90+ Senior Technician Interview Questions and Answers

To troubleshoot a computer that doesn't turn on, check power connections, test the power supply, and diagnose hardware issues.

• Check power connections to ensure the computer is properly plugged in and the power switch is turned on.

• Test the power supply using a multimeter or by swapping it with a known working one.

• Diagnose hardware issues by disconnecting all peripherals, removing and reseating RAM and other components, and checking for any visible damage or loose connections.

• I...read more

Electrical faults in motors can include short circuits, open circuits, insulation breakdown, and overloading.

• Short circuits occur when there is a direct connection between the motor windings, causing excessive current flow.

• Open circuits happen when there is a break in the electrical path, preventing current from flowing.

• Insulation breakdown occurs when the insulation material surrounding the motor windings deteriorates, leading to electrical leakage or shorting.

• Overloading ha...read more

Transformers are devices that transfer electrical energy between two or more circuits through electromagnetic induction. Power factor is a measure of how effectively electrical power is being used in a circuit.

• Transformers work on the principle of electromagnetic induction, where a changing magnetic field induces a voltage in a nearby coil of wire.

• They are used to step up or step down voltage levels in electrical power transmission and distribution systems.

• Power factor is the...read more

The bore refers to the diameter of the cylinders in an engine. The transmission is the component that transfers power from the engine to the wheels. High efficiency accessories can include items like turbochargers or lightweight components.

• Bore is the diameter of the cylinders in an engine

• Transmission transfers power from engine to wheels

• High efficiency accessories can include turbochargers or lightweight components

Types of microscopes include light microscopes, electron microscopes, and scanning probe microscopes. Pathological examination of blood and stool typically uses a light microscope.

• Types of microscopes: light microscopes, electron microscopes, scanning probe microscopes

• Light microscopes are commonly used in pathological examination of blood, stool, and other biological samples

• Electron microscopes are used for higher magnification and resolution in studying ultrastructure of ce...read more

I will isolate the transformer and investigate the cause of the differential trip.

• Isolate the transformer from the system

• Check the differential relay settings and wiring

• Inspect the transformer for any physical damage or oil leaks

• Check the oil level and quality

• Investigate the cause of the differential trip

• Take corrective actions to prevent future trips

Both copper and aluminium condensers have their advantages and disadvantages.

• Copper condensers have better heat transfer properties and are more durable.

• Aluminium condensers are lighter and less expensive.

• Copper condensers are more commonly used in high-end air conditioners.

• Aluminium condensers are more commonly used in low to mid-range air conditioners.

• The choice between copper and aluminium condensers depends on factors like budget, efficiency requirements, and environmenta...read more

Temperature sensors measure the temperature of a machine and provide data for monitoring and control.

• Temperature sensors are used in machines to monitor and control temperature

• They provide data for maintenance and troubleshooting

• They can prevent overheating and damage to the machine

• Examples include thermocouples, RTDs, and thermistors

Yes, I have knowledge of machines and how to prevent maintenance.

• Regular cleaning and lubrication of machines

• Timely replacement of worn-out parts

• Following manufacturer's instructions for maintenance

• Implementing preventive maintenance schedules

• Conducting regular inspections to identify potential issues

• Training operators on proper machine usage and maintenance

Diamond is the hardest material known to man.

• Diamond is the hardest natural material on Earth.

• Hardness is measured on the Mohs scale, with diamond being a 10.

• Other hard materials include silicon carbide and boron nitride.

I have 11 years and 1 month of experience operating packing machines.

• Extensive experience in setting up, calibrating, and operating various types of packing machines

• Proficient in troubleshooting and resolving issues with packing machines to ensure smooth operation

• Trained in following safety protocols and maintaining cleanliness of packing machines

• Implemented efficiency improvements in packing processes to increase productivity

• Collaborated with team members to meet production ...read more

To hide lying maintenance mechanic jobs, one can falsify records, manipulate data, or cover up mistakes.

• Falsify maintenance logs to show completed tasks that were not actually done

• Manipulate equipment readings to make it appear that maintenance was performed

• Cover up mistakes by quickly fixing issues before they are noticed

• Provide false documentation or reports to show compliance with maintenance schedules

There are three main types of solutions used in coating: solvent-based, water-based, and powder coatings.

• Solvent-based solutions use organic solvents to dissolve the coating material.

• Water-based solutions use water as the main solvent for the coating material.

• Powder coatings are applied as dry powder and then cured under heat to form a hard finish.

Suction shell and pressure shell are components of a centrifugal pump.

• Suction shell is the part of the pump that houses the impeller and creates a low-pressure area to draw in fluid.

• Pressure shell is the part of the pump that contains the discharge nozzle and creates a high-pressure area to push out fluid.

• The two shells are separated by the impeller, which rotates to move fluid from the suction shell to the pressure shell.

• Suction shell is also known as the volute, while press...read more

Weight variation in capsule filling machine can be solved by calibrating the machine, checking the quality of raw materials, and optimizing the filling process.

• Calibrate the machine regularly to ensure accurate weighing.

• Check the quality of raw materials to ensure consistency in weight.

• Optimize the filling process by adjusting speed, vibration, and compression.

• Implement quality control measures to detect and reject capsules with weight variations.

• Train operators to follow pro...read more

Yes, I have practically handled major overhauling work on rotary pumps.

• Performed disassembly and reassembly of rotary pumps for maintenance and repair

• Replaced worn out parts such as seals, bearings, and impellers

• Inspected and tested pump components to ensure proper functioning

• Adjusted pump settings and alignments for optimal performance

• Trained junior technicians on rotary pump overhauling procedures

Sink mark, shot, flash, silver, discoloration, and warpage can be troubleshooted by identifying the root cause and taking corrective actions.

• Identify the root cause of the issue

• Check the mold design and material

• Adjust the injection molding process parameters

• Inspect the injection molding machine and auxiliary equipment

• Perform material analysis

• Conduct mold flow analysis

• Implement quality control measures

• Train operators on proper injection molding techniques

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

S1 duty refers to a continuous duty cycle of a motor or machine.

• S1 duty means that the motor or machine can run continuously without any rest or cooling breaks.

• It is typically used for applications where the load is constant and the motor or machine does not need to be turned off.

• Examples of S1 duty applications include conveyor belts, pumps, and fans.

• S1 duty is also known as continuous duty.

• It is important to ensure that the motor or machine is rated for S1 duty if it will b...read more

There are 3 lines of noodles plant in Mansha Thai Foods.

• Mansha Thai Foods has 3 lines of noodles plant

• Each line of noodles plant produces different types of noodles

• The noodles plant is a key production facility for Mansha Thai Foods

Some common communicable diseases in India include tuberculosis, dengue fever, malaria, and hepatitis.

• Tuberculosis

• Dengue fever

• Malaria

• Hepatitis

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.

A turbocharger is a device that increases the efficiency and power output of an engine by forcing more air into the combustion chamber.

• A turbocharger uses exhaust gases to drive a turbine, which in turn drives a compressor that forces more air into the engine.

• By increasing the amount of air available for combustion, a turbocharger allows the engine to burn more fuel and produce more power.

• Turbochargers are commonly used in automotive engines to improve performance and fuel ef...read more

Bearings are machine elements that reduce friction between moving parts and support axial and radial loads.

• Bearings are used in various applications such as automobiles, aircraft, and industrial machinery.

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

• Ball bearings are the most common type and consist of a series of balls held between two rings.

• Roller bearings use cylindrical or tapered rollers to support heavy loads.

• Plain bea...read more

Renewable energy is energy that is generated from natural resources that are replenished over time.

• Renewable energy sources include solar, wind, hydro, geothermal, and biomass

• Unlike fossil fuels, renewable energy sources do not produce harmful emissions

• Renewable energy is becoming increasingly popular due to concerns about climate change and energy security

ISO Standards help ensure consistent quality by providing guidelines and requirements for processes, products, and services.

• ISO Standards help organizations improve efficiency, reduce errors, and meet customer expectations.

• They provide a framework for implementing quality management systems and continuous improvement.

• ISO 9001 is a widely recognized standard for quality management systems, focusing on customer satisfaction and process improvement.

• ISO 13485 is specific to the m...read more

The protection device of a power transformer is called a Buchholz relay and it detects faults in the transformer oil.

• Buchholz relay is installed in the pipeline between the transformer tank and the conservator tank

• It detects faults such as overheating, overloading, and short circuits in the transformer oil

• It works by detecting gas bubbles generated by the fault and tripping the transformer

• It also provides an alarm signal to alert the operator of the fault

• Regular maintenance a...read more

A thermostat valve is a device that controls the flow of a fluid in a heating or cooling system based on the temperature.

• Thermostat valves are commonly used in HVAC systems to regulate the temperature of a room or building.

• They can be manual or automatic, with automatic valves using sensors to adjust the flow based on the temperature.

• Thermostat valves are essential for maintaining a comfortable and consistent temperature in a space.

• Examples of thermostat valves include radiat...read more

ACB and VCB are types of circuit breakers used in electrical systems.

• ACB stands for Air Circuit Breaker and VCB stands for Vacuum Circuit Breaker.

• ACBs use air as the medium to extinguish the arc formed during circuit interruption.

• VCBs use vacuum as the medium to extinguish the arc formed during circuit interruption.

• Both ACBs and VCBs are used to protect electrical equipment from overcurrent and short circuits.

• ACBs are commonly used in low voltage applications, while VCBs are ...read more

The B check part change name for DG sets refers to the replacement of components during the B check maintenance procedure.

• During the B check, various parts of the DG sets are inspected and replaced if necessary.

• The name of the part change depends on the specific component being replaced.

• Examples of part changes during B check may include replacing the fuel filter, air filter, spark plugs, or oil filter.

• The part change name is typically mentioned in the maintenance manual or s...read more

VCB and SF6 breaker are types of circuit breakers used in electrical systems.

• VCB stands for Vacuum Circuit Breaker, which uses vacuum as the arc quenching medium.

• SF6 breaker refers to a circuit breaker that uses sulfur hexafluoride gas as the arc quenching medium.

• Both VCB and SF6 breaker are used to interrupt the flow of current in electrical circuits and protect the system from overloads or faults.

• VCBs are commonly used in medium voltage applications, while SF6 breakers are ...read more

The question is asking about the motor type, drive type and function, OSG speed and function, and car top entry and pit entry in relation to a Senior Technician role.

• Motor type refers to the type of motor used in the system, such as AC or DC motors.

• Drive type and function relate to how the motor is controlled and the purpose it serves in the system.

• OSG speed and function refer to the speed at which the system operates and its specific function.

• Car top entry and pit entry are ...read more

To measure DC voltage using a multimeter, set the multimeter to the DC voltage setting, connect the probes to the circuit, and read the voltage displayed on the multimeter.

• Set the multimeter to the DC voltage setting

• Connect the black probe to the common (COM) terminal and the red probe to the voltage (VΩmA) terminal

• Touch the probes to the circuit or component to measure the DC voltage

• Read the voltage displayed on the multimeter

• Ensure the multimeter is set to a range higher th...read more

The types of connectors used in AC include power connectors, signal connectors, and data connectors.

• Power connectors: used to connect the AC power source to the device, such as IEC connectors

• Signal connectors: used for transmitting signals between devices, such as RCA connectors

• Data connectors: used for transferring data between devices, such as USB connectors

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

The tech stack used in ecomm varies depending on the platform and requirements.

• Common front-end tech stacks include HTML, CSS, JavaScript, and frameworks like React and Angular

• Back-end tech stacks may include programming languages like Java, Python, and PHP, and databases like MySQL and MongoDB

• Ecomm platforms like Shopify and Magento have their own tech stacks and APIs

• Mobile app development may involve tech stacks like Swift and Kotlin for iOS and Android respectively

GMP stands for Good Manufacturing Practice, SOP stands for Standard Operating Procedure, and ALCOA is an acronym for Attributable, Legible, Contemporaneous, Original, and Accurate.

• GMP is a set of guidelines and regulations that ensure the quality and safety of pharmaceutical products.

• SOPs are step-by-step instructions that outline the approved methods to perform specific tasks or operations.

• ALCOA is a principle used in data integrity, emphasizing that data should be attributa...read more

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.

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.

Complications in dialysis can be serious and require prompt management.

• Complications can include hypotension, infection, and clotting of the access site.

• Management may involve adjusting fluid removal rates, administering medications, and monitoring vital signs.

• Serious patients may require hospitalization and more intensive interventions.

• Preventative measures such as proper hand hygiene and access site care can help reduce the risk of complications.

I have 10 years of experience in total, with 4 years of experience as a UC technician.

• I have worked in various roles for 10 years, including 4 years as a UC technician

• During my time as a UC technician, I gained expertise in troubleshooting and resolving complex issues

• I have also developed strong communication and collaboration skills while working with cross-functional teams

• My experience in other roles has given me a well-rounded understanding of the industry and its challeng...read more

Blood is a vital fluid in the human body that circulates through the cardiovascular system, carrying oxygen, nutrients, hormones, and waste products.

• Blood is composed of red blood cells, white blood cells, platelets, and plasma.

• It plays a crucial role in transporting oxygen from the lungs to the body's tissues.

• Blood helps in regulating body temperature and maintaining pH balance.

• It contains antibodies and immune cells to fight against infections.

• Blood clotting is essential fo...read more

Checks in DG include visual inspection, fuel level, oil level, coolant level, battery condition, and load test.

• Visual inspection of the DG set and its components

• Checking fuel level and quality

• Checking oil level and quality

• Checking coolant level and quality

• Checking battery condition and electrolyte level

• Load testing the DG set

Bearings are used to reduce friction and support rotating or moving parts.

• Bearings help in reducing friction between two moving parts, which in turn reduces wear and tear of the parts.

• They also help in supporting the weight of the rotating or moving parts.

• Bearings are used in various applications such as in automobiles, industrial machinery, and household appliances.

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

Piping operations and maintenance in power plants

• Piping systems are crucial for power plant operations and require regular maintenance

• Maintenance includes inspection, cleaning, and repair of pipes and fittings

• Operations involve monitoring pressure, flow, and temperature of fluids in the pipes

• Proper installation and alignment of pipes is essential for efficient and safe operation

• Regular testing and inspection of pipes for leaks and corrosion is necessary

There are various types of coating machines used in different industries, such as vacuum coating machines, spray coating machines, and dip coating machines.

• Vacuum coating machines are used for applying thin films to materials in a vacuum environment.

• Spray coating machines use a spray gun to apply coatings onto surfaces.

• Dip coating machines involve immersing the substrate into a tank of coating material to achieve uniform coverage.