Eaton India Innovation Center Lead Engineer Interview Questions and Answers

Various building codes are used depending on the project location and type, such as International Building Code (IBC), National Electrical Code (NEC), and American Society of Mechanical Engineers (ASME) standards.

• International Building Code (IBC) for structural design and construction

• National Electrical Code (NEC) for electrical systems

• American Society of Mechanical Engineers (ASME) standards for mechanical systems

• Loca...read more

Temperature instruments include thermocouples, resistance temperature detectors (RTDs), and thermistors.

• Thermocouples are made of two different metals and work based on the principle of the Seebeck effect.

• RTDs are made of pure metals like platinum and operate on the principle of the change in electrical resistance with temperature.

• Thermistors are made of semiconductor materials and their resistance changes with tempera...read more

Flow meters measure the flow rate of fluids or gases. There are various types with different working principles.

• Differential Pressure Flow Meters: Measure flow by creating a pressure drop across an obstruction in the flow path (e.g., Orifice Plate, Venturi Tube). Advantages: Simple design, low cost. Disadvantages: Pressure loss, limited turndown ratio.

• Positive Displacement Flow Meters: Measure flow by dividing the flui...read more

Control valve and shutoff valve datasheet key points and their meanings.

• Control valve datasheet key points: flow capacity, pressure drop, valve type, actuator type, material, size, Cv value, rangeability.

• Shutoff valve datasheet key points: valve type, material, size, pressure rating, leakage class, end connections.

• Control valve datasheet key points meaning: Flow capacity - maximum flow rate through the valve, Pressure ...read more

An orifice meter is a device used to measure the flow rate of a fluid through a pipe by measuring the pressure drop across a constriction in the pipe.

• It consists of a flat plate with a hole in the center, placed perpendicular to the flow of fluid.

• The pressure drop across the orifice is proportional to the square of the flow rate.

• It is commonly used in industries such as oil and gas, chemical, and water treatment.

• Orific...read more

Control valve sizing is done based on the process requirements and the characteristics of the fluid being controlled.

• Determine the required flow rate and pressure drop

• Select the appropriate valve type and style

• Calculate the valve size based on the flow coefficient (Cv) and the valve authority

• Consider factors such as noise, cavitation, and erosion

• Verify the selected valve can handle the process conditions and fluid prop