Field Engineer

200+ Field Engineer Interview Questions and Answers

Updated 22 Mar 2025

Q51. Deviation part of the t&d, dept of the chamber, dept of the ot,about hdd & jcb & braker etc

Ans.

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Q52. What do you know about Drip irrigation system?

Ans.

Drip irrigation is a method of watering plants by applying water directly to the roots through a network of tubes and emitters.

  • Drip irrigation is a type of micro-irrigation system that delivers water slowly and directly to the roots of plants.

  • It helps in conserving water by reducing evaporation and runoff.

  • Drip irrigation is commonly used in agriculture, landscaping, and gardens.

  • Emitters are used to control the flow rate of water to each plant.

  • Drip irrigation systems can be au...read more

Q53. What is your experience with hardware installation?

Ans.

I have extensive experience in hardware installation across various environments, ensuring optimal performance and reliability.

  • Installed network infrastructure for a mid-sized office, including routers, switches, and cabling.

  • Configured and set up servers for a data center, ensuring proper power and cooling requirements were met.

  • Conducted hardware upgrades for medical imaging equipment, improving diagnostic capabilities.

  • Performed routine maintenance and troubleshooting on hard...read more

Q54. 3-What are the safety equipment and their working?

Ans.

Safety equipment includes hard hats, safety glasses, gloves, and respirators.

  • Hard hats protect the head from falling objects and electrical hazards.

  • Safety glasses protect the eyes from debris and harmful substances.

  • Gloves protect the hands from cuts, burns, and chemicals.

  • Respirators protect the lungs from inhaling harmful substances.

  • Each safety equipment has specific guidelines for proper use and maintenance.

  • Employers are responsible for providing and enforcing the use of saf...read more

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Q55. application of transistors explain

Ans.

Transistors are used to amplify or switch electronic signals in various electronic devices.

  • Transistors are used in amplifiers, oscillators, and digital circuits.

  • They can be used to amplify weak signals, such as in a radio receiver.

  • Transistors can also be used as switches, turning on and off electronic circuits.

  • Examples of devices that use transistors include computers, televisions, and smartphones.

Q56. Tell me about isolater and circuit breaker

Ans.

Isolators are devices used to disconnect a circuit from the power source, while circuit breakers are devices used to protect the circuit from overloads and short circuits.

  • Isolators are used for isolating a circuit from the power source for maintenance or repair purposes.

  • Circuit breakers are used to protect the circuit from overloads and short circuits by automatically breaking the circuit when necessary.

  • Isolators are typically manually operated, while circuit breakers can be ...read more

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Q57. How tha instruments work in industry?

Ans.

Instruments in industry work by measuring and controlling various parameters to ensure efficient and safe operations.

  • Instruments measure parameters such as temperature, pressure, flow rate, and level.

  • They provide feedback to control systems to adjust processes and maintain desired conditions.

  • Examples include thermocouples, pressure transmitters, flow meters, and level sensors.

  • Instruments can also be used for monitoring and diagnostics to detect issues and prevent equipment fa...read more

Q58. What is network, how many types of network ,

Ans.

A network is a group of interconnected devices that communicate with each other. There are several types of networks.

  • Local Area Network (LAN)

  • Wide Area Network (WAN)

  • Metropolitan Area Network (MAN)

  • Wireless Local Area Network (WLAN)

  • Virtual Private Network (VPN)

  • Personal Area Network (PAN)

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Q59. tell us about the time you had repair an equipment and how you fix it

Ans.

I repaired a malfunctioning MRI machine by replacing a faulty component.

  • Diagnosed issue with MRI machine

  • Identified faulty component

  • Obtained replacement part

  • Installed new component

  • Tested machine to ensure proper functioning

Q60. Which frequency band used in reliance jio for 4g?

Ans.

Reliance Jio uses the 2300 MHz band for 4G services.

  • Reliance Jio primarily operates on the 2300 MHz band for 4G services.

  • The 2300 MHz band is also known as the 2.3 GHz band.

  • This band provides high-speed data services to Jio customers.

Q61. What's process to reduce of Fomming in Drum?

Ans.

To reduce foaming in a drum, the process involves adjusting temperature, using anti-foaming agents, controlling agitation, and ensuring proper filling levels.

  • Adjust temperature to reduce foam formation

  • Use anti-foaming agents to break down foam

  • Control agitation to prevent excessive foam buildup

  • Ensure proper filling levels to avoid overflow and foam creation

Q62. Frequency of cube casting & testing per cubic meter

Ans.

The frequency of cube casting and testing per cubic meter varies depending on the project requirements and specifications.

  • The frequency of cube casting and testing is determined by the project specifications and quality control requirements.

  • In general, cube casting and testing may be done at regular intervals during the construction process.

  • For example, in a large construction project, cube casting and testing may be done every 50 cubic meters of concrete poured.

  • The number of...read more

Q63. What do Schlumberger do?

Ans.

Schlumberger is a multinational oilfield services company providing technology, information solutions, and integrated project management.

  • Provides services to the oil and gas industry

  • Offers technology and information solutions

  • Specializes in integrated project management

  • Has operations in over 85 countries

  • Offers services such as drilling, reservoir characterization, production, and processing

Q64. What are the factors which affect Power plant efficiency.

Ans.

Factors affecting power plant efficiency include type of fuel, technology used, maintenance, and operating conditions.

  • Type of fuel used (coal, natural gas, nuclear, etc.)

  • Technology used in the power plant (combined cycle, cogeneration, etc.)

  • Maintenance practices (regular maintenance vs. neglect)

  • Operating conditions (temperature, pressure, load demand)

  • Efficiency of heat transfer processes

  • Size and age of the power plant

  • Environmental regulations and emissions controls

  • Efficiency ...read more

Q65. What is ladder logic programming

Ans.

Ladder logic programming is a graphical programming language used in industrial automation to create logic circuits.

  • Ladder logic programming is based on the concept of relay logic, where electrical circuits are represented using ladder diagrams.

  • It is commonly used in programmable logic controllers (PLCs) to control and automate industrial processes.

  • Ladder logic programming uses a set of symbols and contacts to represent inputs, outputs, and logic functions.

  • The logic circuits ...read more

Q66. Different types of transformer and there rating in kv Difference between lv and hv side.

Ans.

Different types of transformers and their ratings in kV. Explanation of LV and HV sides.

  • Transformers: Power, Distribution, Auto, Isolation, Instrument, etc.

  • Ratings: 1 kV, 11 kV, 33 kV, 66 kV, 132 kV, 220 kV, 400 kV, etc.

  • LV side: Low Voltage side of transformer, typically below 1 kV.

  • HV side: High Voltage side of transformer, typically above 1 kV.

  • LV side is used for distribution while HV side is used for transmission.

  • LV side has more turns in the winding while HV side has fewer...read more

Q67. What will you do if void present in the structure

Ans.

I will assess the severity of the void and determine the appropriate course of action.

  • Conduct a thorough inspection of the structure to determine the size and location of the void

  • Evaluate the potential impact of the void on the structural integrity of the building

  • Determine the appropriate repair method based on the severity of the void and the type of structure

  • Consult with structural engineers and other experts as needed to develop a repair plan

  • Implement the repair plan and c...read more

Q68. What we will do if void present in the structure

Ans.

The void in a structure needs to be identified and filled with appropriate materials to ensure structural integrity.

  • Identify the location and size of the void

  • Determine the cause of the void

  • Select appropriate materials to fill the void

  • Ensure proper compaction and curing of the materials

  • Perform necessary testing to ensure structural integrity

Q69. What scope of wirks were you assigned to?

Ans.

I was assigned to a wide scope of works including network design, installation, troubleshooting, and maintenance.

  • Network design

  • Installation

  • Troubleshooting

  • Maintenance

Q70. Which typee of dosing in Boiler Drum ?

Ans.

There are two main types of dosing in Boiler Drum: continuous dosing and intermittent dosing.

  • Continuous dosing involves adding chemicals continuously to maintain a desired level of treatment in the boiler water.

  • Intermittent dosing involves adding chemicals at specific intervals to prevent scale and corrosion buildup.

  • Examples of chemicals used for dosing in Boiler Drum include oxygen scavengers, pH adjusters, and scale inhibitors.

Q71. What tools do you use to replace lcd panel?

Ans.

I use a variety of tools including screwdrivers, suction cups, and spudgers to replace LCD panels.

  • Screwdrivers of various sizes to remove screws holding the panel in place

  • Suction cups to lift the panel off the device without damaging it

  • Spudgers to gently pry the panel away from the device

  • Anti-static wrist strap to prevent damage from static electricity

  • Cleaning cloth to remove any dust or debris before installing the new panel

Q72. Manpower output for works like shuttering,steel,blockwork,plaster etc

Ans.

Manpower output varies depending on the type of work, with factors such as skill level, equipment availability, and project timeline playing a role.

  • Manpower output for shuttering can range from 10-20 sqm per day depending on complexity

  • Steelwork output can vary from 50-100 kg per worker per day

  • Blockwork output can range from 50-100 blocks per worker per day

  • Plastering output can vary from 10-20 sqm per worker per day

  • Factors such as skill level, equipment availability, and proje...read more

Q73. Requirements for confined space activities

Ans.

Requirements for confined space activities include proper training, equipment, and safety measures.

  • Confined space entry permit is required

  • Proper ventilation and air monitoring must be conducted

  • Workers must be trained in confined space procedures and emergency response

  • Personal protective equipment (PPE) such as harnesses, lifelines, and gas detectors should be used

  • A competent person should be present to monitor the activities and ensure safety

  • Rescue plan and equipment should b...read more

Q74. How to reduce honeycomb in concreting

Ans.

To reduce honeycomb in concreting, proper vibration techniques and use of appropriate mix design can be helpful.

  • Ensure proper compaction of concrete using internal or external vibrators

  • Use appropriate mix design with correct water-cement ratio

  • Avoid overworking or over-manipulating the concrete

  • Use proper formwork and avoid gaps or voids

  • Properly cure the concrete after placement

Q75. Transform used and working principle

Ans.

Transform used and working principle

  • A transform is a device used to convert electrical energy from one voltage level to another

  • It works on the principle of electromagnetic induction

  • Transformers consist of two coils, primary and secondary, wound around a common iron core

  • The primary coil is connected to the input voltage source and the secondary coil to the load

  • When an alternating current flows through the primary coil, it creates a changing magnetic field

  • This changing magnetic...read more

Q76. What is w/c ratio of M20 grade of concrete

Ans.

The water-cement ratio (w/c) of M20 grade concrete is typically 0.45.

  • The w/c ratio is the ratio of the weight of water to the weight of cement in a concrete mix.

  • For M20 grade concrete, the w/c ratio is generally recommended to be 0.45.

  • This means that for every 1 kg of cement, 0.45 kg of water is used.

  • The w/c ratio affects the strength, workability, and durability of the concrete mix.

Q77. What are the components of WTP?

Ans.

WTP stands for Water Treatment Plant. It consists of various components that work together to purify water.

  • Coagulation and Flocculation

  • Sedimentation

  • Filtration

  • Disinfection

  • Storage and Distribution

Q78. What is motors, star delta converter starter

Ans.

A star delta converter starter is a type of motor starter used to reduce the starting current of a motor.

  • It is used for three-phase induction motors

  • It reduces the starting current by first starting the motor in a star configuration and then switching to a delta configuration

  • It is commonly used in applications where the starting current of the motor is high, such as in large pumps or compressors

Q79. Symbols, types of pole, principle of rectifier and it's working.

Ans.

The question is about symbols, types of pole, principle of rectifier and its working.

  • Symbols used in electrical engineering include resistor, capacitor, inductor, etc.

  • Types of poles include north and south poles in magnets and positive and negative poles in batteries.

  • The principle of rectifier is to convert AC to DC.

  • Rectifiers can be half-wave or full-wave.

  • Working of rectifier involves the use of diodes to allow current flow in one direction only.

Q80. what is the size of transformer ?

Ans.

The size of a transformer can vary greatly depending on its intended use and power capacity.

  • The size of a transformer is typically measured in kVA (kilovolt-amperes) or MVA (megavolt-amperes).

  • Transformers used in residential settings can range from 5-50 kVA.

  • Transformers used in industrial settings can range from 500 kVA to over 100 MVA.

  • The physical size of a transformer can also vary greatly depending on its power capacity and cooling requirements.

Q81. Introduce yourself What is ic and ec engine What is laminar flow Value for laminar flow

Ans.

I am a mechanical engineer with expertise in IC and EC engines, laminar flow, and its values.

  • IC engine stands for Internal Combustion engine, which generates power by burning fuel inside the engine.

  • EC engine stands for External Combustion engine, which generates power by burning fuel outside the engine.

  • Laminar flow is a smooth, orderly flow of fluid in parallel layers with little to no mixing between layers.

  • The value for laminar flow is characterized by a low Reynolds number,...read more

Q82. What do you know about congruex

Ans.

Congruex is a telecommunications engineering and consulting firm.

  • Provides services such as network design, project management, and site acquisition

  • Works with major telecom companies like AT&T and Verizon

  • Has offices in multiple locations across the United States

Q83. What is canopy and why it provides.

Ans.

Canopy is the uppermost layer of vegetation in a forest or ecosystem that provides various benefits.

  • Canopy refers to the highest layer of vegetation in a forest or ecosystem.

  • It consists of the tops of trees and other tall plants that form a continuous cover.

  • The canopy provides several important functions:

  • - It provides shade and shelter for plants and animals living beneath it.

  • - It helps regulate temperature and humidity levels in the ecosystem.

  • - It intercepts and filters sunl...read more

Q84. How to handle field field technician

Ans.

Field technicians should be managed with clear communication, proper training, and regular feedback.

  • Establish clear expectations and goals for the technician

  • Provide thorough training and resources to ensure they have the necessary skills and knowledge

  • Communicate regularly to provide feedback and address any issues

  • Encourage open communication and collaboration between the technician and other team members

  • Recognize and reward good performance to motivate and retain the technici...read more

Q85. Is code 1200 for billing purpose

Ans.

Code 1200 is not specifically for billing purposes.

  • Code 1200 is typically used in reference to a specific task or action, not billing.

  • It could be related to a specific product, service, or process within a company.

  • For example, code 1200 might indicate a specific troubleshooting step in a technical manual.

Q86. Types of switchgear and basic knowledge of sweet operation.

Ans.

Switchgear types include air-insulated, gas-insulated, and hybrid switchgear. Basic operation involves controlling electrical power flow.

  • Air-insulated switchgear uses air as the insulation medium

  • Gas-insulated switchgear uses sulfur hexafluoride (SF6) gas as the insulation medium

  • Hybrid switchgear combines air-insulated and gas-insulated switchgear

  • Switchgear operates by controlling the flow of electrical power

  • Switchgear can be used to protect electrical equipment from damage

Q87. How to identify a worn screw element ?

Ans.

A worn screw element can be identified by examining for signs of wear and tear, such as chipping, cracking, or deformation.

  • Inspect the screw element for any visible signs of chipping or cracking

  • Check for any deformation or warping of the screw element

  • Look for excessive wear on the threads of the screw element

  • Listen for any unusual noises during operation, which may indicate a worn screw element

  • Monitor the performance of the equipment to see if there is a decrease in efficienc...read more

Q88. How to overhaul oil stop check valve?

Ans.

To overhaul an oil stop check valve, follow these steps:

  • 1. Shut off the oil supply and relieve any pressure in the system.

  • 2. Remove the valve from the pipeline using appropriate tools.

  • 3. Disassemble the valve carefully, noting the position of each component.

  • 4. Clean all parts thoroughly to remove any debris or buildup.

  • 5. Inspect all components for wear or damage and replace any faulty parts.

  • 6. Reassemble the valve in the correct order and position.

  • 7. Test the valve for proper...read more

Q89. How to troubleshoot over heating issue ?

Ans.

To troubleshoot overheating issue, check for dust buildup, ensure proper ventilation, monitor CPU usage, and consider upgrading cooling system.

  • Check for dust buildup in the computer's fans and vents

  • Ensure proper ventilation around the computer

  • Monitor CPU usage to identify any processes causing excessive heat

  • Consider upgrading the cooling system with better fans or a liquid cooling system

Q90. Rate analysis of each items of construction

Ans.

Rate analysis of each item of construction involves determining the cost of materials, labor, and equipment for each construction activity.

  • Rate analysis helps in estimating the total cost of a construction project.

  • It involves breaking down the project into various activities and determining the cost of each activity.

  • Factors considered in rate analysis include material costs, labor costs, equipment costs, and overhead costs.

  • Rate analysis helps in comparing different constructi...read more

Q91. What are the classes of DI PIPE?

Ans.

DI PIPE stands for Ductile Iron Pipe. The classes of DI PIPE are based on the pressure rating and thickness of the pipe.

  • DI PIPE Class 50 has a minimum thickness of 50mm and is suitable for low-pressure applications.

  • DI PIPE Class 100 has a minimum thickness of 100mm and is suitable for medium-pressure applications.

  • DI PIPE Class 150 has a minimum thickness of 150mm and is suitable for high-pressure applications.

  • DI PIPE Class 200 has a minimum thickness of 200mm and is suitable ...read more

Q92. What is the water cement ratio in m20 concrete.

Ans.

The water cement ratio in M20 concrete is typically 0.45.

  • The water cement ratio in M20 concrete is usually 0.45.

  • It is important to maintain the correct water cement ratio to ensure the strength and durability of the concrete.

  • Excess water can weaken the concrete while too little water can make it difficult to work with.

  • For M20 grade concrete, the mix proportion is 1:1.5:3 (cement:sand:aggregate) and the water cement ratio is 0.45.

Q93. What do you do when cpu not getting power.

Ans.

Check power source, connections, power supply unit, and motherboard for issues.

  • Check if the power source is working properly

  • Ensure all connections are secure and not loose

  • Check the power supply unit for any faults

  • Inspect the motherboard for any damage or issues

Q94. What do you do when monitor not getting display.

Ans.

Check connections, restart computer and monitor, test with another monitor.

  • Check if monitor is properly connected to computer and power source.

  • Restart computer and monitor to see if display comes back.

  • Test with another monitor to determine if issue is with monitor or computer.

  • Check monitor settings and cables for any issues.

Q95. What is RRU ?

Ans.

RRU stands for Remote Radio Unit, a component of a base station used in wireless communication networks.

  • RRU is responsible for transmitting and receiving radio signals to and from the antenna.

  • It is usually located at the top of a cell tower or on a rooftop.

  • RRUs are used in technologies such as 4G LTE and 5G.

  • They are designed to be compact and energy-efficient.

  • RRUs can be easily replaced or upgraded without affecting the rest of the base station.

  • Examples of RRU manufacturers i...read more

Q96. Tell about building coloum and beam size

Ans.

Column and beam sizes are determined by the load they need to support and the span they need to cover.

  • The size of the column and beam is determined by the load they need to support and the span they need to cover.

  • The material used for the column and beam also affects their size.

  • The size of the column and beam can be calculated using structural engineering software.

  • For example, a 20-foot span with a load of 10,000 pounds may require a 12x12 inch column and a 10x20 inch beam.

Q97. Describe Transmission line parameters

Ans.

Transmission line parameters are characteristics that define the behavior of electrical signals traveling through a transmission line.

  • Characteristics include resistance, inductance, capacitance, and conductance

  • Resistance is the opposition to the flow of current

  • Inductance is the ability to store energy in a magnetic field

  • Capacitance is the ability to store energy in an electric field

  • Conductance is the ability to conduct current

  • Parameters affect signal propagation, impedance ma...read more

Q98. Do you login weblct ?

Ans.

Yes, I am familiar with weblct login.

  • I have experience logging into weblct for various projects.

  • I am comfortable navigating the weblct interface.

  • I am able to troubleshoot any login issues that may arise.

Q99. What is the actual fiber loss

Ans.

Actual fiber loss refers to the amount of signal attenuation that occurs in a fiber optic cable.

  • Fiber loss is measured in decibels per kilometer (dB/km)

  • Factors that contribute to fiber loss include scattering, absorption, and bending

  • The type of fiber, wavelength of light, and length of the cable also affect fiber loss

  • Fiber loss can be minimized through proper installation and maintenance

  • Typical fiber loss ranges from 0.2 dB/km to 0.5 dB/km

Q100. What is types of Blow down?

Ans.

Types of blow down include intermittent blow down and continuous blow down.

  • Intermittent blow down involves manual opening of a valve to release boiler water periodically.

  • Continuous blow down involves a continuous flow of water from the boiler to remove impurities.

  • Blow down helps maintain boiler efficiency and prevent build-up of harmful substances.

  • Examples of impurities removed during blow down include dissolved solids and sludge.

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