30+ Interview Questions and Answers

The lubricant oil used in hydraulic systems is hydraulic oil, and the suitable grade depends on the specific requirements of the system.

• Hydraulic oil is specifically designed for use in hydraulic systems to provide lubrication, cooling, and sealing.

• The grade of hydraulic oil depends on factors such as operating temperature, pressure, and system design.

• Common grades of hydraulic oil include ISO VG 32, ISO VG 46, and ISO VG 68.

• It is important to consult the manufacturer's recom...read more

The process of oil top-up in a fluid coupling involves adding oil to maintain the desired level and ensure proper functioning.

• Check the oil level in the fluid coupling regularly

• Identify the oil fill point on the fluid coupling

• Use the appropriate type and grade of oil recommended by the manufacturer

• Slowly pour the oil into the fill point until the desired level is reached

• Avoid overfilling the fluid coupling as it can lead to overheating or leakage

• Monitor the oil level after to...read more

During conveyor inspection, you need to observe various aspects to ensure its proper functioning.

• Check for any signs of wear and tear on the conveyor belt

• Inspect the rollers and ensure they are rotating smoothly

• Look for any loose or damaged components, such as bolts or fasteners

• Check the tension of the conveyor belt and adjust if necessary

• Observe the alignment of the belt and make any necessary adjustments

• Inspect the conveyor motor and ensure it is running properly

• Check for a...read more

Pressure regulating valve maintains a constant pressure downstream, while pressure reducing valve reduces the pressure from a higher level to a lower level.

• Pressure regulating valve maintains a constant pressure downstream by adjusting the flow rate through the valve.

• Pressure reducing valve reduces the pressure from a higher level to a lower level, ensuring it stays within a specific range.

• Pressure regulating valves are commonly used in industrial processes to maintain consis...read more

A DC valve is a type of valve that controls the flow of direct current (DC) electricity in a circuit.

• DC valves are used to regulate the flow of DC current in various applications.

• They can be either normally open or normally closed, allowing or blocking the flow of current respectively.

• DC valves are commonly used in hydraulic systems, automotive applications, and industrial machinery.

• Examples of DC valves include solenoid valves, check valves, and proportional valves.

Pressure point of a gear is the point where the maximum force is applied to transmit power.

• Pressure point is where the teeth of two gears come into contact.

• It is the point where the force is exerted to transmit power from one gear to another.

• Proper lubrication and maintenance of pressure points are essential for smooth gear operation.

The temperature difference in the evaporator and the condenser is typically around 10-20 degrees Celsius in a refrigeration system.

• The evaporator is where the refrigerant absorbs heat from the surroundings and evaporates, so its temperature is lower.

• The condenser is where the refrigerant releases heat to the surroundings and condenses, so its temperature is higher.

• The temperature difference is necessary for the refrigeration cycle to work efficiently.

• For example, in a typical...read more

Centrifugal pump works by converting mechanical energy from a motor into kinetic energy in the fluid being pumped.

• Centrifugal force is created by the rotation of the pump impeller, which pushes the fluid towards the outer edges of the pump casing.

• The kinetic energy of the fluid increases as it moves through the pump, creating pressure that forces the fluid out of the pump discharge.

• Common applications of centrifugal pumps include water circulation in HVAC systems, wastewater ...read more

A pump is a mechanical device used to move fluids from one place to another.

• Pumps are commonly used in various industries such as water treatment, oil and gas, and manufacturing.

• There are different types of pumps including centrifugal pumps, diaphragm pumps, and gear pumps.

• Pumps can be powered by electricity, engines, or manual operation.

• Examples of pumps include water pumps used in households, fuel pumps at gas stations, and sewage pumps in wastewater treatment plants.

Module of a gear refers to the ratio of the pitch diameter to the number of teeth on the gear.

• Module is a key parameter in gear design and is used to determine the size of the gear teeth.

• It is calculated as the ratio of the pitch diameter to the number of teeth on the gear.

• Common modules include 1, 1.5, 2, 2.5, etc.

• Higher module values indicate larger gear teeth and vice versa.

The shaft diameter for the 22220 Ek Bearing is typically around 100 mm.

• The shaft diameter for the 22220 Ek Bearing is usually around 100 mm.

• The specific shaft diameter may vary slightly depending on the manufacturer.

• It is important to check the manufacturer's specifications for the exact shaft diameter.

Blast Furnace is a complex process used to extract iron from its ore. Safety aspects include proper ventilation, equipment maintenance, and emergency procedures.

• Blast Furnace is a high-temperature process that uses coke, limestone, and iron ore to produce pig iron.

• Proper ventilation is crucial to prevent the buildup of toxic gases like carbon monoxide and sulfur dioxide.

• Equipment maintenance is important to prevent accidents and ensure smooth operation.

• Emergency procedures sh...read more

PPEs are personal protective equipment used to protect workers from hazards. Hazards are potential sources of harm in the workplace. JHA stands for Job Hazard Analysis.

• PPEs (Personal Protective Equipment) are items such as gloves, helmets, goggles, and masks worn to minimize exposure to hazards.

• Hazards are potential sources of harm in the workplace, including physical, chemical, biological, and ergonomic hazards.

• Types of tools include hand tools, power tools, cutting tools, m...read more

Final products from blast furnace are pig iron and slag.

• Pig iron is the main product of blast furnace which is used for making steel.

• Slag is a byproduct of the iron-making process and is used as a construction material.

• Other byproducts include gases like carbon dioxide and carbon monoxide.

• Pig iron is further processed to make wrought iron, cast iron, and steel.

• The quality of pig iron depends on the quality of iron ore and coke used in the blast furnace.

The vernier caliper counting list is a list of measurements obtained by using a vernier caliper to measure the dimensions of objects.

• The vernier caliper counting list includes measurements of length, width, and thickness of objects.

• It is used to accurately measure dimensions with high precision.

• Each measurement on the list corresponds to a specific reading on the vernier scale.

• The list helps in recording and organizing measurements for analysis and comparison.

Pascal's law states that a change in pressure applied to an enclosed fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.

• Pressure applied to a confined fluid is transmitted equally in all directions.

• The principle is used in hydraulic systems to generate mechanical force.

• Example: Hydraulic car brakes work based on Pascal's law.

• Example: Hydraulic lifts use Pascal's law to lift heavy objects.

• The law is named after Blaise Pascal, a Fre...read more

VFD faults include overvoltage, undervoltage, overcurrent, overtemperature, and ground faults. Solutions include checking wiring, replacing faulty components, and adjusting settings.

• Overvoltage: check input voltage, adjust settings

• Undervoltage: check input voltage, adjust settings

• Overcurrent: check motor load, adjust settings

• Overtemperature: check cooling system, adjust settings

• Ground faults: check wiring, replace faulty components

To smoothly fulfill feeding blast furnace, proper planning, scheduling, and monitoring of raw material quality and quantity is necessary.

• Regularly monitor raw material quality and quantity

• Maintain a proper schedule for feeding the furnace

• Ensure proper mixing of raw materials

• Regularly clean and maintain the feeding system

• Train and supervise the workers to ensure proper feeding procedures

Lathe operation is a machining process where a cutting tool is used to remove material from a rotating workpiece to create a desired shape.

• Involves rotating a workpiece on a spindle while a cutting tool is brought into contact with the workpiece to remove material

• Can be used for turning, facing, drilling, boring, knurling, and threading operations

• Commonly used in metalworking, woodworking, and glassworking industries

Maintenance job involves ensuring the proper functioning of equipment, machinery, or systems through regular inspections, repairs, and replacements.

• Performing routine maintenance tasks to prevent breakdowns

• Identifying and troubleshooting issues to determine root causes

• Repairing or replacing faulty components

• Following maintenance schedules to ensure optimal performance

• Documenting maintenance activities for future reference

Equipment jobs work involves operating, maintaining, and repairing various types of equipment in a specific field.

• Operating equipment according to manufacturer's instructions

• Performing routine maintenance to ensure equipment functions properly

• Troubleshooting and repairing equipment when issues arise

• Following safety protocols to prevent accidents

• Keeping detailed records of equipment usage and maintenance

• Examples: operating a CNC machine, maintaining HVAC systems, repairing ind...read more

A gear module is the unit of measurement used to define the size of a gear tooth.

• Gear module is the ratio of the pitch diameter to the number of teeth in the gear.

• It is used to determine the size and spacing of gear teeth.

• Common gear modules include 1.0, 1.25, 1.5, etc.

The PLC used in our plant is Siemens S7-1200.

• Siemens S7-1200 is a popular choice for industrial automation due to its reliability and flexibility

• It offers a wide range of communication options and programming capabilities

• The PLC is used for controlling various processes and equipment in the plant

Engineering qualifications typically include a bachelor's degree in engineering or a related field, along with relevant work experience and professional certifications.

• Bachelor's degree in engineering or related field

• Relevant work experience

• Professional certifications (e.g. PE license)

• Continuing education and training

• Specialized skills or knowledge in a specific engineering discipline

My specialization is in mechanical engineering with a focus on robotics and automation.

• Specialization in mechanical engineering

• Focus on robotics and automation

• Experience in designing and implementing automated systems

• Knowledge of programming languages like Python and C++ for robotics applications

Mechanical engineering is a branch of engineering that involves the design, analysis, and manufacturing of mechanical systems.

• Involves designing and analyzing mechanical systems

• Includes areas such as thermodynamics, fluid mechanics, and materials science

• Focuses on the principles of physics and mathematics to design and create mechanical devices

• Examples include designing engines, machines, and HVAC systems

A conveyor is a mechanical device used to transport materials from one place to another.

• Conveyors are commonly used in industries for moving bulk materials or packages.

• They can be powered by motors, gravity, or manually operated.

• Examples include belt conveyors, roller conveyors, and screw conveyors.

A fuel pump is a component in a vehicle that transfers fuel from the fuel tank to the engine.

• Fuel pump is essential for delivering fuel to the engine for combustion.

• It is usually located inside the fuel tank or near it.

• There are different types of fuel pumps such as mechanical, electrical, and high-pressure fuel pumps.

• Fuel pumps can fail due to wear and tear, clogging, or electrical issues.

• Examples of vehicles with fuel pumps include cars, motorcycles, and boats.

There are various types of bearings used in mechanical systems, including ball bearings, roller bearings, and plain bearings.

• Ball bearings use balls to reduce friction and support radial and axial loads.

• Roller bearings use cylindrical rollers to support heavy radial loads.

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

• Other types include thrust bearings, needle bearings, and fluid bearings.

A conveyor pulley is a mechanical device used to change the direction of the belt in a conveyor system.

• Conveyor pulleys are used to redirect the belt in a conveyor system

• They come in various sizes and designs depending on the application

• Common types include drive pulleys, tail pulleys, and bend pulleys

• They are typically made of steel or other durable materials

A magnetic flow meter works by measuring the flow rate of a conductive liquid through a pipe using Faraday's law of electromagnetic induction.

• The meter consists of a tube lined with a non-conductive material and two electrodes that apply a magnetic field to the liquid.

• As the conductive liquid flows through the magnetic field, it generates a voltage proportional to its velocity, which is measured by the electrodes.

• The flow rate is then calculated based on the voltage signal an...read more

Bunkers can be liable if not properly maintained and inspected.

• Bunkers must be regularly inspected for safety hazards.

• If a hazard is found and not addressed, the bunker owner can be held liable for any resulting damages.

• Proper maintenance and upkeep can prevent liability issues.

• Liability can also depend on the intended use of the bunker and any agreements made between parties involved.

Conveyor belt changing procedure involves shutting down the system, removing the old belt, installing the new belt, and testing the system.

• Shut down the conveyor system and lock out/tag out the power source to prevent accidental start-up.

• Remove any debris or material from the conveyor belt and surrounding area.

• Loosen the tension on the belt by adjusting the take-up pulley or tensioning device.

• Remove the old belt by unfastening the belt fasteners or splicing.

• Install the new be...read more

A motor is a device that converts electrical energy into mechanical energy to produce motion.

• Motors are commonly used in various applications such as industrial machinery, household appliances, and vehicles.

• There are different types of motors including AC motors, DC motors, and servo motors.

• Motors consist of a rotor, stator, and various components such as coils, magnets, and brushes.

• Examples of motors include electric fans, washing machine motors, and car engines.

VCB stands for Vacuum Circuit Breaker, a type of circuit breaker that uses vacuum as the arc quenching medium.

• VCB is a type of circuit breaker that uses vacuum as the arc quenching medium.

• It is used to interrupt the current flow in case of a fault or overload in the electrical system.

• VCBs are commonly used in medium voltage applications.

• They are more reliable and require less maintenance compared to other types of circuit breakers.

The question seems to be asking about the maintenance of PTM parts and valves.

• PTM parts and valves are likely components in a mechanical system that require regular maintenance.

• Maintenance tasks may include inspection, cleaning, lubrication, and replacement of parts as needed.

• Proper maintenance of PTM parts and valves is crucial for the efficient operation of machinery.

• Examples of PTM parts could include bearings, seals, and gaskets, while valves could include control valves,...read more

The gear box changing process involves removing the old gear box, installing a new one, and testing for proper functionality.

• Ensure the equipment is turned off and disconnected from power source before starting the process

• Remove any covers or guards protecting the gear box

• Disconnect any electrical or mechanical connections to the gear box

• Use appropriate tools to unbolt and remove the old gear box

• Carefully install the new gear box, ensuring it is properly aligned and secured

• Re...read more