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posted on 14 Oct 2023
I applied via Referral and was interviewed before Oct 2022. There were 3 interview rounds.
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
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...
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...
posted on 21 Sep 2023
posted on 10 Jan 2024
I applied via Referral and was interviewed before Jan 2023. There were 2 interview rounds.
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...
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...
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...
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...
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
I applied via Walk-in and was interviewed in Jul 2021. There was 1 interview round.
Bearings are used to reduce friction between two moving parts. There are several types of bearings.
Bearings are used to support and reduce friction between two moving parts
They come in different types such as ball bearings, roller bearings, and plain bearings
Ball bearings are used in applications with low load and high speed
Roller bearings are used in applications with high load and low speed
Plain bearings are used in ...
Gearbox is a mechanical device that transmits power from an engine to the wheels by changing the speed and torque of the output shaft.
It provides torque multiplication and speed reduction.
It allows the engine to operate at its most efficient speed.
It enables the vehicle to move at different speeds and climb hills.
It protects the engine and transmission from damage by absorbing shock loads.
Types of gearbox include manua...
The bearing types used in axially split centrifugal pumps are mainly ball bearings and sleeve bearings.
Ball bearings are commonly used in axially split centrifugal pumps due to their high load capacity and low friction.
Sleeve bearings, also known as journal bearings, are used in pumps that operate at lower speeds and lower loads.
Other types of bearings, such as roller bearings, may also be used depending on the specifi
Condition monitoring is the process of monitoring the health and performance of machinery and equipment to detect any potential faults or failures.
It involves the use of various techniques and tools to continuously monitor the condition of machines.
Condition monitoring helps in identifying early signs of deterioration or malfunction, allowing for timely maintenance or repair.
Common techniques used in condition monitori...
I applied via LinkedIn
Production engineer for cnc programming and Drawing knowledge
posted on 23 Jun 2022
Cooling towers are used to remove heat from a building or industrial process by transferring it to the atmosphere.
Cooling towers are used in HVAC systems to cool water that has been heated by air conditioning systems or industrial processes.
They work by evaporating a small portion of the water to remove heat, which lowers the overall temperature of the remaining water.
The cooled water is then circulated back into the s...
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