10+ Executive Engineer Mechanical Interview Questions and Answers

SDR of MDPE pipe is a ratio of the outside diameter to the wall thickness, with common types like SDR 11 and SDR 17.

• SDR stands for Standard Dimension Ratio

• It is calculated as the ratio of the outside diameter to the wall thickness of the pipe

• Common types of MDPE pipe include SDR 11, SDR 17, etc.

• Lower SDR values indicate thicker walls and higher pressure ratings

Parameters to check for low vacuum in steam jet ejector include steam flow rate, steam pressure, condenser pressure, and air leakage.

• Check steam flow rate to ensure it is sufficient for proper operation

• Monitor steam pressure to ensure it is at the required level

• Check condenser pressure to ensure it is within the acceptable range

• Inspect for air leakage in the system, which can cause a decrease in vacuum efficiency

Maintenance planning for 24-hour running machinery involves scheduling regular inspections, prioritizing tasks, and ensuring minimal downtime.

• Create a maintenance schedule based on the manufacturer's recommendations and the machinery's usage.

• Prioritize tasks based on their impact on production and safety.

• Ensure minimal downtime by scheduling maintenance during off-peak hours or when the machinery is not in use.

• Regularly inspect machinery for signs of wear and tear, and addres...read more

Parameters for installation of glass line reactor shaft include material compatibility, proper alignment, secure anchoring, and regular maintenance.

• Ensure the shaft material is compatible with the reactor contents to prevent corrosion or contamination.

• Properly align the shaft to prevent excessive wear and tear on the equipment.

• Securely anchor the shaft to prevent vibrations or misalignment during operation.

• Regularly inspect and maintain the shaft to ensure optimal performance...read more

HDPE is high-density polyethylene while MDPE is medium-density polyethylene. HDPE is more rigid and has a higher melting point compared to MDPE.

• HDPE has a higher density and is more rigid than MDPE

• HDPE has a higher melting point compared to MDPE

• MDPE is more flexible and has a lower tensile strength compared to HDPE

Thermal power plants use fossil fuels to generate electricity while hydro power plants use water to generate electricity.

• Thermal power plants burn fossil fuels like coal, oil, or gas to heat water and produce steam which drives turbines to generate electricity.

• Hydro power plants use the kinetic energy of falling water to turn turbines and generate electricity.

• Thermal power plants are more common than hydro power plants because they can be built anywhere and are not dependent ...read more

ALCOVA stands for Analyze, Locate, Control, Organize, Verify, and Act

• ALCOVA is a problem-solving method used in engineering and management

• Analyze - thoroughly examine the problem

• Locate - identify the root cause or source of the problem

• Control - implement measures to prevent recurrence

• Organize - plan and organize the solution

• Verify - confirm the effectiveness of the solution

• Act - take necessary actions based on the analysis

FBD stands for Free Body Diagram, a diagram used to represent the forces acting on a body in a given situation.

• FBD is a visual representation of all the forces acting on a body in a particular situation

• It helps in analyzing and solving problems related to mechanics and dynamics

• The forces are typically represented by arrows pointing in the direction of the force and labeled with their magnitude and direction

• Common forces shown in FBDs include weight, normal force, tension, fri...read more

21CFR refers to Title 21 of the Code of Federal Regulations, which contains regulations related to food and drugs in the United States.

• 21CFR is divided into different parts, with each part focusing on specific aspects such as food labeling, medical devices, pharmaceuticals, etc.

• It is important for companies in the food and drug industry to comply with the regulations outlined in 21CFR to ensure product safety and quality.

• For example, 21CFR Part 11 pertains to electronic recor...read more

Some problems faced in ANF include equipment breakdowns, maintenance challenges, and budget constraints.

• Equipment breakdowns can lead to delays in projects and increased costs for repairs.

• Maintenance challenges can arise due to the complexity of machinery and the need for specialized skills.

• Budget constraints may limit the ability to invest in new equipment or technology upgrades.

• Lack of skilled manpower can also be a problem in ANF.

Centrifugal pumps, reciprocating pumps, diaphragm pumps, etc.

• Worked with centrifugal pumps for water supply systems

• Experience with reciprocating pumps in industrial applications

• Familiar with diaphragm pumps for chemical dosing processes

Building elements refer to the components that make up a building's structure and design.

• Foundation

• Walls

• Roof

• Windows

• Doors

• Floors

• Ceilings

• Stairs

• Columns

• Beams

Designed and implemented a solar-powered water desalination plant for coastal communities.

• Researched and analyzed the feasibility of using solar energy for desalination

• Designed the plant layout and selected appropriate equipment for the process

• Implemented the project with a focus on sustainability and cost-effectiveness

• Conducted tests and monitored the performance of the plant to ensure efficiency

• Provided training to local operators for maintenance and operation

Strength of materials refers to the ability of a material to withstand applied forces without failing.

• Strength of materials is a branch of mechanics that deals with the behavior of solid objects subjected to stresses and strains.

• It involves studying the mechanical properties of materials such as elasticity, plasticity, and fracture.

• Understanding the strength of materials is crucial in designing structures and machines to ensure they can withstand the expected loads.

• Examples i...read more

NAS value is a measure of the cleanliness of hydraulic oil.

• NAS stands for 'National Aerospace Standard'

• It measures the number of particles larger than 5 microns in a given volume of oil

• The lower the NAS value, the cleaner the oil

• NAS value is important for maintaining the performance and longevity of hydraulic systems