500+ Technician Interview Questions and Answers

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• The ratio of a transformer is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding.

• To check AC voltage, use a voltmeter set to AC voltage and connect the probes to the circuit. To check DC volta...read more

The micrometer list count refers to the number of items or components listed in a micrometer measurement tool.

• The micrometer list count is the total number of items listed on a micrometer measurement tool

• It helps in accurately measuring the dimensions of small objects or components

• For example, a micrometer list count of 0.01mm indicates that the tool can measure up to 0.01mm precision

I have a good understanding of rolling in hot steel rolling mills.

• I am familiar with the process of hot steel rolling, which involves passing heated steel through a series of rollers to shape it.

• I have knowledge of the different types of rolling mills used in the industry, such as blooming mills, plate mills, and strip mills.

• I understand the importance of temperature control and lubrication in the rolling process to ensure the quality of the final product.

• I am aware of the sa...read more

My area of interest is electrical engineering and troubleshooting.

• Electrical engineering

• Troubleshooting

• Circuit design

• Equipment maintenance

• Power systems

1 horsepower is equivalent to 0.7457 kilowatt-hours (kWh).

• 1 horsepower is equal to 0.7457 kilowatts.

• To convert horsepower to kilowatt-hours, you need to multiply by 0.7457.

• For example, if a machine has a power rating of 100 horsepower, it would be equivalent to 74.57 kilowatt-hours.

I encountered difficulties in learning C due to its complex syntax and memory management.

• Understanding pointers and memory allocation

• Dealing with segmentation faults and memory leaks

• Mastering the syntax and usage of C libraries

• Debugging and troubleshooting C programs

First angle method and third angle method are two different approaches used in engineering drawings to represent the 3D views of an object on a 2D plane.

• First angle method is commonly used in Europe and Asia, where the top view is placed below the front view and the right side view is placed to the left of the front view.

• Third angle method is commonly used in North America, where the top view is placed above the front view and the right side view is placed to the right of the...read more

A PCB in a machine is called a printed circuit board.

• A PCB is a flat board made of non-conductive material with conductive pathways etched or printed onto it.

• It provides mechanical support and electrical connections for electronic components.

• PCBs are commonly used in machines and devices to facilitate the flow of electricity and control the functions of the machine.

• Examples of machines that use PCBs include computers, smartphones, televisions, and industrial equipment.

Quality control testing for point of sale machines involves rigorous testing to ensure functionality and accuracy.

• Testing hardware components such as card readers, touch screens, and printers for proper functionality

• Testing software for accuracy in processing transactions and generating receipts

• Performing stress tests to ensure the machine can handle high volumes of transactions

• Conducting security tests to prevent hacking or data breaches

• Regular maintenance checks to ensure c...read more

I ensure safety protocols by implementing a comprehensive plan and training workers on safety measures.

• Develop a safety plan specific to the job site

• Train workers on safety procedures and provide necessary safety equipment

• Conduct regular safety inspections and address any hazards immediately

• Ensure compliance with all relevant safety regulations and standards

• Encourage workers to report any safety concerns or incidents

• Hold regular safety meetings to discuss any updates or chang...read more

A transformer is a device that transfers electrical energy from one circuit to another through electromagnetic induction. A diode is a semiconductor device that allows current to flow in only one direction. A transistor is a semiconductor device used to amplify or switch electronic signals and power.

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

• Diodes are commonly used in rectifier circuits to convert AC to DC.

• Tran...read more

The wiring diagram is in parallel, with a voltage of X volts. The thermostat is located at Y position.

• The wiring diagram is in parallel, meaning that the components are connected in separate branches.

• The voltage of the diagram is X volts, which is the potential difference across the components.

• The thermostat is located at Y position, which controls the temperature in the system.

A water cold chiller is a device that cools water by removing heat from it, typically used in air conditioning systems or industrial processes.

• A water cold chiller uses a refrigeration cycle to cool water.

• It consists of components such as a compressor, condenser, expansion valve, and evaporator.

• The chiller circulates chilled water through a system to remove heat from the surroundings.

• It is commonly used in air conditioning systems for cooling buildings or in industrial proces...read more

PAC stands for Programmable Automation Controller. It is a device used in industrial automation to control and monitor processes.

• PAC is a type of controller used in industrial automation systems.

• It is programmable and can be customized to control and monitor various processes.

• PACs are often used in manufacturing plants, power plants, and other industrial settings.

• They can communicate with other devices and systems to gather data and make decisions.

• PACs offer advanced features...read more

The unit of resistance is ohm (Ω).

• Resistance is the opposition to the flow of electric current.

• Ohm is named after Georg Simon Ohm, a German physicist.

• The symbol for ohm is the Greek letter omega (Ω).

Different methods of calculating reserves include deterministic methods, probabilistic methods, and simulation models.

• Deterministic methods involve using fixed values for input parameters to calculate reserves.

• Probabilistic methods incorporate uncertainty by assigning probability distributions to input parameters.

• Simulation models simulate multiple scenarios to estimate reserves based on different input assumptions.

The question is unclear and does not make sense.

Yes, I have maintenance experience on both Cessna 172-R and C172-S aircraft.

• Performed routine inspections and maintenance tasks on Cessna 172-R and C172-S aircraft

• Troubleshooted and repaired mechanical and avionics issues on both models

• Followed manufacturer's guidelines and maintenance manuals for servicing and repairs

The rated voltage of single phase current is typically 120-240 volts while three phase current is typically 208-480 volts.

• Single phase current is commonly used in residential settings while three phase current is used in industrial settings.

• The rated voltage can vary depending on the specific application and location.

• In some countries, the rated voltage for single phase current may be different than in others.

• The voltage rating is important to ensure proper operation and safe...read more

Changing the capacitor wire of a fan can lead to malfunctioning of the fan or even damage to the fan motor.

• Incorrect wiring can cause the fan to not work properly or not work at all.

• Mismatched capacitor wire can damage the fan motor.

• It is important to follow the correct wiring diagram when replacing capacitor wires.

Electronic components are parts that make up electronic devices and systems.

• Electronic components are used to control the flow of electricity in electronic devices.

• Examples of electronic components include resistors, capacitors, transistors, and diodes.

• Electronic components can be classified as active or passive components.

• Active components require a power source to function, while passive components do not.

• Electronic components are essential to the functioning of electronic ...read more

To changeover pumps in case of emergency, follow proper shutdown procedures, switch to backup pump, and restart system. For furnace operation, ensure proper ventilation, monitor temperature, and follow safety protocols.

• Follow proper shutdown procedures for the affected pump to prevent damage.

• Switch to the backup pump to maintain continuous operation.

• Restart the system and monitor for any abnormalities or issues.

• For furnace operation, ensure proper ventilation to prevent carbo...read more

One liter of cement-based primer typically covers around 8 to 10 square meters of surface area.

• One liter of cement-based primer covers approximately 8 to 10 square meters

• Coverage may vary depending on the porosity and texture of the surface

• It is recommended to refer to the manufacturer's instructions for specific coverage rates

A CRO (Cathode Ray Oscilloscope) is used to display and analyze waveforms, while a function generator is used to generate different types of waveforms.

• CRO is used for visualizing electrical signals in the time domain, while a function generator is used to create specific waveforms like sine, square, triangle, etc.

• CRO provides a visual representation of the input signal's amplitude, frequency, and phase, while a function generator allows users to control the frequency, amplitu...read more

Automobiles are vehicles designed for transportation, typically powered by internal combustion engines.

• Automobiles are commonly used for personal transportation.

• They come in various types such as cars, trucks, and motorcycles.

• They are powered by internal combustion engines that burn fuel to generate power.

• Automobiles have various components like engines, transmissions, brakes, and suspension systems.

• Regular maintenance and servicing are necessary to keep automobiles in good w...read more

Raw materials for paint include pigments, binders, solvents, and additives.

• Pigments: Provide color and opacity to the paint (e.g. titanium dioxide, iron oxide)

• Binders: Holds the pigment particles together and adhere them to the surface (e.g. acrylic, alkyd)

• Solvents: Help in the application and drying of the paint (e.g. water, mineral spirits)

• Additives: Enhance properties like durability, flow, and drying time (e.g. anti-foaming agents, UV stabilizers)

HVAC stands for Heating, Ventilation, and Air Conditioning. UPS stands for Uninterruptible Power Supply. AHU stands for Air Handling Unit.

• HVAC refers to the technology used for indoor environmental comfort, including heating, cooling, and air quality control.

• UPS is a device that provides emergency power to a load when the input power source fails.

• AHU is a device used to regulate and circulate air as part of a heating, ventilation, and air conditioning system.

Key points to check during a scheduled preventive service

• Check fluid levels (oil, coolant, brake fluid)

• Inspect belts and hoses for wear and tear

• Inspect brakes for wear and proper function

• Check tire pressure and tread depth

• Inspect filters (air, oil, fuel) and replace if necessary

Preventive maintenance is important to ensure optimal functioning and prevent breakdowns.

• Preventive maintenance helps identify and fix potential issues before they become major problems.

• Regular maintenance can extend the lifespan of equipment and reduce the need for costly repairs.

• Preventive maintenance can also improve safety and reduce the risk of accidents.

• Examples include changing oil in a car, cleaning air filters in HVAC systems, and inspecting machinery for wear and te...read more

Different life insurance policies include term life, whole life, universal life, and variable life.

• Term life insurance provides coverage for a specific period of time.

• Whole life insurance offers coverage for the entire lifetime of the insured.

• Universal life insurance provides flexibility in premium payments and death benefits.

• Variable life insurance allows the policyholder to invest in separate accounts for potential growth.

A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.

• Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.

• There are two main types of transformers: step-up transformers and step-down transformers.

• Step-up transformers increase the voltage of the input power supply, while step-down transformers decrease the voltage.

• Other types of transformers include ...read more

BS4 and BS6 are emission norms for vehicles, with BS6 being more stringent and environmentally friendly.

• BS4 stands for Bharat Stage 4 and BS6 stands for Bharat Stage 6.

• BS4 emission norms were implemented in India in 2017, while BS6 norms were implemented in 2020.

• BS6 vehicles emit lower levels of harmful pollutants like nitrogen oxides and particulate matter compared to BS4 vehicles.

• BS6 compliant vehicles require the use of cleaner fuel with lower sulfur content.

• BS6 norms aim ...read more

There can be multiple different voltages on an I/O board depending on the components connected.

• I/O boards can have various voltages such as 5V, 12V, -12V, etc.

• Different components on the board may require different voltages to operate properly.

• It is important to ensure that the correct voltage is supplied to each component to prevent damage.

The clearance of a bearing in diameter can be measured using a micrometer or a dial gauge.

• Use a micrometer or a dial gauge to measure the diameter of the bearing.

• Measure the diameter at multiple points around the bearing to ensure accuracy.

• Subtract the measured diameter from the specified or nominal diameter to calculate the clearance.

• Clearance can be positive (when the measured diameter is smaller than the specified diameter) or negative (when the measured diameter is larger...read more

CRDI engine uses common rail technology while TDI engine uses turbocharging technology.

• CRDI stands for Common Rail Direct Injection while TDI stands for Turbocharged Direct Injection.

• CRDI engine uses a common rail to supply fuel to the injectors while TDI engine uses a turbocharger to increase the air intake.

• CRDI engine provides better fuel efficiency and lower emissions while TDI engine provides better power and torque.

• Examples of CRDI engines include Hyundai's CRDI engines ...read more

I have 5 years of experience servicing printers and scanners in a corporate setting.

• Performed regular maintenance on various printer models such as HP, Canon, and Epson.

• Troubleshooted and resolved hardware and software issues efficiently.

• Calibrated scanners for optimal performance.

• Managed inventory of printer supplies and replacement parts.

• Trained new technicians on printer and scanner servicing procedures.

A turbocharger is a device that increases the power output of an engine by compressing air. BS 6 is a set of emission standards for vehicles.

• A turbocharger uses exhaust gases to spin a turbine, which compresses air and sends it to the engine

• This compressed air allows the engine to burn more fuel and produce more power

• BS 6 is a set of emission standards that require vehicles to emit fewer pollutants than previous standards

• It requires the use of advanced technologies like selec...read more

Pizza baking typically occurs at a high temperature for a short amount of time.

• Pizza is usually baked at temperatures ranging from 450-500°F (232-260°C)

• Baking time can vary depending on the type of pizza and oven, but typically ranges from 10-15 minutes

• A preheated pizza stone or baking sheet can help achieve a crispy crust

• Wood-fired ovens can reach temperatures of 800°F (427°C) or higher for a quick bake

I have extensive knowledge in the process I handle.

• I have been handling this process for several years now.

• I have undergone training and certification in this process.

• I keep myself updated with the latest developments and best practices in this process.

• I have successfully implemented improvements in this process that resulted in cost savings and increased efficiency.

• I have also trained and mentored new employees in this process.

The engine works by converting fuel into energy through combustion, which powers the pistons and turns the crankshaft.

• Fuel is mixed with air and ignited in the combustion chamber

• The resulting explosion pushes the piston down, which turns the crankshaft

• The crankshaft converts the linear motion of the piston into rotational motion

• The rotational motion is transferred to the wheels through the transmission

• Examples of engines include gasoline, diesel, and electric

Interest in technical fields is significant as it drives innovation, problem-solving, and advancements in various industries.

• Interest in technical fields leads to innovation and the development of new technologies.

• It encourages problem-solving skills and critical thinking.

• Technical fields play a crucial role in driving advancements in various industries such as healthcare, engineering, and information technology.

A storage vasal in CIP is a vessel used for storing materials in a Clean-in-Place system.

• A storage vasal in CIP is a container or tank used to hold cleaning solutions, chemicals, or other materials in a Clean-in-Place system.

• It is designed to maintain the cleanliness and integrity of the stored materials.

• The storage vasal may have specific features such as temperature control, agitation, or filtration to ensure the quality of the stored materials.

• Examples of materials that ca...read more

The grade of oil to use in an engine is determined by the manufacturer's recommendations based on factors such as engine design, operating conditions, and climate.

• Check the owner's manual for the manufacturer's recommended oil grade

• Consider factors such as engine design, operating conditions, and climate when selecting oil grade

• Consult with a mechanic or oil specialist for guidance if unsure

Types of theft include burglary, robbery, and larceny. Energy meter theft involves tampering with or bypassing the meter to avoid paying for electricity.

• Burglary involves breaking into a building to steal property

• Robbery is the use of force or threat of force to steal property from a person

• Larceny is the theft of property without the use of force

• Energy meter theft can involve tampering with the meter or bypassing it to avoid paying for electricity

• This type of theft can be dan...read more

In case of fire, stay calm and evacuate the building immediately using the nearest exit.

• Activate the fire alarm and call the fire department.

• If possible, use a fire extinguisher to put out the fire.

• Do not use elevators, use stairs instead.

• Stay low to the ground if there is smoke.

• Check doors for heat before opening them.

• Assist others in evacuating the building.

• Once outside, move away from the building and do not re-enter until given the all-clear by authorities.

Calibration of RTDs involves comparing the sensor's output to a known reference and adjusting it accordingly.

• RTDs (Resistance Temperature Detectors) are calibrated to ensure accurate temperature measurements.

• Calibration involves comparing the RTD's resistance values at different temperatures to a known reference.

• Adjustments are made to the RTD's output signal to align it with the reference values.

• Calibration can be done using a calibration bath, dry block calibrator, or a tem...read more

AC supply changes direction periodically while DC supply flows in one direction only.

• AC supply changes direction periodically while DC supply flows in one direction only

• AC supply is used for household appliances while DC supply is used for electronic devices

• AC supply can be transmitted over long distances while DC supply cannot

• AC supply can be easily converted to DC supply using a rectifier

• DC supply is more efficient than AC supply for certain applications