1000+ Service Engineer Interview Questions and Answers

TDS should be less than 500 ppm and hardness of water varies depending on location.

• TDS (Total Dissolved Solids) should be less than 500 ppm (parts per million) for safe consumption.

• Hardness of water varies depending on location and can be measured in terms of calcium and magnesium ions.

• Water with high levels of calcium and magnesium ions is considered hard water and can cause scaling in pipes and appliances.

• Water softeners can be used to reduce the hardness of water.

• Water wit...read more

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

There are various types of engines and maintenance procedures. Checklists are used to ensure proper maintenance.

• Types of engines include diesel, gasoline, electric, and hybrid.

• Maintenance procedures include routine maintenance, preventive maintenance, and corrective maintenance.

• Checklists are used to ensure proper maintenance and include items such as checking fluid levels, inspecting belts and hoses, and testing battery voltage.

• Maintenance schedules vary depending on the typ...read more

Compression ratio is calculated by dividing the volume of the cylinder when the piston is at the bottom by the volume when it's at the top. Inlet and exhaust valve sizes differ due to different requirements.

• Compression ratio = volume at bottom of piston stroke / volume at top of piston stroke

• Inlet valve is larger to allow more air-fuel mixture into the cylinder

• Exhaust valve is smaller to create higher velocity and better scavenging of exhaust gases

• Valve sizes are determined b...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.

I am familiar with standards such as ISO 9001, IATF 16949, and regulations like FMVSS and ECE. I ensure compliance through regular training, audits, and documentation.

• Familiar with ISO 9001 for quality management systems

• Knowledge of IATF 16949 for automotive quality management

• Understanding of regulations such as FMVSS (Federal Motor Vehicle Safety Standards) and ECE (Economic Commission for Europe)

• Regular training sessions to keep up-to-date with industry standards

• Conducting ...read more

Yes, I know how to operate air circuit breaker.

• I am familiar with the basic components of an air circuit breaker.

• I know how to turn on and off the breaker.

• I am aware of the safety precautions that need to be taken while operating the breaker.

• I have experience in troubleshooting and repairing air circuit breakers.

• I am knowledgeable about the different types of air circuit breakers and their applications.

The market potential for machine tools is significant due to increasing industrialization and automation.

• Growing demand for machine tools in various industries such as automotive, aerospace, and electronics

• Rapid industrialization in emerging economies like China and India

• Advancements in technology leading to the development of advanced machine tools

• Increasing focus on automation and precision in manufacturing processes

• Potential for machine tools in sectors like medical device...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

Railway signalling refers to the system used to direct railway traffic and ensure safety.

• Railway signalling includes various components such as signals, points, and interlocking systems.

• Signals are used to indicate to train drivers when it is safe to proceed or stop.

• Points are used to switch trains from one track to another.

• Interlocking systems ensure that conflicting movements cannot occur.

• Railway signalling has evolved over time, from manual systems to computerized systems....read more

I would immediately follow the company's bomb threat protocol and notify the appropriate authorities.

• Remain calm and composed

• Follow the company's bomb threat protocol

• Notify the office management or security team

• Evacuate the office if instructed to do so

• Cooperate fully with law enforcement agencies

• Do not touch any suspicious objects or packages

Customers should follow safety norms for EVs and dealerships must implement measures to ensure safe usage and maintenance.

• Regularly check battery health to prevent overheating or failure.

• Ensure proper charging practices, using only certified chargers.

• Educate customers on emergency procedures in case of an accident.

• Implement fire safety measures, such as fire extinguishers near charging stations.

• Conduct routine inspections of electrical systems to identify potential hazards.

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. A diode is a two-terminal electronic component that conducts current primarily in one direction. A rectifier is an electrical device that converts alternating current (AC), which periodically reverses direction, to direct current (DC), which flows in only one direction. An uninterruptible power supply (UPS) is a device that provides emergency ...read more

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

To detect earth leakage problem in a module, measure the current flowing through the earth wire.

• Measure the current flowing through the earth wire using a clamp meter.

• If the current is above the specified limit, then there is an earth leakage problem.

• Check the wiring and connections for any faults or damages.

• Perform insulation resistance test to confirm the issue.

• If the problem persists, consult with a qualified electrician.

Power electronics is the study of electronic circuits used to convert and control electric power.

• Power electronic components include diodes, transistors, thyristors, capacitors, inductors, and transformers.

• These components are used in circuits such as rectifiers, inverters, converters, and choppers.

• Power electronics is used in a variety of applications such as motor drives, renewable energy systems, and power supplies.

• Power electronics engineers design and develop these circu...read more

2mbar is higher than 5mbar in the case of a vacuum pump.

• In the case of a vacuum pump, the lower the pressure, the higher the vacuum level.

• Pressure is measured in units of pressure, such as millibar (mbar).

• So, 2mbar is a lower pressure than 5mbar, indicating a higher vacuum level.

Railway electronic interlocking system is a safety system that prevents conflicting movements of trains.

• It uses electronic signals to control the movement of trains and ensure safety.

• It prevents two trains from entering the same track section at the same time.

• It also ensures that a train can only enter a track section if the previous section is clear.

• It can be programmed to allow for different types of train movements, such as shunting or passenger trains.

• Examples of electron...read more

Ampere increases when motor runs in shut off head.

• Ampere is the measure of electrical current.

• Shut off head is the maximum head that a pump can generate.

• When the motor runs in shut off head, it experiences maximum resistance, causing the current to increase.

Yes, I am familiar with checking electronic components using both digital and analog multimeters.

• I am experienced in using a digital multimeter to measure voltage, current, and resistance in electronic components.

• I am also proficient in using an analog multimeter to check for continuity and resistance in circuits.

• I can perform tests such as diode testing, transistor testing, and capacitor testing using both types of multimeters.

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

Interlocking system is a safety mechanism that prevents unsafe conditions by ensuring certain conditions are met before allowing an action.

• Interlocking systems are used in various industries such as manufacturing, transportation, and energy.

• Types of interlocking systems include mechanical, electrical, and programmable logic controllers (PLCs).

• Mechanical interlocking systems use physical barriers to prevent unsafe conditions, such as a key that must be turned before a machine ...read more

Different types of glasses include DS, SG, TGH, and Tinted glass.

• DS stands for Double Strength glass, which is two times stronger than regular glass.

• SG stands for Safety Glass, which is designed to be more resistant to breakage and shattering.

• TGH stands for Tempered Glass with Heat Soak Test, which undergoes a heat treatment process to increase its strength and resistance to thermal stress.

• Tinted glass refers to glass that has been treated with a tint or color to reduce glare...read more

To reduce LOI of Bed Ash fly ash, ash seave analysis can be done and the following steps can be taken.

• Ash seave analysis can help identify the particle size distribution of the ash.

• The LOI can be reduced by controlling the combustion process and ensuring complete combustion.

• Adding additives like limestone or activated carbon can also help reduce LOI.

• Proper maintenance of the boiler and ash handling system can also prevent the accumulation of unburnt carbon.

• Regular cleaning of...read more

Electric vehicles primarily use lithium-ion batteries, which may require replacement due to various issues.

• Lithium-ion batteries are the most common type used in electric vehicles due to their high energy density and efficiency.

• Battery degradation over time can lead to reduced range and performance, often requiring replacement after several years.

• Temperature extremes can affect battery life; for example, excessive heat can accelerate degradation.

• Physical damage from accidents...read more

Equipment used in computer room air handling units include chillers, humidifiers, filters, fans, and controls.

• Chillers: Used to cool the air in the computer room.

• Humidifiers: Used to control the humidity levels in the room.

• Filters: Used to remove dust and other particles from the air.

• Fans: Used to circulate the air throughout the room.

• Controls: Used to regulate the temperature and other settings of the unit.

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.