60+ Technician Interview Questions and Answers for Freshers

Check the power source and connections.

• Check if the TV is properly plugged into a power outlet.

• Ensure that the power cable is not damaged.

• Verify if there is power supply to the outlet.

• Check if the power switch on the TV is turned on.

• Inspect the connections between the TV and any external devices.

Computer simulation can be conducted to study traffic flow on a busy road.

• Identify the key variables such as traffic volume, vehicle types, road conditions, and traffic control measures

• Develop a mathematical model to represent the flow of traffic

• Collect real-world data to calibrate and validate the model

• Use simulation software like VISSIM or SUMO to create a virtual environment

• Input the variables and parameters into the simulation software

• Run the simulation multiple times wit...read more

An engine is a machine that converts fuel into mechanical energy. There are two types of engines: petrol and diesel.

• An engine is a device that converts fuel into mechanical energy to power a vehicle or machine.

• Petrol engines use a spark plug to ignite the fuel-air mixture, while diesel engines use compression to ignite the fuel.

• Petrol engines are generally more powerful and responsive, while diesel engines are more fuel-efficient and have more torque.

• Other types of engines in...read more

Data structure is a way of organizing and storing data in a computer so that it can be accessed and used efficiently.

• Data structure defines the way data is organized and stored in memory

• It helps in efficient retrieval and manipulation of data

• Examples include arrays, linked lists, stacks, queues, trees, and graphs

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.

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

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

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

Step-up transformers increase voltage while step-down transformers decrease voltage.

• Step-up transformers have more turns in the secondary coil than in the primary coil.

• Step-down transformers have more turns in the primary coil than in the secondary coil.

• Step-up transformers are used in power transmission to increase voltage and reduce current loss.

• Step-down transformers are used in electronic devices to decrease voltage to a safe level.

• Both types of transformers use electroma...read more

Compressor servicing and maintenance involves regular cleaning, lubrication, and inspection of parts.

• Clean air filters and condenser coils regularly

• Check oil levels and replace if necessary

• Inspect belts, hoses, and electrical connections for wear and tear

• Schedule professional maintenance at least once a year

• Keep compressor in a clean, dry, and well-ventilated area

• Follow manufacturer's instructions for specific maintenance tasks

• Examples: Changing air filters, checking refriger...read more

A database management system is a software that allows users to create, access, and manage databases.

• DBMS is used to store and organize data in a structured manner

• It provides tools for data retrieval, modification, and deletion

• Examples include MySQL, Oracle, and Microsoft SQL Server

The raw material for wind blade manufacturing is primarily fiberglass and resin.

• Fiberglass is a composite material made of glass fibers and resin.

• The resin is typically a thermosetting polymer that hardens when cured.

• Other materials such as carbon fiber, balsa wood, and foam may also be used in the manufacturing process.

• The raw materials are layered and molded into the desired shape of the wind blade.

• The manufacturing process may also involve cutting, sanding, and finishing t...read more

The unit of magnetic flux is the Weber (Wb).

• The unit of magnetic flux is a measure of the total magnetic field passing through a given area.

• It is represented by the symbol Wb.

• One Weber is equal to one Tesla multiplied by one square meter.

• The magnetic flux can be calculated by multiplying the magnetic field strength by the area it passes through.

BPCR stands for Batch Production and Control Record. It is a document that provides a detailed record of the production and control activities for a specific batch of a product.

• BPCR is used in industries to ensure the quality and consistency of products.

• It includes information about the raw materials used, manufacturing processes, equipment used, and quality control tests performed.

• BPCR helps in tracking and tracing the production history of a batch.

• It is an essential documen...read more

A storage vasal in SIP refers to a mechanism for storing and retrieving data in a Session Initiation Protocol (SIP) environment.

• Storage vasal is used to store and retrieve data in SIP.

• It helps in managing and organizing data in a SIP environment.

• Examples of storage vasal in SIP include databases, file systems, and cloud storage.

• It allows for efficient data storage and retrieval during SIP sessions.

Diodes and transistors are electronic components used in circuits to control the flow of current.

• Diodes are two-terminal electronic components that allow current to flow in one direction only.

• Transistors are three-terminal electronic components that can amplify or switch electronic signals and are used in a wide range of electronic devices.

• There are two main types of transistors: bipolar junction transistors (BJTs) and field-effect transistors (FETs).

• BJTs are made of three la...read more

AC stands for alternating current and DC stands for direct current. They differ in the direction of flow of electrons.

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

• AC is used for power transmission over long distances while DC is used for electronic devices

• AC voltage can be easily changed using a transformer while DC voltage cannot be changed easily

• Examples of AC devices include household appliances while examples of DC devices include batteries and el...read more

Compressor components include a motor, compressor pump, pressure switch, pressure gauge, and air tank.

• Motor powers the compressor pump

• Compressor pump compresses air and sends it to the air tank

• Pressure switch turns the motor on and off based on the pressure in the tank

• Pressure gauge measures the pressure in the tank

• Air tank stores the compressed air for later use

Possible reasons for an engine not starting

• Faulty ignition system

• Fuel delivery issues

• Battery or starter motor problems

• Faulty sensors or computer system

• Mechanical issues like a seized engine

The list count of a vernier caliper typically includes the main scale and the vernier scale.

• The list count of a vernier caliper is usually 2, consisting of the main scale and the vernier scale.

• The main scale is typically graduated in millimeters or inches, while the vernier scale allows for more precise measurements.

• The vernier scale has divisions that are slightly smaller than those on the main scale, enabling measurements to be taken to a fraction of the smallest division o...read more

Time complexity refers to the amount of time an algorithm takes to run, while space complexity refers to the amount of memory it requires.

• Time complexity measures the efficiency of an algorithm in terms of the time it takes to execute as the input size increases.

• Space complexity measures the efficiency of an algorithm in terms of the amount of memory it requires as the input size increases.

• Time complexity is commonly expressed using Big O notation, such as O(n) or O(n^2), whe...read more

Vernier Kelly Park is a public park located in the city. It offers various recreational activities and amenities for visitors.

• Vernier Kelly Park is a public park

• Located in the city

• Offers recreational activities and amenities

• Open to visitors

Compressor part failure can be handled by identifying the root cause, replacing the faulty part, and conducting regular maintenance.

• Identify the root cause of the failure

• Replace the faulty part with a new one

• Conduct regular maintenance to prevent future failures

• Ensure proper lubrication and cooling of the compressor

• Monitor the compressor's performance and address any issues promptly

A pulley is a simple machine that uses a wheel and rope to lift heavy objects.

• There are three types of pulleys: fixed, movable, and compound.

• Fixed pulleys change the direction of the force applied to the rope.

• Movable pulleys increase the mechanical advantage of the system.

• Compound pulleys combine fixed and movable pulleys to increase both the direction change and mechanical advantage.

• Examples of pulleys include cranes, flagpoles, and elevators.

TSB stands for Technical Service Bulletin.

• TSB is a document issued by a manufacturer to provide information and instructions regarding a specific technical issue or problem.

• It is typically distributed to technicians and service centers to help them diagnose and repair the issue.

• TSBs often include step-by-step instructions, diagrams, and recommended solutions.

• They can cover a wide range of topics, such as software updates, recalls, troubleshooting procedures, and service recom...read more

The unit of electric charge is the coulomb (C).

• The unit of electric charge is a fundamental quantity in physics.

• It is denoted by the symbol 'Q'.

• One coulomb is equal to the charge of approximately 6.242 × 10^18 electrons.

• Electric charge is measured using an instrument called an electrometer.

A train can run on single phase by using a single-phase AC traction system.

• Single-phase AC traction system uses a single-phase supply to power the train's motors.

• The system includes a converter to convert the single-phase AC supply to DC for the motors.

• Examples of trains using single-phase traction systems include light rail systems and some commuter trains.

Machines require maintenance to ensure optimal performance and prevent breakdowns.

• Regular maintenance prevents wear and tear on machine parts

• Maintenance ensures machines are operating at peak efficiency

• Preventative maintenance can save money in the long run by avoiding costly repairs

• Maintenance can also improve safety by identifying potential hazards

• Examples include oil changes, filter replacements, and cleaning

• Neglecting maintenance can lead to decreased productivity and inc...read more

5G is the next generation of wireless technology, offering faster speeds, lower latency, and increased capacity compared to 4G.

• 5G offers faster speeds than 4G, with potential download speeds of up to 10 Gbps compared to 4G's 100 Mbps.

• 5G has lower latency, meaning faster response times for applications like gaming and video streaming.

• 5G has increased capacity to support more devices and data traffic compared to 4G.

• 5G technology uses higher frequency bands than 4G, which allows...read more

The die length and filter in use for the external coating machine are crucial for ensuring proper coating quality.

• The die length determines the thickness and uniformity of the coating applied to the product.

• The filter in use helps to remove any impurities or particles from the coating material, ensuring a smooth finish.

• Examples: A die length of 2mm may be used for thin coatings, while a filter with a mesh size of 100 microns can remove fine particles.

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.

• They consist of two coils of wire, called the primary and secondary, wrapped around a magnetic core.

• When an AC current flows through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.

• Transformers are comm...read more

Developmental activities in lab involve planning, executing, and analyzing experiments to understand biological processes.

• Developmental activities in lab involve designing experiments to study the growth and differentiation of cells.

• Researchers may use techniques such as cell culture, microscopy, and molecular biology to investigate developmental processes.

• Data analysis is crucial in developmental biology to interpret results and draw conclusions about the mechanisms underlyi...read more

The electrical problem is a faulty circuit breaker that needs to be replaced.

• Identify the faulty circuit breaker by testing each one individually

• Turn off power to the circuit breaker panel before replacing the faulty breaker

• Install the new circuit breaker following manufacturer's instructions

• Test the circuit to ensure the issue has been resolved

Performing 5 seconds maintenance tasks on a daily basis at work.

• Performing regular maintenance tasks can help prevent equipment breakdowns and prolong their lifespan.

• Examples of 5-second maintenance tasks include wiping down equipment, checking for loose screws, and clearing debris.

• By incorporating these tasks into a daily routine, employees can ensure that equipment is functioning properly and avoid costly repairs.

• Regular maintenance can also improve workplace safety by iden...read more

A compressor works by compressing air or gas to increase its pressure and decrease its volume.

• The compressor takes in air or gas and compresses it using a piston or rotor.

• The compressed air or gas is then stored in a tank or released through a valve.

• Different types of compressors include reciprocating, rotary screw, and centrifugal compressors.

• Compressors are used in various industries such as manufacturing, construction, and automotive.

• Regular maintenance and proper usage ar...read more

Engine overheating can be caused by various factors such as coolant leaks, radiator issues, or a malfunctioning thermostat.

• Check for coolant leaks in the system

• Inspect the radiator for any blockages or damage

• Test the thermostat to ensure it is functioning properly

• Verify the condition of the water pump

• Ensure proper airflow through the radiator by checking the cooling fan

• Consider the possibility of a blown head gasket

FTTH (Fiber to the Home) is a network technology that uses optical fiber to provide high-speed internet, TV, and telephone services directly to residential homes.

• FTTH stands for Fiber to the Home.

• It is a network technology that uses optical fiber cables to deliver high-speed internet, TV, and telephone services directly to residential homes.

• FTTH provides faster and more reliable internet connections compared to traditional copper-based networks.

• It allows for symmetrical uploa...read more

AC and DC are two types of electrical current. AC stands for Alternating Current and DC stands for Direct Current.

• AC (Alternating Current) is a type of electrical current that periodically changes direction.

• AC is commonly used in household electrical systems and is supplied by power companies.

• AC can be represented by a sine wave.

• DC (Direct Current) is a type of electrical current that flows in only one direction.

• DC is commonly used in batteries, electronic devices, and some p...read more

Wire is a single conductor while cable is a group of wires twisted or braided together.

• Wire is used for transmitting electrical signals or power over short distances.

• Cable is used for transmitting electrical signals or power over long distances.

• Wire is usually solid while cable is usually stranded.

• Examples of wire include speaker wire and Ethernet cable while examples of cable include coaxial cable and fiber optic cable.

The printing machine may have a software or hardware issue causing it to be unable to disable. Troubleshooting is needed to identify and fix the problem.

• Check if the printing machine is properly connected to power source

• Inspect the control panel for any error messages or indicators

• Restart the printing machine and see if the issue persists

• Update or reinstall the printer driver software

• Consult the user manual or contact technical support for further assistance

I study drawing by practicing regularly, taking classes, studying anatomy, observing real life objects, and seeking feedback from others.

• Practice regularly to improve skills and develop a personal style

• Take drawing classes to learn new techniques and receive guidance from instructors

• Study anatomy to understand the structure of the human body and improve figure drawing

• Observe real life objects to improve observational skills and capture details accurately

• Seek feedback from oth...read more

SPD stands for Standard Operating Procedure. It is a documented guide outlining the steps and activities required to complete a specific task or process.

• SPD helps ensure consistency and quality in work processes

• It provides a clear outline of responsibilities and expectations

• Examples include SOPs for laboratory experiments, manufacturing processes, and customer service protocols

The heating problem in the pouching machine may be caused by a faulty heating element or thermostat.

• Check the heating element for any signs of damage or malfunction.

• Inspect the thermostat to ensure it is functioning properly.

• Verify that the power supply to the machine is stable and sufficient.

• Consider consulting a technician for further diagnosis and repair if needed.

I am proficient in various technologies including programming languages, networking, cybersecurity, and cloud computing.

• Programming languages such as Java, Python, C++, and JavaScript

• Networking concepts like TCP/IP, DNS, and routing protocols

• Cybersecurity tools and practices including firewalls, encryption, and penetration testing

• Cloud computing platforms like AWS, Azure, and Google Cloud

I have extensive experience in managing construction sites and ensuring timely completion of projects.

• Effective communication with team members and stakeholders

• Strong problem-solving skills to address any issues that arise

• Attention to detail to ensure quality workmanship

• Ability to manage resources and stay within budget

• Experience in adhering to safety regulations and protocols

Solar panels are not currently being used in the checking area.

• No solar panels are installed in the checking area

• The area is powered by traditional electricity sources

• There are no plans to install solar panels in the near future

A controller is a device or software that manages the operation of a system or machine.

• Controls the inputs and outputs of a system

• Regulates the flow of data or signals

• Can be hardware (e.g. game controller) or software (e.g. temperature controller)

• Examples: video game controller, temperature controller in HVAC system