Innovassynth Technologies Mechanical Maintenance Engineer Interview Questions and Answers

I left my last job to seek new challenges and opportunities for professional growth in a dynamic environment.

• I was looking for a role that offered more responsibility and the chance to lead projects.

• The company was undergoing restructuring, which limited growth opportunities.

• I wanted to work in an industry that aligns more closely with my career goals and interests.

• I had the opportunity to join a company that focuses o...read more

I have handled various equipment including pumps, compressors, turbines, and conveyors.

• Pumps: I have experience in maintaining and troubleshooting centrifugal pumps used in industrial processes.

• Compressors: I have worked with reciprocating and rotary compressors used for air and gas compression.

• Turbines: I have dealt with steam turbines used in power generation and gas turbines used in various applications.

• Conveyors: I...read more

The permissible vacuum drop for reactor vacuum testing depends on various factors such as the type of reactor and its design specifications.

• The permissible vacuum drop can vary depending on the type of reactor being tested.

• For some reactors, a vacuum drop of 5-10% may be considered acceptable.

• In other cases, a vacuum drop of less than 2% may be required.

• The specific permissible vacuum drop should be determined based on...read more

To check for pump alignment, use laser alignment tools and follow a step-by-step process.

• Use laser alignment tools to measure and correct misalignment

• Start by checking the pump and motor shafts for parallelism and angularity

• Measure the offset and angular misalignment using the laser alignment tool

• Adjust the pump and motor positions to achieve proper alignment

• Recheck the alignment after adjustments and make necessary co...read more

The temperature of cooling tower water varies depending on the specific system and operating conditions.

• The temperature of cooling tower water is typically maintained within a specific range to ensure efficient cooling.

• Factors such as ambient temperature, heat load, and water flow rate can influence the cooling tower water temperature.

• Cooling tower water temperature can be measured using temperature sensors or thermome...read more

The unit of pressure is the pascal (Pa).

• The pascal is defined as one newton per square meter (N/m²).

• Other common units of pressure include pounds per square inch (psi) and atmospheres (atm).

• Pressure can also be measured in millimeters of mercury (mmHg) or torr.

• In engineering, pressure is often expressed in kilopascals (kPa) or megapascals (MPa).

pH range refers to the scale that measures the acidity or alkalinity of a substance.

• pH range is a scale from 0 to 14.

• A pH value of 7 is considered neutral.

• Values below 7 indicate acidity, with lower values being more acidic.

• Values above 7 indicate alkalinity, with higher values being more alkaline.

• For example, lemon juice has a pH range of 2-3, making it highly acidic.

• Baking soda has a pH range of 8-9, making it slight...read more

I have handled various equipments such as pumps, compressors, valves, motors, and gearboxes in my role as a Mechanical Maintenance Engineer.

• Pumps

• Compressors

• Valves

• Motors

• Gearboxes

The temperature of cooling tower water can vary depending on the specific system and operating conditions.

• Cooling tower water temperature typically ranges from 70-85 degrees Fahrenheit.

• The temperature may be controlled by adjusting the flow rate of water through the tower or by adding chemicals to the water.

• Monitoring and maintaining the proper water temperature is important for the efficiency and effectiveness of the ...read more

The pH scale ranges from 0 to 14, with 7 being neutral, below 7 acidic, and above 7 alkaline.

• pH range is from 0 to 14

• 7 is considered neutral

• Below 7 is acidic

• Above 7 is alkaline

• Examples: Lemon juice has a pH of around 2, pure water has a pH of 7, and baking soda has a pH of around 9

Standard atmospheric pressure is approximately 101.3 kilopascals or 14.7 pounds per square inch.

• Standard atmospheric pressure is 101.3 kPa or 14.7 psi

• At sea level, the average atmospheric pressure is 101.3 kPa or 14.7 psi

• Pressure decreases with altitude, so atmospheric pressure is lower at higher elevations

Vacuum drop should be minimal, typically less than 2 inches of mercury.

• Vacuum drop should be monitored regularly to ensure efficient operation.

• Excessive vacuum drop can indicate leaks or issues with the system.

• Typically, a vacuum drop of less than 2 inches of mercury is considered permissible.

• Consult manufacturer guidelines for specific acceptable vacuum drop limits.

Brine is a solution of salt in water, commonly used for preserving food and de-icing roads.

• Brine is composed of water and salt

• It is commonly used for pickling vegetables and meats

• Brine is also used for de-icing roads in cold climates

Boiler typically uses demineralized or deionized water to prevent scale buildup and corrosion.

• Demineralized water

• Deionized water

• Reverse osmosis water

• Distilled water

Alum and chlorine are used in water treatment to remove impurities and kill harmful bacteria.

• Alum is used to coagulate impurities in water, making them easier to remove through filtration.

• Chlorine is used as a disinfectant to kill harmful bacteria and pathogens in water.

• Alum and chlorine together help in making water safe for consumption by removing impurities and killing bacteria.

• Alum can also help in reducing the tur...read more

Types of impellers include open, semi-open, closed, and shrouded impellers.

• Open impeller: consists of blades attached to a central hub with no cover, allowing for easy flow of fluid.

• Semi-open impeller: has blades attached to a central hub with one side open, providing higher efficiency compared to open impellers.

• Closed impeller: features blades attached to a central hub with both sides covered, offering higher efficien...read more