100+ Service Engineer Interview Questions and Answers for Freshers

The compulsory policy excess in four wheeler private vehicles varies based on the vehicle's engine capacity.

• For vehicles with engine capacity less than 1500cc, the compulsory policy excess is Rs. 1000

• For vehicles with engine capacity between 1500cc and 2000cc, the compulsory policy excess is Rs. 2000

• For vehicles with engine capacity above 2000cc, the compulsory policy excess is Rs. 7500

AC and DC differ in the direction of electron flow. DC flows steadily in one direction while AC switches direction.

• AC stands for alternating current while DC stands for direct current

• AC is commonly used in household appliances while DC is used in batteries and electronic devices

• AC can travel long distances without losing much energy while DC cannot

• Examples of AC sources include power grids and generators while examples of DC sources include batteries and solar cells

Questions related to tyres, wear, and pressure for a Service Engineer position.

• Tyres are made of rubber and provide traction for vehicles

• There are two types of wear: normal wear and irregular wear

• NSD stands for 'Newly Standardized Dimension'

• Wear is the gradual loss of material from the surface of an object

• PSI stands for 'Pounds per Square Inch'

• Types of tyres include: summer, winter, all-season, performance, and off-road

• Types of tyre structure include: bias-ply, radial, and be...read more

The body panels in a car that can be seen from outside include the hood, doors, fenders, roof, trunk, and bumpers.

• Hood: Covers the engine compartment

• Doors: Provide access to the interior

• Fenders: Located above the wheels

• Roof: Covers the passenger compartment

• Trunk: Provides storage space

• Bumpers: Protect the front and rear of the car

I communicate openly with the manufacturer or client to understand the discrepancies and work towards finding a resolution.

• Openly communicate with the manufacturer or client to discuss the discrepancies

• Provide detailed explanations of your inspection findings and listen to their perspective

• Work collaboratively to find a resolution that satisfies both parties

• Refer to any relevant documentation or standards to support your findings

• Seek guidance from senior engineers or experts ...read more

Compulsory policy excess is the amount that the policyholder has to pay in case of a claim in a two-wheeler insurance policy.

• It is a fixed amount that is pre-decided by the insurance company.

• It is applicable for every claim made by the policyholder.

• The policyholder has to pay this amount before the insurance company starts paying for the claim.

• It is a way for the insurance company to reduce the number of small claims made by policyholders.

• For example, if the compulsory policy...read more

A radar system is used to measure water level depth and display the value.

• Radar technology is used to send and receive signals to measure the distance to the water surface.

• The time taken for the signal to bounce back is used to calculate the water level depth.

• The radar system then displays the measured water level value.

• Examples of radar systems used for water level measurement include ultrasonic radar and microwave radar.

Patents protect an entrepreneur's intellectual property and provide a competitive advantage.

• Patents prevent others from copying an entrepreneur's invention or idea.

• Patents provide legal protection and can be used to sue infringers.

• Patents can increase the value of a company and attract investors.

• Patents can also be licensed or sold for profit.

• Examples include the patent for the iPhone's touch screen technology and the patent for the first successful polio vaccine.

A hydraulic circuit diagram is a schematic representation of a hydraulic system, showing the flow of fluid and the various components involved.

• A hydraulic circuit typically consists of a pump, valves, actuators, and fluid lines.

• The pump is responsible for generating hydraulic pressure by converting mechanical energy into fluid flow.

• Valves control the direction, flow rate, and pressure of the hydraulic fluid.

• Actuators, such as cylinders or motors, convert hydraulic energy into...read more

Applying DC current to a transformer will cause the transformer to saturate, leading to overheating and potential damage.

• DC current does not alternate direction like AC current, causing a build-up of magnetic flux in the transformer core

• This leads to saturation of the core, increasing losses and heat generation

• Over time, the transformer may overheat and potentially suffer damage

• Example: Applying DC current to a power transformer meant for AC current can lead to overheating an...read more

Use a tire gauge to measure the pressure and depth of the tire tread to determine the tire number.

• Use a tire gauge to measure the pressure of the tire.

• Measure the depth of the tire tread using a tread depth gauge.

• Refer to the tire manufacturer's guide to determine the tire number based on the pressure and tread depth measurements.

• Alternatively, take a picture of the tire number and use it for reference.

1k, 2k, and 3k paints are used in cars.

• 1k paint is a single-component paint that dries quickly and is easy to apply.

• 2k paint is a two-component paint that requires a hardener to be added before application.

• 3k paint is a three-component paint that requires a hardener and a clear coat to be added before application.

• The type of paint used depends on the desired finish and level of durability.

• For example, 1k paint may be used for touch-ups, while 3k paint is typically used for hi...read more

CCTV stands for Closed Circuit Television. There are various types of CCTV systems, IP address is used for online configuration, and a network adapter is a hardware device for connecting a computer to a network.

• CCTV is a video surveillance system used for monitoring and recording activities in a specific area.

• Types of CCTV include analog, digital, wireless, and network-based systems.

• IP address is essential for configuring CCTV cameras to be accessible online.

• A network adapter...read more

I document defects by taking detailed notes and photos, then report them through a formal report or database entry.

• Take detailed notes of the defect including location, description, and severity

• Take photos or videos to provide visual evidence of the defect

• Report defects through a formal report or database entry

• Include any relevant information such as date, time, and any corrective actions taken

• Follow up on the defect to ensure it has been addressed properly

Common tools and equipment used during inspections include multimeters, pressure gauges, thermal imaging cameras, and diagnostic software.

• Multimeters for electrical testing

• Pressure gauges for measuring pressure levels

• Thermal imaging cameras for detecting heat anomalies

• Diagnostic software for analyzing system performance

Root cause analysis is crucial in quality control to identify and address the underlying reasons for issues, rather than just treating symptoms.

• Identifying the root cause helps prevent recurrence of the issue.

• It involves gathering data, analyzing the information, and determining the primary cause of the problem.

• Tools like fishbone diagrams, 5 Whys, and fault tree analysis are commonly used in root cause analysis.

• Example: If a machine keeps breaking down, the root cause could ...read more

AC drives are used for controlling the speed of AC motors, while DC drives are used for controlling the speed of DC motors.

• AC drives are used for controlling the speed of AC motors by varying the frequency of the input power.

• DC drives are used for controlling the speed of DC motors by varying the voltage supplied to the motor.

• AC drives are more commonly used in industrial applications due to the prevalence of AC power sources.

• DC drives are often used in applications where pre...read more

To connect 3 batteries in series with 36vdc capacity UPS, connect the positive terminal of the first battery to the negative terminal of the second battery, and so on.

• Connect the positive terminal of the first battery to the negative terminal of the second battery

• Connect the positive terminal of the second battery to the negative terminal of the third battery

• Connect the positive terminal of the third battery to the UPS

The best handling capacity to tolerate diplomacy is to have strong communication skills, empathy, and the ability to remain calm and composed in difficult situations.

• Strong communication skills are essential for understanding and conveying messages effectively.

• Empathy helps in understanding different perspectives and finding common ground.

• Remaining calm and composed allows for rational thinking and problem-solving.

• Being open-minded and flexible helps in adapting to different ...read more

Load test of a transformer involves applying a load to the transformer and measuring its performance, while no load test involves measuring the transformer's performance without any load.

• Load test determines the efficiency and voltage regulation of the transformer under load conditions.

• No load test measures the core losses and magnetizing current of the transformer without any load connected.

• Load test helps in determining the actual power output of the transformer under speci...read more

Enrolling biometric attendance system involves registering employees' biometric data and linking it to their unique identification number.

• Collect biometric data of employees such as fingerprints, iris scans, or facial recognition.

• Create a database to store the biometric data and link it to each employee's identification number.

• Train employees on how to use the biometric attendance system.

• Test the system to ensure accuracy and reliability.

• Regularly update and maintain the syst...read more

Learned about power transmission and distribution, substation equipment and maintenance.

• Acquired knowledge about the functioning of 132kv substation equipment

• Learned about power transmission and distribution systems

• Gained experience in substation maintenance and troubleshooting

• Understood the importance of safety measures in substation operations

Smoke detectors and fire alarm systems work by detecting smoke or heat and alerting occupants of a potential fire.

• Smoke detectors use sensors to detect smoke particles in the air.

• Fire alarm systems can be connected to smoke detectors and other sensors, such as heat detectors and carbon monoxide detectors.

• When smoke or heat is detected, the alarm system sounds an alarm and may also trigger sprinklers or other fire suppression systems.

• Regular maintenance and testing of smoke de...read more

Yes, I can do electrical load calculations. It involves determining the total power required for a system or circuit.

• Determine the power consumption of each electrical device in the system.

• Calculate the total power required by summing up the power consumption of all devices.

• Consider factors like voltage, current, and power factor in the calculation.

• Use formulas like P = VI for DC circuits and P = V x I x cos(theta) for AC circuits.

• Ensure the total power does not exceed the ca...read more

Resistance is the opposition to the flow of electric current, a diode is a semiconductor device that allows current to flow in one direction only, and a load cell is a transducer that converts force into an electrical signal.

• Resistance is measured in ohms and is used to control the flow of current in a circuit.

• A diode is a two-terminal electronic component that conducts current primarily in one direction.

• A load cell is a type of transducer that converts mechanical force into ...read more

Yes, I am capable of handling repairs and touring for vehicle inspection.

• I have experience in repairing and inspecting vehicles.

• I am familiar with the tools and equipment required for repairs.

• I am willing to travel for vehicle inspections.

• I am able to communicate effectively with customers and colleagues.

• I am committed to providing high-quality service to customers.

Proper power supply, mounting location, network connectivity, and recording device are required for installing a CCTV camera.

• Ensure proper power supply is available for the camera

• Select a suitable mounting location for optimal coverage

• Ensure network connectivity for remote access and monitoring

• Select a compatible recording device for storing footage

• Consider lighting conditions and weatherproofing for outdoor installations

BIOS stands for Basic Input/Output System. It is firmware that initializes hardware during the boot process and provides runtime services.

• BIOS is a firmware that is stored on a chip on the computer's motherboard.

• It is responsible for initializing and testing hardware components during the boot process.

• BIOS provides runtime services like managing system configuration settings and controlling input/output operations.

• It is the first software that runs when a computer is powered ...read more

The 12-Line Big Yard LED display uses 48 modules.

• The 12-Line Big Yard LED display uses 48 modules in total.

• Each line of the display consists of 4 modules.

• Therefore, 12 lines x 4 modules per line = 48 modules in total.

SI engines use spark plugs for ignition, while CI engines use compression for ignition.

• SI engines have spark plugs to ignite the air-fuel mixture, while CI engines rely on compression to ignite the fuel.

• SI engines are commonly used in gasoline vehicles, while CI engines are typically found in diesel vehicles.

• SI engines have a higher power output compared to CI engines.

• SI engines have a higher fuel efficiency compared to CI engines.

Electrical equipment plays a crucial role in powering and controlling various systems and processes.

• Electrical equipment is responsible for generating, distributing, and controlling power in various industries.

• It is used in a wide range of applications, from simple household appliances to complex industrial machinery.

• Electrical equipment includes generators, transformers, motors, switches, and control systems.

• It is essential for maintaining the safety and efficiency of variou...read more

There is currently no cure for HIV, but antiretroviral therapy can effectively suppress the virus.

• Antiretroviral therapy (ART) is a combination of medications that can suppress the virus and prevent progression to AIDS.

• ART does not cure HIV, but it can reduce the amount of virus in the body to undetectable levels.

• There is currently no known cure or vaccine for HIV, but research is ongoing.

• After 2 years of ART, the virus can be suppressed to undetectable levels, but it is stil...read more

No, there is no cure for HIV yet and an antidote has not been found.

• HIV is a virus that attacks the immune system and there is no cure for it yet.

• Antiretroviral therapy (ART) can help manage HIV and prevent it from progressing to AIDS.

• Research is ongoing to find a cure for HIV, but it is a complex virus that mutates quickly.

• An antidote is a substance that can counteract the effects of a poison or toxin, but HIV is not a poison or toxin.

Heat exchange in hydraulic machines is used to regulate temperature and prevent overheating.

• Heat exchange helps to maintain the temperature of hydraulic fluid within a safe operating range.

• It prevents overheating of the hydraulic system, which can cause damage to the components.

• Heat exchangers can be air-cooled or liquid-cooled, depending on the application.

• Examples of hydraulic machines that use heat exchange include excavators, cranes, and hydraulic presses.

Engine converts reciprocating motion into rotary motion to generate power.

• The piston moves up and down in a cylinder, which is connected to a crankshaft.

• The crankshaft converts the reciprocating motion of the piston into rotary motion.

• The rotary motion is then used to power the vehicle or machine.

• The process is repeated in a cycle to generate continuous power.

The essence of a radar system is to detect and track objects using radio waves.

• Radar systems use radio waves to detect and track objects in the surrounding environment.

• They work by emitting radio waves and then measuring the time it takes for the waves to bounce back after hitting an object.

• The radar system then analyzes the returned waves to determine the distance, speed, and direction of the object.

• Radar systems are used in various applications such as air traffic control, ...read more

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

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

• AC current can be easily transformed into different voltage levels using transformers while DC current cannot.

• AC current is more dangerous to humans than DC current at the same voltage level.

• Examples of AC devices include air conditioners, refrigerators, and washing machines while e...read more

A transducer is a device that converts one form of energy into another. It has various applications in different fields.

• Transducers are used in medical imaging equipment like ultrasound machines.

• They are also used in sensors for measuring physical quantities like temperature, pressure, and strain.

• In audio equipment, transducers are used to convert electrical signals into sound waves.

• Transducers are used in industrial automation for measuring and controlling processes.

• They are...read more

Before new UPS installation, check site for proper electrical connections, space availability, ventilation, and grounding.

• Check electrical connections for compatibility with UPS requirements

• Ensure there is enough space for UPS installation and maintenance

• Check for proper ventilation to prevent overheating

• Verify grounding to ensure safety and proper functioning

• Inspect site for any potential hazards or obstructions

The problem could be a blockage in the pump or a malfunctioning pressure sensor.

• Check for any obstructions or blockages in the pump system that may be restricting the flow.

• Inspect the pressure sensor to ensure it is functioning properly and providing accurate readings.

• Verify that the pump is receiving sufficient power and that all connections are secure.

• Consider the possibility of a faulty pump impeller or worn-out seals that are affecting the flow.

• Perform a thorough system c...read more

The railways generator engine may emit black smoke due to issues with fuel, air intake, or combustion.

• Possible reasons for black smoke include incorrect fuel-to-air ratio, clogged air filters, or faulty injectors

• Incomplete combustion can also lead to black smoke emissions

• Regular maintenance and proper tuning can help prevent black smoke issues

ACS stands for Access Control System and CCTV stands for Closed Circuit Television.

• ACS is a security system that controls and monitors access to a building or facility.

• It uses various methods like key cards, biometric scans, or PIN codes to grant or deny access.

• CCTV is a surveillance system that uses cameras to capture and record video footage.

• It is commonly used for security purposes to monitor and record activities in a specific area.

• ACS and CCTV are often used together to ...read more

Directional valve controls the direction of fluid flow while pressure reducing valve maintains a constant downstream pressure.

• Directional valve is used to control the direction of fluid flow in a hydraulic system.

• Pressure reducing valve is used to maintain a constant downstream pressure in a hydraulic system.

• Directional valve can be either a spool valve or a poppet valve.

• Pressure reducing valve can be either a direct acting or a pilot operated valve.

• Examples of directional va...read more

Single acting cylinders have one port for fluid to enter and exit, while double acting cylinders have two ports.

• Single acting cylinders use fluid pressure to extend the piston rod and a spring to retract it.

• Double acting cylinders use fluid pressure to extend and retract the piston rod.

• Single acting cylinders are commonly used in applications where the load is moved in one direction only, such as in dump trucks.

• Double acting cylinders are commonly used in applications where t...read more

We use different types of batteries depending on the vehicle type and model.

• Electric vehicles use lithium-ion batteries

• Hybrid vehicles use nickel-metal hydride batteries

• Conventional vehicles use lead-acid batteries

• Some high-end vehicles use advanced lead-acid or lithium-ion batteries

• Battery specifications may vary depending on the manufacturer and model

Turbocharger is used in internal combustion engines to increase power output while centrifugal compressor is used in HVAC systems to increase air pressure.

• Turbocharger is driven by exhaust gases while centrifugal compressor is driven by an electric motor or a gas turbine.

• Turbocharger compresses air before it enters the engine while centrifugal compressor compresses air after it enters the system.

• Turbocharger is used in automobiles, trucks, and aircraft while centrifugal compr...read more

To install a door, you need the door itself, hinges, screws, a door frame, a level, a drill, and a screwdriver.

• Door

• Hinges

• Screws

• Door frame

• Level

• Drill

• Screwdriver