference (in °F) across the chiller.

3. **RT Water**
Ques:- What is Molarity? Normality? Molality?
Asked In :- wabco,
Right Answer:
Molarity is the number of moles of solute per liter of solution (mol/L). Normality is the number of equivalents of solute per liter of solution (eq/L). Molality is the number of moles of solute per kilogram of solvent (mol/kg).
Ques:- What is the diatom column if we double the feed flow rate ?
Asked In :-
Right Answer:
If you double the feed flow rate, the diatom column will require a larger surface area or a longer column to maintain effective filtration and separation, as the increased flow can lead to reduced contact time and potential clogging.
Ques:- What is the atmospheric pressure at your location ?
Right Answer:
The atmospheric pressure at sea level is typically around 1013.25 hPa (hectopascals) or 1 atm (atmosphere). However, it can vary based on altitude and weather conditions. Please check a local weather source for the exact pressure at your specific location.
Ques:- 2. What are different types of heat exchangers?
Asked In :- transalta,
Right Answer:
The different types of heat exchangers include:

1. Shell and Tube Heat Exchanger
2. Plate Heat Exchanger
3. Air Cooled Heat Exchanger
4. Double Pipe Heat Exchanger
5. Fin Fan Heat Exchanger
6. Spiral Heat Exchanger
7. Plate and Frame Heat Exchanger
8. Compact Heat Exchanger


A Plant Engineer is a multifaceted professional responsible for the operational integrity and efficiency of a manufacturing plant or industrial facility. This role is a critical intersection of various engineering disciplines, including mechanical, electrical, and civil engineering, requiring a broad skill set to manage the complex systems that keep a plant running. The primary goal of a Plant Engineer is to ensure that all equipment, machinery, and utilities operate safely, reliably, and at peak performance to meet production targets while minimizing downtime and costs.

The responsibilities of a Plant Engineer are extensive and varied. They are often involved in the initial design and layout of new facilities or the expansion of existing ones, selecting and installing new equipment, and commissioning systems. A significant portion of their work involves asset management and maintenance. This includes developing and implementing preventative maintenance schedules, overseeing corrective repairs, and conducting root cause analysis for equipment failures. They are the first line of defense against production disruptions, making quick and informed decisions to troubleshoot issues and restore operations.

Beyond maintenance, the Plant Engineer is also a key driver of continuous improvement and operational excellence. They work to identify opportunities for process optimization, energy efficiency, and cost reduction. This could involve upgrading outdated machinery, implementing new technologies to improve automation, or redesigning workflows to enhance safety and productivity. They must be adept at project management, overseeing budgets, timelines, and contractors for various projects. Furthermore, safety and environmental compliance are paramount. The Plant Engineer is responsible for ensuring that all plant operations meet strict industry standards, government regulations, and internal company policies, protecting both the workforce and the environment. This demanding role requires strong analytical skills, a practical understanding of engineering principles, and excellent communication abilities to collaborate effectively with production teams, management, and vendors.

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