100+ Senior Service Engineer Interview Questions and Answers

Interview questions for Senior Service Engineer position related to CNC machines and bearings.

• CNC lathe and VMC machine have different geometries.

• Feed, speed, RPM, and spindle power can be calculated using formulas.

• Changing ball screw bearing requires disassembling the machine.

• Angular bearings have different angles and combinations depending on the machine.

• Taper in turning or face of turned part can be caused by various factors.

• I/O board is connected to various parts of the m...read more

Per axle load varies for different vehicle configurations like 6X2/6X4 etc.

• Per axle load is the maximum weight that can be carried by a single axle of a vehicle.

• For a 6X2 configuration, the per axle load is typically around 7-8 tons.

• For a 6X4 configuration, the per axle load is typically around 10-11 tons.

I have extensive technical experience in the power generation field.

• I have been working in the power generation field for over 10 years.

• I have a deep understanding of various power generation technologies such as gas turbines, steam turbines, and renewable energy systems.

• I have successfully completed several complex power generation projects, including the installation and commissioning of a 100 MW gas-fired power plant.

• I have expertise in troubleshooting and resolving techni...read more

We use various types of lubricants depending on the gearbox specifications and requirements.

• The type of lubricant used depends on the gearbox design and operating conditions.

• Common types of lubricants used in gearboxes include mineral oil, synthetic oil, and grease.

• Mineral oil is commonly used in low-speed and low-load applications, while synthetic oil is used in high-speed and high-load applications.

• Grease is used in applications where the gearbox is sealed and requires mini...read more

Backlash is the amount of play or clearance between two mating parts. It can be measured using a dial indicator.

• Backlash is a mechanical term used to describe the amount of movement between two mating parts.

• It is usually caused by wear and tear or manufacturing tolerances.

• Backlash can be measured using a dial indicator by placing it between the two parts and moving them back and forth.

• The amount of movement indicated on the dial is the amount of backlash.

• Backlash can be reduc...read more

There are several types of hydraulic pumps, including gear pumps, vane pumps, piston pumps, and screw pumps.

• Gear pumps are the most common type of hydraulic pump and are used in a wide range of applications.

• Vane pumps are known for their quiet operation and are often used in low-pressure applications.

• Piston pumps are capable of high-pressure operation and are often used in heavy-duty applications.

• Screw pumps are used in applications where a constant flow rate is required.

• Othe...read more

The number of core used in network cables for camera communication varies depending on the type of camera and network setup.

• Network cables for camera communication can have different numbers of cores, typically ranging from 2 to 8 cores.

• The number of cores required depends on factors such as the camera resolution, power requirements, and additional functionalities like audio or PTZ control.

• For basic camera communication, a 2-core network cable may be sufficient.

• However, for h...read more

A variable axial piston pump is a type of hydraulic pump that uses a rotating cylinder block with pistons to generate fluid flow.

• The pump consists of a cylinder block with multiple pistons arranged in a circular pattern.

• As the cylinder block rotates, the pistons move in and out of their respective cylinder bores.

• The movement of the pistons creates a reciprocating motion, which draws in and pushes out hydraulic fluid.

• The displacement of the pump can be adjusted by changing the...read more

A variety of tools can be used to check vehicles on the technical and body shop work side.

• Diagnostic scan tools to identify and troubleshoot technical issues

• Paint thickness gauges to measure the thickness of paint coatings

• Dent repair tools such as dent pullers and dent removal kits

• Frame straightening equipment to correct structural damage

• Wheel alignment tools to ensure proper alignment of wheels

• Compression testers to check engine compression

• Battery testers to assess battery h...read more

Tyres are classified based on their application and construction. The tyre industry is growing rapidly with increasing demand.

• Tyres can be classified as passenger car tyres, commercial vehicle tyres, off-road tyres, etc.

• Construction-wise, tyres can be classified as bias-ply, radial-ply, and tubeless.

• The tyre industry is expected to grow at a CAGR of 7.5% from 2020-2025.

• Increasing demand for automobiles, especially in developing countries, is driving the growth of the tyre ind...read more

Leveling instruments are used to measure and adjust the level of surfaces. Reading electrical and mechanical drawings involves interpreting symbols and dimensions.

• Leveling instruments are used to ensure that surfaces are level and flat. They typically consist of a spirit level or a laser level.

• To use a leveling instrument, place it on a stable surface and adjust it until the bubble is centered in the spirit level or align the laser beam with a reference point.

• Electrical drawi...read more

Itching issues in fluid can be solved by identifying the root cause and implementing appropriate measures.

• Conduct a thorough analysis of the fluid composition and identify any potential irritants.

• Check for any contamination or impurities in the fluid.

• Implement filtration or purification processes to remove any irritants or impurities.

• Consider adding anti-itching agents to the fluid.

• Regularly monitor and maintain the fluid to prevent any future itching issues.

The brake system in a wheel loader is responsible for controlling the stopping and slowing down of the machine.

• The brake system in a wheel loader typically consists of multiple components such as brake pedals, brake calipers, brake discs, and brake fluid.

• The brake pedals are used by the operator to apply pressure and activate the brakes.

• The brake calipers clamp down on the brake discs to create friction and slow down or stop the wheel loader.

• Brake fluid is used to transfer th...read more

I will handle customers with empathy, active listening, problem-solving skills, and clear communication.

• Show empathy and understanding towards customers' concerns

• Practice active listening to fully understand the issue before providing solutions

• Utilize problem-solving skills to address customer needs effectively

• Communicate clearly and professionally to ensure customers are informed and satisfied

Gear boxes are dismantled by following proper safety procedures and using appropriate tools.

• Ensure the gear box is not under load and is properly supported

• Remove any electrical or hydraulic connections

• Remove bolts and fasteners securing the gear box to the equipment

• Use a hoist or crane to lift the gear box off the equipment

• Disassemble the gear box using appropriate tools and following manufacturer's instructions

• Inspect and clean all components before reassembly

The type of axle used for a dumper can vary depending on the specific model and requirements.

• Common types of axles used for dumpers include single axles, tandem axles, and tri-axles.

• Single axles are typically used for smaller dumpers with lower load capacities.

• Tandem axles are commonly used for medium-sized dumpers and provide better stability and weight distribution.

• Tri-axles are used for larger dumpers with higher load capacities and offer increased load-bearing capabilitie...read more

Bearings are machine elements that reduce friction between moving parts. There are several types of bearings.

• Plain bearings

• Rolling element bearings

• Jewel bearings

• Fluid bearings

• Magnetic bearings

• Flexure bearings

Self starter motor is responsible for starting the engine without the need for external power source.

• Self starter motor is an electric motor that is used to start an engine without the need for external power source.

• It is commonly used in automobiles, motorcycles, and other machines that require internal combustion engines.

• The self starter motor is activated by turning the ignition key, which sends an electrical signal to the motor.

• The motor then turns the engine's crankshaft...read more

A CNC router machine is a computer-controlled cutting machine used for precision cutting and shaping of various materials.

• CNC stands for Computer Numerical Control.

• It uses a computer program to control the movement of the machine.

• It can cut, carve, and shape materials like wood, plastic, and metal.

• CNC routers are widely used in industries like woodworking, signage, and prototyping.

• They offer high precision and repeatability in cutting and shaping operations.

• CNC router machine...read more

CNC machines are computer-controlled machines used for precision machining.

• CNC stands for Computer Numerical Control.

• CNC machines are used in various industries for tasks like cutting, drilling, milling, and shaping materials.

• They are programmed using CAD/CAM software to produce highly accurate and complex parts.

• CNC machines offer high precision, repeatability, and automation, reducing human error and increasing productivity.

• Examples of CNC machines include CNC mills, lathes,...read more

ELV system stands for Extra Low Voltage system, which includes electrical systems operating at low voltage levels.

• ELV system refers to electrical systems operating at voltage levels below 50 volts AC or 120 volts DC.

• It includes various subsystems such as fire alarm systems, security systems, access control systems, CCTV systems, etc.

• ELV systems are commonly used in buildings, industries, and infrastructure projects.

• These systems are designed to provide safety, security, and c...read more

ELV System stands for Extra Low Voltage System.

• ELV System includes various systems that operate on low voltage such as fire alarm systems, security systems, access control systems, CCTV systems, etc.

• It is used to provide power and control to different electrical and electronic equipment in a building or facility.

• ELV System is essential for safety, security, and automation purposes.

• Examples of ELV systems include intercom systems, public address systems, data networks, lightin...read more

COD is Chemical Oxygen Demand, BOD is Biochemical Oxygen Demand, FM ratio is Food to Microorganism ratio.

• COD is a measure of the amount of oxygen required to chemically oxidize organic matter in water.

• BOD is a measure of the amount of oxygen required by microorganisms to break down organic matter in water.

• FM ratio is the ratio of food (organic matter) to microorganisms in a biological treatment system.

• Example: A high COD level in water indicates high organic pollution, while ...read more

Common Rail is a fuel injection system used in modern diesel engines. Starter Motor is used to start the engine by turning the crankshaft. Alternator generates electricity to charge the battery and power the electrical system.

• Common Rail is a high-pressure fuel injection system used in modern diesel engines to improve fuel efficiency and reduce emissions.

• Starter Motor is an electric motor used to start the engine by turning the crankshaft until the internal combustion engine ...read more

Parameters to check in ETP include pH level, temperature, turbidity, dissolved oxygen, and chemical dosing.

• pH level

• Temperature

• Turbidity

• Dissolved oxygen

• Chemical dosing

SCR stands for Selective Catalytic Reduction. It is a technology used to reduce nitrogen oxide emissions from diesel engines.

• SCR uses a catalyst to convert harmful nitrogen oxides into harmless nitrogen and water vapor.

• It requires a urea-based solution called AdBlue to work.

• SCR is commonly used in heavy-duty vehicles like trucks and buses.

• It is an effective way to meet emissions regulations without sacrificing engine performance.

Bacteria issues can be solved by implementing proper sanitation practices and using disinfectants.

• Regular cleaning and disinfecting of surfaces and equipment

• Proper hand hygiene practices

• Using appropriate disinfectants for specific types of bacteria

• Implementing a comprehensive infection control program

• Regular monitoring and testing for bacteria levels

• Proper storage and handling of food and other perishable items

PH is a measure of acidity or alkalinity of a solution. It stands for 'potential of hydrogen'.

• PH scale ranges from 0 to 14, with 7 being neutral.

• A solution with a PH less than 7 is acidic, while a solution with a PH greater than 7 is alkaline.

• PH is measured using a PH meter or litmus paper.

• PH plays an important role in various fields such as chemistry, biology, and environmental science.

Refrigeration cycle is a process in which refrigerant absorbs heat from the surroundings and releases it elsewhere to cool a space.

• Refrigerant absorbs heat from the space to be cooled in the evaporator

• The refrigerant is compressed in the compressor to increase its temperature and pressure

• The hot refrigerant then releases heat in the condenser and changes back to liquid form

• The liquid refrigerant passes through an expansion valve to reduce its pressure and temperature before e...read more

I was responsible for managing and maintaining a range of industrial machinery and equipment.

• Industrial machinery and equipment

• Maintenance and repair of various products

• Ensuring optimal performance and functionality

• Troubleshooting and resolving technical issues

A relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.

• Relays are used to control high voltage or high current circuits with low voltage or low current signals.

• When a current flows through the coil of the relay, it creates a magnetic field that attracts a metal armature, which closes the circuit.

• Relays are commonly used in automotive, industrial, and household applications.

• They can be used to control lights, motors, heate...read more

Handling customer complaints requires active listening, empathy, and prompt resolution.

• Listen actively to the customer's complaint and acknowledge their concerns.

• Show empathy and understanding towards the customer's situation.

• Offer a prompt resolution or solution to the customer's complaint.

• Follow up with the customer to ensure their satisfaction with the resolution.

• Document the complaint and resolution for future reference and improvement.

• Train and empower customer service r...read more

Yes, I have experience repairing home appliances like refrigerators, washing machines, and ovens.

• Experience repairing a variety of home appliances

• Knowledge of common issues and troubleshooting techniques

• Ability to work with different brands and models

• Skills in diagnosing and fixing electrical and mechanical problems

DH Units are decentralized heating units used in buildings to provide heating and hot water. Market refers to the industry and demand for these units.

• DH Units are decentralized heating units that are typically installed in individual buildings or complexes.

• They provide heating and hot water to the building occupants.

• The market for DH Units includes manufacturers, suppliers, installers, and maintenance providers.

• The demand for DH Units is driven by factors such as energy effic...read more

UPS battery mode is used as a backup power source when main power supply fails.

• UPS battery mode automatically switches on when main power supply fails

• UPS battery mode ensures continuous power supply to critical equipment

• UPS battery mode requires regular maintenance to ensure functionality

There are two types of current - AC and DC.

• AC stands for Alternating Current and DC stands for Direct Current.

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

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

CL Micromed is a medical device company that specializes in neurophysiology and neurology equipment.

• CL Micromed produces EEG, EMG, and PSG systems for clinical and research use.

• Their products are used in hospitals, clinics, and research institutions worldwide.

• CL Micromed also offers training and support for their equipment.

• Their products are designed to aid in the diagnosis and treatment of neurological disorders.

Water soluble oil is a type of cutting fluid used in metalworking that can be mixed with water to form an emulsion.

• Water soluble oil is a lubricant used in metalworking to reduce friction and heat during cutting operations.

• It can be mixed with water to form an emulsion that can be easily applied to the workpiece.

• Water soluble oil is preferred over traditional oil-based lubricants because it is easier to clean and does not leave a residue on the workpiece.

• Examples of water sol...read more

Achieving final water parameters involves proper testing, treatment, and monitoring.

• Perform regular water testing to monitor parameters such as pH, chlorine levels, and turbidity

• Adjust treatment methods based on test results to maintain optimal water quality

• Implement proper filtration systems to remove impurities and contaminants

• Regularly monitor and maintain equipment to ensure efficient operation

• Train staff on proper water treatment procedures and protocols

Transformers, rectifiers, filters, and transistors are all components commonly used in electrical circuits.

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

• 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.

• Filters are used to remove unwanted frequencies from a signal.

• A transistor is a...read more

The HD785-5 and HD785-7 are different models of heavy-duty trucks.

• The HD785-5 and HD785-7 are both models of the HD785 series of trucks.

• The main difference between the two models is the technology and features they offer.

• The HD785-7 is a newer model and may have improved performance, fuel efficiency, and safety features compared to the HD785-5.

• The HD785-7 may also have a higher payload capacity or a more advanced engine.

• It is important to consult the technical specifications ...read more

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

• Active components require external power to function, such as transistors and integrated circuits.

• Passive components do not require external power, such as resistors and capacitors.

• Active components can control the flow of electricity, while passive components simply store or dissipate energy.

I am confident in troubleshooting and maintaining network switches.

• Extensive experience with configuring and troubleshooting network switches

• Certifications in Cisco CCNA and CCNP

• Successfully resolved complex network issues for previous employers

An engine is a machine that converts fuel into mechanical energy to power vehicles or machinery.

• An engine typically consists of cylinders, pistons, a crankshaft, and a fuel system.

• Fuel is mixed with air and ignited in the cylinders, causing the pistons to move up and down.

• The movement of the pistons is transferred to the crankshaft, which then powers the vehicle or machinery.

• Engines can be classified based on their fuel type (gasoline, diesel, electric) and their configuratio...read more

Different angles affect tyre wear and performance.

• Camber angle affects the wear on the inside or outside of the tyre.

• Toe angle affects the wear on the edges of the tyre.

• Caster angle affects the stability and steering of the vehicle.

• Incorrect angles can lead to uneven wear, reduced performance, and safety issues.

• Regular alignment checks can help maintain proper angles and prolong tyre life.

To increase the pH level, add a base or decrease the amount of acid in the solution.

• Add a base such as sodium hydroxide or potassium hydroxide

• Decrease the amount of acid by diluting the solution with water

• Use a pH meter to monitor the pH level and adjust accordingly