30+ Mechanical Maintenance Technician Interview Questions and Answers

Conveyor line gear box is used to control the speed and direction of the conveyor belt. Different types of belts are used depending on the application.

• Conveyor line gear box helps in controlling the speed and direction of the belt

• Belts used for conveyor line include PVC, rubber, and mesh belts

• Gear box is a mechanical device that transmits power and torque from one shaft to another

• 1 inch is equal to 25.4 mm

• Nut bolt size on spanner can be calculated using a thread gauge or by m...read more

1 inch is equal to 25.4 mm.

• 1 inch is a unit of length commonly used in the imperial system.

• The metric equivalent of 1 inch is 25.4 millimeters.

• The conversion factor between inches and millimeters is 25.4.

• To convert inches to millimeters, multiply the length in inches by 25.4.

• For example, 2 inches is equal to 50.8 millimeters.

The least count of a vernier caliper is the smallest measurement that can be accurately read on the scale.

• The least count is determined by the number of divisions on the main scale and the vernier scale.

• It is calculated by dividing the smallest division on the main scale by the number of divisions on the vernier scale.

• For example, if the smallest division on the main scale is 0.1 mm and the vernier scale has 10 divisions, the least count would be 0.01 mm.

• The least count repre...read more

The safety watch plays a crucial role in ensuring the safety of workers during confined space jobs.

• The safety watch is responsible for continuously monitoring the workers inside the confined space.

• They must be trained in rescue procedures and have the necessary equipment to respond in case of an emergency.

• The safety watch should maintain communication with the workers inside the confined space and be prepared to initiate rescue operations if needed.

• They must also ensure that ...read more

Nearing is a process of reducing the gap between two mating surfaces to improve their fit and performance.

• Nearing involves removing a small amount of material from one or both mating surfaces.

• It is done to improve the fit and performance of the parts, reduce wear and tear, and prevent leaks.

• Examples of nearing include lapping of valves, honing of cylinders, and grinding of gears.

• The principle behind nearing is to create a uniform and smooth surface that maximizes contact and ...read more

I have experience working with multiple pump and blower companies, including but not limited to Sulzer, Flowserve, and Gardner Denver.

• I have worked with Sulzer pumps in a chemical plant setting

• I have experience maintaining Flowserve pumps in a power plant

• I have repaired Gardner Denver blowers in a manufacturing facility

• I am familiar with other brands such as Ingersoll Rand and Atlas Copco

Different types of gaskets and valves used in a plant.

• Gaskets: Spiral wound gaskets, Ring joint gaskets, Sheet gaskets

• Valves: Gate valves, Globe valves, Ball valves, Butterfly valves

• Examples: Spiral wound gaskets are used for high-pressure applications, gate valves are used for on/off control

Reciprocating compressors are used in various industries for gas compression. Troubleshooting involves identifying and resolving issues with valves, pistons, and lubrication.

• Reciprocating compressors use pistons to compress gas.

• Common issues include valve leakage, piston ring wear, and inadequate lubrication.

• Troubleshooting involves inspecting and repairing valves, replacing worn piston rings, and ensuring proper lubrication.

• Examples of troubleshooting steps include checking ...read more

The first material production in a steel plant is iron ore.

• Iron ore is the primary raw material used in steel production.

• It is mined from the earth and then processed to remove impurities.

• The processed iron ore is then used in blast furnaces to produce molten iron, which is further refined to create steel.

• Other materials such as coal and limestone are also used in the steelmaking process.

A mechanical seal typically consists of two main parts: the stationary part and the rotating part.

• Mechanical seals can have various designs and configurations, but most commonly they have two parts.

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

• The two parts come together to form a seal that prevents fluid from leaking out of the pump.

• Some mechanical seals may have additional parts, such as springs ...read more

The least count of a vernier scale is the smallest measurement that can be read on the scale.

• The least count is determined by the number of divisions on the main scale and the vernier scale.

• It is calculated as the difference between one smallest division on the main scale and one division on the vernier scale.

• For example, if the main scale has divisions of 1 mm and the vernier scale has 10 divisions between two main scale divisions, the least count would be 0.1 mm.

Yes, I have experience in hydraulic and pneumatic crane maintenance.

• I have experience in troubleshooting hydraulic and pneumatic systems

• I am familiar with hydraulic and pneumatic components such as pumps, valves, cylinders, and hoses

• I have performed regular maintenance on cranes to ensure optimal performance

• I have repaired and replaced faulty components to prevent downtime

• I have followed safety protocols when working with hydraulic and pneumatic systems

The type of bearing used in the pneumatic system of a printing machine is likely to be ball bearings or roller bearings.

• Common types of bearings used in pneumatic systems include ball bearings and roller bearings

• Ball bearings are suitable for high-speed applications

• Roller bearings are better for heavy loads and shock resistance

A mechanical seal is typically used in gear boxes to prevent leakage and maintain proper lubrication for the vacuum pump.

• Mechanical seals are used to prevent leakage between the rotating shaft and the stationary pump/machine housing.

• They are crucial in maintaining the vacuum pump's efficiency and preventing contamination.

• Common types of mechanical seals include lip seals, labyrinth seals, and face seals.

• Regular maintenance and monitoring of the mechanical seal is important to...read more

Mechanical seal assembly is a device used to seal the gap between two mechanical parts to prevent leakage.

• It is used to prevent leakage between two mechanical parts

• It consists of two main parts: stationary and rotating

• The stationary part is fixed to the housing while the rotating part is attached to the shaft

• The two parts are held together by springs or other means

• Common applications include pumps, compressors, and mixers

Alignment of pump and motor is done using various methods.

• One method is the straight edge method, where a straight edge is used to align the pump and motor shafts.

• Another method is the dial indicator method, where a dial indicator is used to measure the misalignment and make adjustments.

• Laser alignment is a modern method that uses laser technology to align the pump and motor shafts with high precision.

• Alignment can also be done using laser alignment tools or computerized alig...read more

Trainers can be established by identifying the training needs, selecting appropriate trainers, and providing necessary resources.

• Identify the training needs of the organization

• Select trainers who have the necessary skills and experience

• Provide necessary resources such as training materials and equipment

• Establish a training schedule and ensure trainers are available

• Evaluate the effectiveness of the training program and make necessary adjustments

Steam turbines are used to convert steam energy into mechanical energy, commonly used in power plants for electricity generation.

• Steam turbines operate by expanding high-pressure steam through a series of stationary and rotating blades to generate mechanical energy.

• Regular maintenance of steam turbines is crucial to ensure optimal performance and prevent breakdowns.

• Maintenance tasks may include inspecting and replacing worn-out parts, checking for leaks, and monitoring vibrat...read more

The Vernier scale least count of 0.1 mm means that it can measure increments of 0.1 mm accurately.

• Vernier scale least count refers to the smallest measurement that can be accurately read on the scale

• In this case, the Vernier scale can measure increments of 0.1 mm

• This allows for precise measurements to be taken in increments of 0.1 mm

• For example, if the main scale reads 2.3 mm and the Vernier scale aligns at 0.2 mm, the total measurement would be 2.5 mm

The number of jaws in a machine can vary depending on the type of machine and its purpose.

• The number of jaws in a machine can range from 2 to 4 or more, depending on the specific design and function of the machine.

• Jaws are commonly found in machines such as vices, chucks, and clamps to hold and secure objects in place during operation.

• Some machines may not have jaws at all, depending on their intended use and design.

• It is important to understand the specific machine in questi...read more

Part off seal is a process of removing a part from a larger component without damaging it.

• Part off seal is commonly used in mechanical maintenance to replace worn out parts.

• It involves cutting or breaking the part off from the larger component using specialized tools.

• The process requires precision and care to avoid damaging the surrounding components.

• Examples of parts that may be removed using part off seal include bearings, gears, and shafts.

Alignment is the process of adjusting the position of two or more components to ensure they are in the correct position and orientation.

• Alignment is critical for ensuring proper functioning of machinery and equipment.

• Common methods of alignment include laser alignment, dial indicator alignment, and straight edge alignment.

• Alignment should be performed regularly to prevent wear and tear on components and reduce the risk of breakdowns.

• Examples of components that require alignme...read more

Work permit is a document that authorizes a person to carry out a specific job or task.

• Work permit is required for tasks that involve high risk or require specialized skills.

• It outlines the scope of work, safety precautions, and duration of the job.

• It is issued by the employer or a designated authority.

• Examples include hot work permit, confined space entry permit, and electrical work permit.

The question is likely asking about the factors affecting the speed and temperature of a parking machine.

• Factors affecting the speed of a parking machine could include motor efficiency, gear ratio, and friction in the system.

• Factors affecting the temperature of a parking machine could include ambient temperature, heat generated by the motor, and cooling mechanisms in place.

• Proper maintenance and lubrication can help optimize the speed and temperature performance of the parkin...read more

As a Mechanical Maintenance Technician, the nature of work involves repairing and maintaining mechanical equipment and machinery.

• Responsibilities include troubleshooting, diagnosing and repairing mechanical issues

• Performing preventative maintenance on equipment to ensure optimal performance

• Maintaining accurate records of maintenance and repairs

• Ensuring compliance with safety regulations and standards

• Liabilities include potential injury from working with heavy machinery and eq...read more

My specialty is in troubleshooting and repairing mechanical equipment, with a focus on preventative maintenance.

• Skilled in diagnosing and resolving mechanical issues

• Experienced in performing routine maintenance tasks

• Proficient in reading technical manuals and schematics

• Familiar with a variety of tools and equipment

• Able to work independently or as part of a team

• Examples: repairing pumps, replacing bearings, troubleshooting conveyor systems

Couplings are used to connect two shafts together for transmitting power. There are various types of couplings.

• Rigid Coupling

• Flexible Coupling

• Universal Coupling

• Jaw Coupling

• Gear Coupling

• Disc Coupling

• Chain Coupling

• Oldham Coupling

• Fluid Coupling

Bearings are used to reduce friction between two moving parts. There are several types of bearings.

• Ball bearings

• Roller bearings

• Needle bearings

• Thrust bearings

• Sleeve bearings

• Tapered roller bearings

Different types of scale used in mechanical maintenance include linear scale, vernier scale, micrometer scale, etc.

• Linear scale is used for measuring length or distance

• Vernier scale is used for more precise measurements

• Micrometer scale is used for measuring very small distances

• Dial scale is used for measuring weight or force

• Digital scale is used for accurate and easy readings

A mechanical seal is a device that helps prevent leakage between rotating and stationary parts in machinery.

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

• They consist of two main parts - a stationary component and a rotating component.

• The stationary component is typically attached to the pump housing, while the rotating component is attached to the pump shaft.

• The two components are held together with springs or other mechanisms to create a ...read more