90+ Field Service Engineer Interview Questions and Answers

Possible check points for high engine oil consumption

• Check for oil leaks in the engine

• Inspect the PCV valve and system for proper functioning

• Examine the piston rings for wear or damage

• Inspect the valve seals for leaks

• Check for excessive engine blow-by

• Inspect the turbocharger for oil leaks

• Check the engine breather system for clogs or restrictions

Biochemistry is the study of chemical processes within and relating to living organisms.

• Biochemistry involves the study of biomolecules such as proteins, carbohydrates, lipids, and nucleic acids.

• Working principle of biochemistry involves understanding the chemical reactions and processes that occur within living organisms.

• Methods used in biochemistry include chromatography, electrophoresis, spectrophotometry, and enzymology.

• Analyzers used in biochemistry include blood gas ana...read more

Possible causes of poor pick up in field service engineering

• Insufficient power supply to the equipment

• Mechanical issues with the pick-up mechanism

• Dust or debris obstructing the pick-up sensor

• Faulty or outdated software/drivers

• Improper calibration of the pick-up sensor

• Interference from external sources

• Worn-out or damaged pick-up components

The check point for a vehicle that won't start is to first check the battery.

• Check the battery connections for any loose or corroded terminals.

• Test the battery voltage using a multimeter to ensure it has sufficient charge.

• Inspect the battery for any signs of damage or leakage.

• If the battery is fine, check the starter motor and ignition system for any faults.

• Verify that there is fuel in the tank and check the fuel pump and filters for any issues.

Answers to technical questions related to machine operation and circuits

• Slow machine operation can be caused by various factors such as low power supply, mechanical issues, or software problems

• TC stands for torque converter which is used to transfer power from the engine to the transmission

• Transmission is responsible for changing the gear ratios to provide the appropriate speed and torque for the machine

• Open circuit means there is a break in the circuit which prevents the flo...read more

Wet compression test measures the compression pressure of an engine cylinder with the addition of a small amount of oil.

• Wet compression test is performed to determine if low compression in a cylinder is due to worn piston rings or cylinder walls.

• In this test, a small amount of oil is added to the cylinder through the spark plug hole before performing the compression test.

• If the compression pressure increases significantly after adding oil, it indicates that the low compressio...read more

To discharge the battery of a Hamilton lock when unable to input the lock code, you can use a battery discharger tool.

• Use a battery discharger tool to drain the battery completely.

• Once the battery is discharged, it should reset the lock system.

• If the lock still does not accept the code after discharging the battery, contact technical support for further assistance.

Machine not R/F, hydraulic function not working, engine overheating - causes and problems

• Machine not R/F can be caused by faulty wiring, malfunctioning control board, or damaged components

• Hydraulic function not working can be due to low fluid levels, clogged filters, or damaged hoses

• Engine overheating can be caused by low coolant levels, malfunctioning thermostat, or clogged radiator

• Regular maintenance and inspections can prevent these issues from occurring

The alternator generates electrical power, self-starter starts the engine. Relay controls high power circuits, fuse protects circuits from overloading, diode allows current to flow in one direction. Current is the flow of electrons, voltage is the electrical potential difference, power is the rate at which work is done. Restrictions limit the flow of current, conductor allows the flow of current.

• Alternator generates electrical power for the vehicle's electrical system

• Self-sta...read more

Routing clamp is set to secure cables, cable is routed from dashboard to clamp, error codes are reflected on dashboard.

• Secure routing clamp to prevent movement of cables

• Route cable neatly from dashboard to routing clamp to avoid tangling or damage

• Monitor dashboard for any error codes or alerts

• Refer to user manual for specific instructions on interpreting error codes

To check earthing problem in hospital and troubleshoot medical equipment, operate multimeter by selecting appropriate range and probes.

• Select appropriate range on multimeter based on expected voltage

• Connect probes to the multimeter and the equipment being tested

• Check for continuity and resistance in the earthing system

• Troubleshoot equipment by checking for voltage, current, and resistance

• Refer to equipment manual for specific troubleshooting steps

If the card reader does not read the ATM card, I will first check for any visible damage on the card or reader, clean the card and try again, and if the issue persists, contact technical support for further assistance.

• Check for any visible damage on the card or card reader

• Clean the card and try again

• Contact technical support for further assistance

Yes, I am familiar with system troubleshooting, software loading, and updating.

• I have experience in diagnosing and resolving system issues.

• I am proficient in loading and updating software on various platforms.

• I am familiar with troubleshooting techniques and tools.

• I stay updated with the latest software versions and patches.

• I have successfully resolved software-related issues in my previous roles.

Codel-Marshall Pvt Ltd is a company that specializes in manufacturing and providing a wide range of industrial automation products.

• Industrial automation products

• Control systems

• Sensors

• PLCs

• HMI devices

Yes

• Yes, I am capable of bringing up the machine without any expert support.

• I have experience in troubleshooting and resolving breakdowns independently.

• I possess knowledge and skills in debugging various technical issues.

• I am confident in my ability to handle machine-related challenges.

There are multiple PLC communication types commonly used in various industries.

• Some common PLC communication types include Ethernet/IP, Modbus, Profibus, and DeviceNet.

• Ethernet/IP is widely used in industries such as manufacturing, automotive, and oil and gas.

• Modbus is commonly used in industrial automation and building management systems.

• Profibus is often used in process automation and manufacturing.

• DeviceNet is commonly used in factory automation and material handling syste...read more

Krohne-Marshall pvt ltd manufactures various types of flowmeters including electromagnetic, ultrasonic, vortex, and thermal mass flowmeters.

• Electromagnetic flowmeters

• Ultrasonic flowmeters

• Vortex flowmeters

• Thermal mass flowmeters

There are three main types of solar panels available in the market: monocrystalline, polycrystalline, and thin-film. Among these, monocrystalline panels are considered the most efficient.

• Monocrystalline solar panels: made from single-crystal silicon, highest efficiency and longest lifespan

• Polycrystalline solar panels: made from multiple silicon crystals, slightly lower efficiency than monocrystalline

• Thin-film solar panels: made from various materials like cadmium telluride or...read more

A flowmeter is a device used to measure the flow rate of a fluid in a pipe or conduit.

• Flowmeters can be mechanical, electromagnetic, ultrasonic, or thermal based on the principle of operation.

• They work by measuring the velocity of the fluid passing through the meter and converting it into a flow rate.

• Flowmeters are commonly used in industries such as oil and gas, water treatment, and pharmaceuticals.

• Examples of flowmeter types include turbine flowmeters, Coriolis flowmeters, ...read more

Explanation of ACB, VCB, MPCB, MCCB, ELCB, LT and HT side definition and load consumption.

• ACB stands for Air Circuit Breaker and is used for high current applications.

• VCB stands for Vacuum Circuit Breaker and is used for medium voltage applications.

• MPCB stands for Motor Protection Circuit Breaker and is used for protecting motors from overload and short circuit.

• MCCB stands for Molded Case Circuit Breaker and is used for low voltage applications.

• ELCB stands for Earth Leakage C...read more

To fulfill spare target after IC engine, focus on inventory management, supplier relationships, and efficient distribution.

• Maintain accurate inventory levels to ensure availability of spare parts

• Establish strong relationships with suppliers to secure timely delivery of spare parts

• Implement efficient distribution channels to quickly deliver spare parts to customers

• Analyze historical data to predict demand and stock up on high-demand spare parts

• Regularly review and update spare...read more

Challenges in Food industry service field include equipment maintenance, sanitation regulations, and customer satisfaction.

• Equipment maintenance to ensure smooth operation

• Adherence to strict sanitation regulations to prevent contamination

• Meeting customer expectations for timely service and quality work

• Handling emergency repairs to minimize downtime

• Keeping up with technological advancements in food processing equipment

To configure a new currency box for different currencies, you need to access the settings menu and input the desired currencies.

• Access the settings menu on the currency box

• Select the option to add a new currency

• Input the currency code and denomination for each currency

• Save the changes and test the functionality with different currencies

Logic gates are electronic devices that perform logical operations on one or more binary inputs to produce a single binary output.

• Logic gates are the building blocks of digital circuits.

• They can perform operations such as AND, OR, NOT, NAND, NOR, XOR, and XNOR.

• Each gate has a specific truth table that defines its behavior.

• For example, an AND gate outputs 1 only when both inputs are 1.

• Logic gates are used in computers, calculators, and other digital devices.

Passive components do not require a power source to operate, while active components require a power source.

• Passive components include resistors, capacitors, inductors, and transformers.

• Active components include transistors, diodes, and integrated circuits.

• Passive components do not amplify or control electrical signals, while active components do.

• Passive components are typically used to attenuate or filter signals, while active components are used for signal processing and am...read more

Seals in pumps prevent leakage and maintain pressure, ensuring efficient operation.

• Seals prevent leakage of fluid from the pump

• They help maintain pressure within the pump system

• Common types of seals include mechanical seals, packing seals, and lip seals

• Mechanical seals use two flat surfaces pressed together to prevent leakage

• Packing seals use a material like graphite or PTFE to create a seal

• Lip seals use a flexible lip to prevent leakage

The machine that can visualize and see the tissue and nerve of the body is called an MRI machine.

• MRI (Magnetic Resonance Imaging) machine uses a strong magnetic field and radio waves to create detailed images of the body's tissues and nerves.

• It is a non-invasive diagnostic tool that can detect abnormalities in the body.

• MRI machines are commonly used to diagnose conditions such as brain and spinal cord injuries, tumors, and multiple sclerosis.

• The images produced by an MRI mach...read more

Yes, I have knowledge of UPS and battery.

• I have experience in installing, maintaining, and troubleshooting UPS systems.

• I am familiar with different types of batteries used in UPS systems such as lead-acid and lithium-ion.

• I understand the importance of battery backup in ensuring uninterrupted power supply to critical equipment.

• I have worked with various brands of UPS systems including APC, Eaton, and Tripp Lite.

High speed coupling consists of three main parts: driving member, driven member, and an elastic element.

• Driving member: usually a shaft with a keyway or spline to transmit torque.

• Driven member: usually a hub with a keyway or spline to receive torque.

• Elastic element: usually a flexible disc or grid that connects the driving and driven members and compensates for misalignment.

• Examples of high speed couplings include gear couplings, disc couplings, and grid couplings.

Vibration not working can be caused by various factors.

• Loose or damaged parts

• Electrical issues

• Mechanical failure

• Software malfunction

• Environmental factors

• Improper installation or maintenance

• Sensor or transducer failure

• Power supply issues

Isolation transformer is used to isolate the equipment from the power source, while online UPS provides continuous power and offline UPS switches to battery during power outage.

• Isolation transformer is used to protect equipment from power surges and noise by isolating it from the power source.

• Online UPS provides continuous power by constantly running off the battery and charging it simultaneously.

• Offline UPS switches to battery power only when the main power source fails, res...read more

To check current with a DMM, set the DMM to the current measurement mode, connect the DMM in series with the circuit, and read the current value displayed on the DMM.

• Set the DMM to the current measurement mode

• Connect the DMM in series with the circuit

• Read the current value displayed on the DMM

Engine oil pressure in a healthy engine is typically around 25-65 psi. The process of a 4-stroke engine involves intake, compression, power, and exhaust strokes.

• Engine oil pressure in a healthy engine is usually between 25-65 psi

• The process of a 4-stroke engine includes intake, compression, power, and exhaust strokes

• Intake stroke: Fuel and air are drawn into the combustion chamber

• Compression stroke: The fuel-air mixture is compressed by the piston

• Power stroke: The spark plug ...read more

I have experience using a variety of diagnostics tools including oscilloscopes, multimeters, and network analyzers.

• Oscilloscopes

• Multimeters

• Network analyzers

Various issues can occur with HPLC systems, affecting performance and results.

• Column blockage or clogging

• Leakage in the system

• Pump malfunction

• Detector signal instability

• Gradient formation problems

• Baseline noise or drift

• Sample contamination

• Injection problems

• Software or data analysis issues

CT scan uses X-rays and computer technology to create detailed images of the body's internal structures.

• X-ray beams are directed at the body from different angles.

• Detectors measure the amount of radiation that passes through the body.

• A computer processes the data to create cross-sectional images of the body.

• These images can be used to diagnose and monitor a variety of medical conditions.

• Examples include detecting tumors, evaluating injuries, and guiding surgical procedures.

HDMI is used to transmit high-quality audio and video signals between devices.

• HDMI is commonly used in home entertainment systems to connect devices like TVs, Blu-ray players, and gaming consoles.

• It provides a digital connection, ensuring high-quality audio and video transmission.

• HDMI cables can carry both audio and video signals, eliminating the need for separate cables.

• HDMI supports various video resolutions, including HD, Full HD, and 4K.

• It is also used in professional set...read more

DHCP stands for Dynamic Host Configuration Protocol. It is used to automatically assign IP addresses to devices on a network.

• DHCP eliminates the need for manual IP address configuration on each device in a network

• It helps in efficient management of IP addresses by dynamically assigning them to devices as they connect to the network

• DHCP servers lease IP addresses to devices for a specific period of time, known as a lease period

• DHCP also provides other network configuration inf...read more

IC/CI engine works by converting fuel into mechanical energy through combustion.

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

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

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

• Examples of IC/CI engines include gasoline and diesel engines.

• IC engines use spark plugs to ignite the fuel mixture, while CI engines use compression to ignite the fuel.

• IC/CI engines ar...read more

Isocratic pump delivers constant mobile phase composition while gradient pump delivers varying mobile phase composition.

• Isocratic pump delivers constant mobile phase composition while gradient pump delivers varying mobile phase composition.

• Gradient pump is used for separation of complex mixtures while isocratic pump is used for simple mixtures.

• Gradient pump is more versatile and flexible than isocratic pump.

• Isocratic pump is less expensive and easier to maintain than gradient...read more

Gear float is the amount of play between two gears while backlash is the amount of clearance between mating gear teeth.

• Gear float is the axial movement of a gear on its shaft or between two gears in mesh.

• Backlash is the amount of clearance between the mating gear teeth.

• Gear float and backlash are important factors in gear design and affect the performance and efficiency of the gear system.

• For example, excessive gear float can cause noise and vibration, while insufficient back...read more

To resolve product issues, identify the root cause and provide a solution to prevent future occurrences.

• Gather information about the issue from the customer and analyze the product

• Identify the root cause of the issue

• Provide a solution to fix the issue and prevent future occurrences

• Communicate the solution to the customer and ensure their satisfaction

Engine parts include pistons, cylinders, crankshafts, camshafts, valves, and spark plugs.

• Pistons are components that move up and down in the cylinders.

• Cylinders house the pistons and allow for combustion to occur.

• Crankshafts convert the linear motion of the pistons into rotational motion.

• Camshafts control the opening and closing of the valves.

• Valves regulate the flow of air and fuel into the cylinders and exhaust gases out.

• Spark plugs ignite the air-fuel mixture in the cylind...read more

A multimeter is a versatile tool used to measure voltage, current, and resistance in electrical circuits.

• Set the multimeter to the appropriate function (voltage, current, or resistance)

• Connect the probes to the circuit being tested

• Read the measurement displayed on the multimeter screen

• Ensure proper safety precautions are taken when working with live circuits

• For example, to measure voltage, set the multimeter to the voltage function, connect the probes to the circuit, and read...read more

Semi automatic systems require some human intervention, while fully automatic systems operate without human intervention.

• Semi automatic systems require manual input or control for certain functions

• Fully automatic systems operate without the need for human intervention

• Examples of semi automatic systems include semi-automatic washing machines and semi-automatic firearms

• Examples of fully automatic systems include fully automatic coffee machines and fully automatic car wash syste...read more

Cat-6 and Optical fibre are two different types of cables used for data transmission. Pixel definition refers to the number of pixels in an image.

• Cat-6 is a copper cable used for Ethernet networks, while optical fibre uses light to transmit data.

• Optical fibre has a higher bandwidth and can transmit data over longer distances than Cat-6.

• Pixel definition refers to the number of pixels in an image, which determines its resolution and clarity.

• Higher pixel definition means more pi...read more

Auxiliary parts of a turbine include control systems, cooling systems, lubrication systems, and instrumentation.

• Control systems: regulate the operation of the turbine

• Cooling systems: prevent overheating of the turbine components

• Lubrication systems: ensure smooth operation of the turbine's moving parts

• Instrumentation: monitors the performance of the turbine and provides data for maintenance and troubleshooting

• Other auxiliary parts may include filters, valves, pumps, and sensor...read more