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A centrifugal pump is a mechanical device used to transport fluids by converting rotational kinetic energy into hydrodynamic energy.
Centrifugal pumps are commonly used in various industries, including oil and gas, water treatment, and HVAC systems.
They work by using an impeller to rotate and create a centrifugal force, which pushes the fluid towards the pump outlet.
The fluid enters the pump through the suction inlet an...
There are several types of valves used in mechanical systems.
Gate valve: used to control the flow of fluid by lifting or lowering a gate
Ball valve: uses a ball to control the flow of fluid
Butterfly valve: uses a disc to control the flow of fluid
Check valve: allows fluid to flow in one direction only
Globe valve: controls flow by raising or lowering a plug
Needle valve: uses a long, tapered needle to control flow
Diaphragm...
A ball valve is a type of valve that uses a ball-shaped disc to control the flow of fluid through a pipe.
Ball valves are commonly used in industrial applications for their durability and reliability.
They have a simple design, consisting of a ball with a hole in the middle that can be rotated to control the flow of fluid.
Ball valves can be either full port or reduced port, depending on the size of the ball and the hole.
...
A shell and tube heat exchanger is a device used to transfer heat between two fluids.
Consists of a shell (outer vessel) and tubes (inner vessels)
One fluid flows through the tubes while the other flows around the tubes in the shell
Heat is transferred from one fluid to the other through the tube walls
Commonly used in industries such as power generation, chemical processing, and HVAC
Example: Cooling water in a power plant
There are several types of heat exchangers, including shell and tube, plate and frame, and finned tube.
Shell and tube heat exchangers are the most common type and consist of a shell with tubes inside.
Plate and frame heat exchangers use thin plates to transfer heat between fluids.
Finned tube heat exchangers have tubes with fins attached to increase surface area for heat transfer.
Other types include spiral, double pipe, ...
PPE stands for Personal Protective Equipment.
PPE is equipment worn to minimize exposure to hazards that may cause serious workplace injuries or illnesses.
Examples of PPE include safety glasses, gloves, hard hats, respirators, and safety shoes.
PPE should be selected based on the specific hazards present in the workplace.
Employers are responsible for providing PPE to their employees and ensuring that it is properly maint...
An axial flow pump is a type of pump that uses an impeller to create fluid flow parallel to the pump shaft.
Axial flow pumps are commonly used in applications where large volumes of fluid need to be moved at low to medium pressures.
They are often used in irrigation systems, drainage systems, and cooling systems.
The impeller of an axial flow pump has blades that resemble a propeller, which helps in generating the axial f...
A check valve is a mechanical device that allows fluid to flow in one direction only.
Check valves are commonly used in plumbing systems to prevent backflow of water.
They are also used in hydraulic systems to prevent reverse flow of fluid.
Check valves can be classified into different types such as swing check valves, lift check valves, and ball check valves.
These valves work by using a disc or a ball that opens and clos...
Positive displacement pump is a type of pump that moves fluid by trapping a fixed amount of it and then forcing it into the discharge pipe.
Positive displacement pumps operate by trapping a specific volume of fluid and then forcing it into the discharge pipe.
These pumps are capable of generating high pressures and are used in various industries such as oil and gas, chemical, and food processing.
Examples of positive disp...
A globe valve is a type of valve used to regulate or stop the flow of fluid in a pipeline.
It has a spherical body with an internal baffle that directs the flow of fluid.
The valve can be opened or closed by rotating the stem.
It provides a tight seal when closed, preventing leakage.
Globe valves are commonly used in applications where throttling or regulating flow is required.
They are often found in water systems, steam s
PPE stands for Personal Protective Equipment. It refers to protective clothing, helmets, goggles, or other equipment designed to protect the wearer's body from injury or infection.
PPE is used in various industries to protect workers from hazards.
Examples of PPE include safety glasses, gloves, hard hats, respirators, and earplugs.
PPE should be selected based on the specific hazards present in the workplace.
Proper traini...
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I appeared for an interview before Nov 2023.
One of my biggest achievements was successfully leading a team to complete a complex project ahead of schedule and under budget.
Led a team to complete a complex project ahead of schedule
Managed resources effectively to stay under budget
Received recognition for successful project completion
Refrigeration cycle is a process in which a refrigerant absorbs heat from a low-temperature space and rejects it in a high-temperature space.
The refrigeration cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.
The refrigerant starts as a low-pressure gas in the evaporator where it absorbs heat from the space being cooled.
The compressor then compresses the refrigerant into a h...
Four stroke cycle engine works by completing four distinct processes - intake, compression, power, and exhaust strokes.
Intake stroke: Air-fuel mixture is drawn into the cylinder as the piston moves downward.
Compression stroke: The intake valve closes and the piston compresses the mixture, preparing it for ignition.
Power stroke: The spark plug ignites the compressed mixture, causing an explosion that drives the piston d...
posted on 5 Jan 2023
I appeared for an interview in Dec 2022.
posted on 5 Apr 2024
Different types of pumps include centrifugal, reciprocating, and rotary pumps. Pump sealing systems can include mechanical seals, packing seals, and magnetic drive seals. Pump API plans are standardized plans for pump maintenance and troubleshooting.
Types of pumps: centrifugal, reciprocating, rotary
Pump sealing systems: mechanical seals, packing seals, magnetic drive seals
Pump API plans: standardized plans for maintena
Positive pumps are used to move fluids by creating a pressure difference.
Positive displacement pumps
Centrifugal pumps
Diaphragm pumps
Gear pumps
Piston pumps
Peristaltic pumps
Rotary pumps
Screw pumps
Vane pumps
A centrifugal pump is a mechanical device that uses centrifugal force to transport fluids.
Centrifugal pumps are commonly used in various industries for fluid transportation.
They work by converting rotational energy from a motor into kinetic energy in the fluid.
The fluid enters the pump through the inlet and is accelerated by the impeller.
The impeller's rotation creates centrifugal force, pushing the fluid towards the p...
The jockey pump is typically located in the fire pump room or near the main fire pump.
The jockey pump is a small pump used to maintain pressure in a fire protection system.
It is usually installed in conjunction with the main fire pump.
The jockey pump helps prevent the fire pump from starting and stopping frequently by maintaining a constant pressure in the system.
It is commonly found in the fire pump room or in close p...
Fire engines are used in various locations to respond to and extinguish fires.
Fire engines are used in cities and towns to respond to structural fires in buildings.
They are also used in rural areas to combat wildfires.
Fire engines are deployed at airports to handle aircraft fires and emergencies.
They are used in industrial areas to respond to fires in factories and warehouses.
Fire engines are even used on ships and boa
A motor operator valve is a type of valve that is operated by an electric motor.
Motor operator valves are commonly used in industrial applications.
They are designed to control the flow of fluids or gases.
Motor operator valves can be used in various systems, such as pipelines, power plants, and manufacturing processes.
These valves are typically controlled remotely, allowing for automated operation.
Examples of motor oper...
I applied via Walk-in and was interviewed before Jan 2024. There was 1 interview round.
Conveyors are used in materials handling to efficiently transport goods or materials from one place to another.
Conveyors help in automating the transportation process, increasing efficiency and reducing manual labor.
They can handle a wide range of materials, from small parts to heavy items.
Conveyors can be customized to fit specific needs, such as incline or decline conveyors for elevation changes.
Examples of conveyors...
Preventive maintenance is the practice of regularly inspecting, servicing, and replacing parts to prevent equipment failure.
Regularly scheduled inspections and maintenance tasks are performed to prevent breakdowns
Replacement of worn out parts before they fail to avoid costly repairs
Helps in increasing the lifespan of equipment and reducing downtime
Examples include changing oil in a car engine, cleaning air filters in H
Belt length can be calculated using the formula: L = 2C + (πD)
Measure the distance around the pulleys (C)
Measure the diameter of the larger pulley (D)
Use the formula L = 2C + (πD) to calculate the belt length
For example, if C = 30 inches and D = 10 inches, then L = 2(30) + (3.14)(10) = 60 + 31.4 = 91.4 inches
Types of pulleys commonly used in conveyors include drive pulleys, idler pulleys, and snub pulleys.
Drive pulleys are used to transmit power from the motor to the conveyor belt.
Idler pulleys are used to support and guide the conveyor belt.
Snub pulleys are used to increase the angle of wrap around the drive pulley to improve traction.
Other types of pulleys may include bend pulleys, take-up pulleys, and wing pulleys.
Diffe...
Various types of joints used in engineering include welded joints, bolted joints, riveted joints, and adhesive joints.
Welded joints involve fusing two materials together using heat or pressure.
Bolted joints use bolts and nuts to secure two materials together.
Riveted joints involve using rivets to connect two materials.
Adhesive joints use adhesives to bond materials together.
Current is the flow of electric charge in a circuit.
Current is measured in Amperes (A)
It is the rate of flow of electric charge through a conductor
There are two types of current - AC (alternating current) and DC (direct current)
Examples of current include the flow of electrons in a wire when a light bulb is turned on
Voltage is the difference in electric potential between two points in a circuit, measured in volts.
Voltage is the driving force that pushes electric current through a circuit
It is measured in volts (V)
Voltage can be positive or negative, depending on the direction of current flow
Higher voltage means more potential energy available to move electrons
Example: A battery provides voltage to power a light bulb
Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it, and inversely proportional to the resistance of the conductor.
Ohm's law is expressed as V = I * R, where V is voltage, I is current, and R is resistance.
It helps in calculating the current flowing through a circuit when the voltage and resistance are known.
It can also be used to determine the resista...
posted on 15 Nov 2022
I applied via Referral and was interviewed before Nov 2021. There were 4 interview rounds.
Calibration of pressure and temperature involves adjusting instruments to ensure accurate readings.
Calibration involves comparing the readings of a device to a known standard and making adjustments if necessary.
For pressure calibration, a pressure gauge is connected to a reference standard to check accuracy.
Temperature calibration may involve using a temperature bath with known values to adjust a thermometer.
Regular ca...
I applied via Referral and was interviewed before Apr 2022. There were 3 interview rounds.
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