40+ Mechanical Fitter Interview Questions and Answers

Preventive maintenance involves regular inspections, cleaning, lubrication, and replacement of parts to ensure equipment reliability.

• Create a maintenance schedule based on manufacturer recommendations

• Perform regular inspections to identify any signs of wear or damage

• Clean equipment regularly to remove dirt, dust, and debris

• Lubricate moving parts to reduce friction and prevent excessive wear

• Replace worn or damaged parts before they cause equipment failure

• Keep records of mainte...read more

A bearing is a machine element that reduces friction between moving parts and supports axial and radial loads.

• Bearings are used in various machines and equipment such as automobiles, airplanes, and industrial machinery.

• They work by allowing smooth and controlled motion between two surfaces.

• The main parts of a bearing are the outer ring, inner ring, rolling elements, and cage.

• Types of bearings include ball bearings, roller bearings, and plain bearings.

• Proper lubrication is ess...read more

Pressure builds up in a hydraulic valve due to resistance to flow and force exerted by the pump.

• Hydraulic valves control the flow of fluid in a hydraulic system.

• When the valve is closed, the fluid is blocked and pressure builds up behind the valve.

• The pressure builds up due to resistance to flow and force exerted by the pump.

• When the valve is opened, the fluid flows through the valve and the pressure drops.

• The pressure drop is proportional to the flow rate through the valve.

Mechanical seals are used to prevent leakage of fluids in rotating equipment such as pumps and compressors.

• Mechanical seals are used to prevent leakage of fluids in rotating equipment

• They consist of two main components - a stationary part and a rotating part

• The stationary part is fixed to the pump or compressor housing, while the rotating part is attached to the shaft

• The two parts are held together by a spring and a set of secondary seals

• The primary seal is made of a hard mat...read more

Pay attention to cleanliness, proper disassembly, inspection, and reassembly.

• Ensure cleanliness of the valve and surrounding area.

• Properly disassemble the valve and inspect all components for wear or damage.

• Replace any damaged or worn components with new ones.

• Reassemble the valve carefully, ensuring all components are properly aligned and tightened.

• Test the valve to ensure proper operation before returning it to service.

A mechanical seal is a device that helps prevent leakage in rotating equipment by creating a barrier between two surfaces.

• Mechanical seals are commonly used in pumps, compressors, and other rotating equipment.

• They consist of two main components: a stationary part and a rotating part.

• The stationary part is typically attached to the pump or equipment housing, while the rotating part is attached to the shaft.

• The two parts are designed to fit together tightly, creating a seal tha...read more

Alignment of rotator equipment and pump, motor is crucial for efficient operation and preventing damage.

• Use precision measuring tools like dial indicators and laser alignment systems

• Ensure proper baseplate installation and leveling

• Check for soft foot and correct it if present

• Follow manufacturer's specifications and tolerances

• Perform alignment checks regularly to prevent wear and tear

• Examples: aligning a centrifugal pump with a motor, aligning a gearbox with a compressor

There are various types of files used in mechanical fitting.

• There are hand files, needle files, and machine files.

• Hand files are used for general purpose filing and come in various shapes and sizes.

• Needle files are used for intricate work and have a pointed end.

• Machine files are used with power tools and have teeth that are cut in a specific pattern.

• Other types of files include diamond files, riffler files, and rotary files.

Manufacturing procedure involves a series of steps to produce a product or component.

• Designing the product or component

• Selecting the materials and tools required

• Creating a prototype

• Testing the prototype for quality and functionality

• Making necessary adjustments and improvements

• Mass production of the product or component

• Quality control checks throughout the manufacturing process

Bearings are used to reduce friction between two moving parts. There are different types of bearings for different applications.

• Bearings reduce friction and wear between two moving parts

• They support radial and axial loads

• Types of bearings include ball bearings, roller bearings, and plain bearings

• Ball bearings are used in high-speed applications

• Roller bearings are used in heavy-duty applications

• Plain bearings are used in low-speed and high-load applications

A bearing is a device that supports and reduces friction between moving parts.

• Bearings are used in various mechanical systems to allow smooth rotation or movement.

• There are different types of bearings such as ball bearings, roller bearings, and plain bearings.

• Ball bearings use balls to reduce friction and allow rotational movement.

• Roller bearings use cylindrical rollers to support heavy loads.

• Plain bearings have a sliding surface and are used in applications where low frictio...read more

A spanner is a type of wrench used to provide grip and mechanical advantage in applying torque to turn objects.

• Spanners come in various types and sizes, including open-end spanners, ring spanners, combination spanners, adjustable spanners, and socket spanners.

• Open-end spanners have U-shaped jaws with a flat surface on one or both sides, allowing them to grip two opposite faces of a nut or bolt.

• Ring spanners have a circular opening at one or both ends, providing a secure grip ...read more

A sine bar is a precision measuring tool used to measure angles.

• Consists of a base, a bar, and a moveable block

• Used in conjunction with a dial indicator to measure angles

• Commonly used in machining and metalworking industries

• Accurate to within a few seconds of a degree

• Can be used to set up workpieces at precise angles for machining operations

Ratio is a mathematical term that compares two or more quantities.

• Ratio is expressed in the form of a:b or a/b.

• It is used to compare two or more quantities of the same kind.

• For example, the ratio of boys to girls in a class of 30 students is 2:3.

• Ratio is used in various fields such as finance, engineering, and science.

There are several types of gears used in mechanical systems.

• Spur gears: used to transmit motion between parallel shafts

• Helical gears: similar to spur gears but with angled teeth for smoother operation

• Bevel gears: used to transmit motion between intersecting shafts

• Worm gears: used for high reduction ratios and self-locking capabilities

• Planetary gears: used in gearboxes to achieve different gear ratios

• Rack and pinion gears: convert rotational motion into linear motion

• Internal g...read more

A type of reactor is a device used to contain and control a nuclear chain reaction.

• Reactors are used in nuclear power plants to generate electricity.

• There are different types of reactors, such as pressurized water reactors (PWR) and boiling water reactors (BWR).

• Each type of reactor has its own unique design and operating characteristics.

• Reactors require careful monitoring and maintenance to ensure safe and efficient operation.

A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.

• Bearings are used to support rotating shafts and reduce friction between two moving parts.

• There are several types of bearings such as ball bearings, roller bearings, and plain bearings.

• Ball bearings are the most common type of bearing and are used in applications such as electric motors and automotive wheels.

• Roller bearings are used in heavy-duty...read more

A high rpm bearing is a type of bearing designed to operate at high rotational speeds.

• High rpm bearings are typically used in applications such as turbines, motors, and high-speed machinery.

• These bearings are designed with special materials and lubrication systems to handle the increased heat and friction generated at high speeds.

• They often have precision ball or roller elements and advanced cage designs to minimize friction and maximize efficiency.

• Examples of high rpm bearin...read more

Measuring systems in mechanical engineering are used to accurately measure physical quantities such as length, force, pressure, and temperature.

• Measuring systems can be analog or digital.

• Analog measuring systems use a scale and pointer to indicate the measured value.

• Digital measuring systems use electronic sensors to convert physical quantities into digital signals.

• Common types of measuring systems include micrometers, calipers, pressure gauges, and thermometers.

• Measuring sys...read more

My interest lies in working with mechanical systems, troubleshooting and problem-solving, and continuously learning new technologies and techniques.

• Passion for working with mechanical systems

• Enjoy troubleshooting and problem-solving

• Keen interest in learning new technologies and techniques

• Experience in maintaining and repairing machinery

• Enthusiasm for hands-on work

A gear box is a mechanical device that transmits mechanical power from a prime mover to an output device.

• Types of gear box alignments include parallel alignment, angular alignment, and offset alignment.

• Parallel alignment ensures that the shafts of the gears are parallel to each other.

• Angular alignment ensures that the shafts of the gears intersect at a specific angle.

• Offset alignment involves shifting the centerlines of the shafts to accommodate for misalignment.

A type of component that supports a rotating shaft and reduces friction between moving parts.

• There are several types of bearings, including ball bearings, roller bearings, and plain bearings.

• Ball bearings use balls to reduce friction and support the shaft.

• Roller bearings use cylindrical rollers to support the shaft.

• Plain bearings use a sliding motion to reduce friction and support the shaft.

• Bearings are commonly used in machinery and vehicles to reduce wear and tear on moving...read more

Centrifugal CF and centrifugal pump work by using centrifugal force to move fluid through the pump.

• Centrifugal CF uses centrifugal force to separate particles from a fluid, such as in a centrifuge machine.

• Centrifugal pump uses centrifugal force to move fluid through the pump, increasing the fluid's velocity and pressure.

• Both rely on the principle of using rotating impellers to create centrifugal force.

Different types of drilling include twist drilling, gun drilling, and counterboring.

• Twist drilling is the most common type of drilling, using a twist drill bit to create holes in materials.

• Gun drilling is used for deep and straight holes, often in metal components.

• Counterboring is used to enlarge the opening of a hole to fit a screw head or bolt.

• Other types of drilling include center drilling, reaming, and tapping.

Mechanical work involves assembling, installing, maintaining, and repairing machinery and equipment.

• Assembling components to create machinery

• Installing machinery and equipment in various settings

• Maintaining machinery by performing regular inspections and repairs

• Repairing faulty machinery to ensure proper functioning

• Following blueprints and technical drawings for guidance

• Using hand and power tools to complete tasks efficiently

Heat exchangers are devices used to transfer heat between two or more fluids.

• Shell and tube heat exchanger

• Plate heat exchanger

• Fin tube heat exchanger

• Double pipe heat exchanger

• Spiral heat exchanger

• Air-cooled heat exchanger

The beg house in Samson feeder chain may be causing a problem.

• Check for any blockages or obstructions in the beg house

• Inspect the chain for any signs of wear or damage

• Ensure proper lubrication of the chain to prevent friction and wear

• Consider replacing the chain if necessary

Metal work involves understanding the properties of different metals and how they can be manipulated.

• Metals have different properties such as strength, ductility, and conductivity

• Different metals require different techniques for shaping and joining

• Heat treatment can alter the properties of metals

• Examples of metal work include welding, forging, and machining

Autoliv has production facilities in various locations worldwide.

• Autoliv has production facilities in countries like Sweden, United States, China, Mexico, and more

• They have multiple production sites to cater to global demand

• Some of their production facilities specialize in specific products such as airbags or seatbelts

A vernier caliper typically has two scales - the main scale and the vernier scale.

• A vernier caliper usually has a count of 0 to 150 on the main scale.

• The vernier scale has divisions that allow for more precise measurements.

• The count on the vernier scale can range from 0 to 9, depending on the caliper's accuracy.

• By aligning the zero on the vernier scale with the main scale, measurements can be taken accurately.

Yes, I have 5 years of experience working as a Mechanical Fitter.

• During my 5 years of experience, I have gained expertise in assembling, installing, and maintaining mechanical systems.

• I have worked on various types of machinery, including pumps, compressors, and turbines.

• I am familiar with reading and interpreting technical drawings and schematics.

• I have experience in troubleshooting and repairing mechanical systems.

• I have worked in various industries, including manufacturing...read more

There are various types of gearboxes used in mechanical systems, such as spur, helical, bevel, worm, and planetary gearboxes.

• Spur gearboxes have straight teeth and are commonly used in low-speed applications.

• Helical gearboxes have angled teeth for smoother operation and higher load capacity.

• Bevel gearboxes are used to change the direction of power transmission.

• Worm gearboxes have a screw-like gear and are used for high reduction ratios.

• Planetary gearboxes have multiple gears ...read more

A hydraulic circuit diagram shows the flow of hydraulic fluid in a system.

• Identify components like pumps, valves, cylinders, and reservoirs

• Draw lines to show the flow of hydraulic fluid between components

• Label components and indicate flow direction with arrows

• Include symbols for different components like pumps, valves, and cylinders

Gearbox motor alignment is crucial for optimal performance and longevity of the equipment.

• Ensure the gearbox and motor are properly aligned to prevent premature wear and damage.

• Use alignment tools such as dial indicators and laser alignment systems for accurate alignment.

• Check for any misalignment by measuring the coupling gap and making adjustments as needed.

• Regularly monitor and maintain the alignment to ensure smooth operation and prevent breakdowns.

• Improper alignment can ...read more

Oli leakage in Samson feeders can be caused by worn out seals, loose fittings, or improper installation.

• Check for worn out seals and replace them if necessary

• Tighten any loose fittings to prevent leakage

• Ensure proper installation of the feeder to prevent oil leakage

There are several types of valves used in mechanical systems.

• Gate valve

• Ball valve

• Butterfly valve

• Globe valve

• Check valve

• Diaphragm valve

• Plug valve

• Needle valve

• Pressure relief valve

• Safety valve

The gear box is a mechanical device that transmits mechanical power from a prime mover to an output device.

• A gear box contains gears of different sizes that mesh together to change the speed and torque of the mechanical power

• It is commonly used in vehicles to transfer power from the engine to the wheels

• Gear boxes can be manual or automatic, with manual gear boxes requiring the driver to shift gears manually

This question is not relevant to the Mechanical Fitter role.

• This question is not related to the job responsibilities of a Mechanical Fitter.

• Micro Miter is not a term commonly used in the mechanical fitting industry.

• It is possible that the interviewer may have misspoken or meant to ask a different question.

Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.

• Ball bearings use balls to reduce friction between two surfaces.

• Roller bearings use cylindrical rollers to support radial and axial loads.

• Plain bearings have a sliding surface instead of balls or rollers.

• Fluid bearings use a thin layer of liquid or gas to support the rotating shaft.

• Other types include magnetic bearings, jewel bearings, and pivot bearings.

Types of maintenance include preventive, predictive, corrective, and proactive maintenance.

• Preventive maintenance involves regular inspections and maintenance to prevent breakdowns.

• Predictive maintenance uses data and analytics to predict when equipment will need maintenance.

• Corrective maintenance is performed after a breakdown has occurred to restore equipment to working condition.

• Proactive maintenance involves identifying and fixing issues before they lead to equipment fail...read more

Types of working include full-time, part-time, contract, freelance, and remote.

• Full-time: working 40 hours per week for a single employer

• Part-time: working less than 40 hours per week for a single employer

• Contract: working for a specific period of time or project

• Freelance: working independently for multiple clients

• Remote: working from a location outside of the traditional office setting

Hydraulics flow refers to the movement of fluids through a hydraulic system to generate power or control mechanisms.

• Hydraulics flow is the movement of fluids, typically oil, through a hydraulic system to transmit power.

• The flow is controlled by valves, pumps, and actuators to regulate the speed and force of the system.

• Pressure is used to create the flow of fluid, which then moves through hoses, pipes, and cylinders to perform work.

• Examples include hydraulic systems in heavy m...read more