100+ Technical Assistant Interview Questions and Answers

No, I am not an authorized person in NPCIL.

• I have not been granted any authorization by NPCIL.

• I do not hold any position or role in NPCIL.

• I am not affiliated with NPCIL in any way.

The number of working days and the day of posting vary depending on the specific job position and company policies.

• Working days can vary from Monday to Friday, or include weekends depending on the job requirements.

• The day of posting can also vary, with some positions posting job listings on specific days of the week.

• It is important to check the job listing or contact the company for specific details on working days and posting days.

A linked list is a data structure where each element points to the next element in the sequence.

• Each element in a linked list is called a node.

• Nodes contain data and a reference (pointer) to the next node in the sequence.

• Linked lists can be singly linked (each node points to the next) or doubly linked (each node points to the next and previous).

• Example: 1 -> 2 -> 3 -> 4 -> null

The responsibility of an operator is to operate and maintain equipment or machinery in a safe and efficient manner.

• Operate equipment or machinery according to instructions and safety guidelines

• Perform routine maintenance and inspections on equipment

• Troubleshoot and resolve any issues that arise during operation

• Keep accurate records of equipment usage and maintenance

• Communicate effectively with team members and supervisors

Distance protection relay is a type of protective relay used in power systems to protect transmission lines from faults.

• Distance protection relay operates based on the impedance seen by the relay from the fault point.

• It measures the distance to the fault by comparing the impedance to a pre-set value.

• It is commonly used in high voltage transmission lines to quickly isolate faults and prevent damage to the system.

• Examples of distance protection relays include impedance relays a...read more

Yes, I have knowledge of automation.

• I have experience with scripting languages such as Python and Bash

• I have worked with automation tools like Selenium and Jenkins

• I am familiar with DevOps practices and continuous integration/continuous deployment (CI/CD)

• I have implemented automated testing for software applications

Deviation process involves identifying, documenting, investigating, and resolving discrepancies from standard procedures.

• Identify the deviation from standard procedures or specifications

• Document the details of the deviation including date, time, location, and individuals involved

• Investigate the root cause of the deviation

• Implement corrective actions to prevent future deviations

• Review and approve the deviation documentation

• Examples: equipment malfunction, incorrect procedure f...read more

Slump test is used to measure the consistency of fresh concrete before it sets.

• It measures the workability of concrete.

• It helps to determine the water-cement ratio.

• It is a simple and quick test that can be performed on-site.

• The test involves filling a slump cone with concrete and measuring the slump.

• The slump value indicates the amount of deformation or settling of the concrete.

• The test is used to ensure that the concrete has the desired consistency for the intended use.

Process improvements refer to the actions taken to enhance efficiency, quality, and productivity within a workflow or system.

• Identifying bottlenecks and inefficiencies in current processes

• Implementing new technologies or tools to streamline operations

• Training employees on best practices and continuous improvement

• Regularly reviewing and analyzing data to make informed decisions

• Seeking feedback from stakeholders to identify areas for improvement

Nominal mix is a mix of fixed proportions of cement, sand, and aggregate. Design mix is a mix of specified proportions of cement, sand, and aggregate.

• Nominal mix is used for small construction projects where quality control is not a major concern.

• Design mix is used for large construction projects where quality control is important.

• Nominal mix has a fixed ratio of ingredients, usually 1:2:4 or 1:3:6.

• Design mix has a specified ratio of ingredients based on the strength required...read more

PLC stands for Programmable Logic Controller. It is a digital computer used for automation of electromechanical processes.

• PLC is used in industrial automation to control machinery and processes.

• It is programmed using ladder logic or other programming languages.

• PLC can be used in various applications such as manufacturing, transportation, and energy.

• Examples of PLC brands include Siemens, Allen-Bradley, and Mitsubishi.

• PLC can be connected to sensors and other devices to monito...read more

Protocol is a set of rules and guidelines that govern the communication between devices or systems.

• Protocols ensure that devices or systems can communicate with each other effectively and efficiently.

• They define the format, timing, sequencing, and error checking of messages exchanged between devices or systems.

• Examples of protocols include TCP/IP, HTTP, FTP, and SMTP.

• Protocols can be implemented in hardware, software, or a combination of both.

• Different protocols are used for ...read more

2 stock and 4 stock are types of engines used in motorcycles.

• 2 stock engines have a power stroke every two strokes of the piston, while 4 stock engines have a power stroke every four strokes.

• 2 stock engines are simpler and lighter, but less fuel efficient and produce more emissions compared to 4 stock engines.

• Examples of motorcycles with 2 stock engines include older models like Yamaha RD350, while examples of motorcycles with 4 stock engines include modern bikes like Honda C...read more

The C 300 MACHINE is a type of industrial machine used for a specific purpose.

• The C 300 MACHINE is commonly used in manufacturing processes.

• It is known for its efficiency and precision in carrying out tasks.

• Examples of tasks the C 300 MACHINE may perform include cutting, drilling, or shaping materials.

I built my network through a combination of online and offline networking.

• Attending industry events and conferences to meet new people and learn about new technologies.

• Joining professional organizations and attending their meetings and events.

• Connecting with people on LinkedIn and other social media platforms.

• Reaching out to former colleagues and classmates to stay in touch and explore potential opportunities.

• Volunteering for community events and projects to meet new people a...read more

Automation refers to the use of technology to perform tasks without human intervention.

• Automation can increase efficiency and productivity

• Examples of automation include robotic process automation, chatbots, and self-driving cars

• Automation can also lead to job displacement and ethical concerns

• Automation requires careful planning and implementation to ensure success

Looping in SQL is a way to repeatedly execute a block of code based on a condition.

• Looping is achieved using control statements like WHILE, FOR, and CURSOR.

• It is used to iterate through a set of records or perform a specific task multiple times.

• Looping can be used to update, delete, or insert records in a table.

• Example: WHILE loop to print numbers from 1 to 10.

• Example: FOR loop to iterate through a cursor and perform a task for each record.

Layers can be selected by using the selection tool in graphic design software.

• Use the selection tool to click on the desired layer

• Hold down the shift key to select multiple layers

• Use the layers panel to easily identify and select specific layers

The length of travel possible depends on various factors such as mode of transportation, distance, time, and resources available.

• The length of travel possible can vary greatly depending on the mode of transportation. For example, traveling by car may allow for longer distances compared to walking.

• The distance one can travel is also influenced by factors such as fuel availability, road conditions, and weather.

• Time constraints can also impact the length of travel possible. For ...read more

Archaeology is the study of human history and prehistory through the excavation and analysis of artifacts and other physical remains.

• Archaeology involves the study of past human cultures and societies through the analysis of material remains such as artifacts, structures, and ecofacts.

• Archaeologists use various techniques such as excavation, surveying, and dating methods to uncover and interpret the past.

• Archaeology can provide insights into ancient civilizations, their daily...read more

A GIS substation is a high voltage substation that uses gas-insulated switchgear for electrical insulation.

• Uses gas-insulated switchgear for electrical insulation

• Compact design compared to traditional air-insulated substations

• Requires less maintenance

• Provides higher reliability and safety

• Commonly used in urban areas with space constraints

Holding current is the minimum current required to keep a device or component in the on state.

• Holding current is essential for maintaining the operation of devices like relays and transistors.

• It ensures that the device remains in the on state even after the triggering current is removed.

• For example, in a relay, holding current is the current needed to keep the relay contacts closed.

• Holding current is typically lower than the operating current of the device.

Latching current is the minimum current required to keep a device in the ON state after it has been turned on.

• Latching current is essential for maintaining the ON state of a device.

• It is typically higher than the holding current required to initially turn on the device.

• Latching current is crucial in devices like relays and latching solenoids.

• If the latching current is not met, the device may switch off unexpectedly.

Armature reaction is the effect of magnetic field produced by armature current on the main magnetic field in a DC machine.

• Armature reaction occurs in DC machines when current flows through the armature winding, creating a magnetic field.

• This magnetic field interacts with the main magnetic field, causing distortion and shifting of the neutral plane.

• Armature reaction affects the commutation process and can lead to sparking at the brushes.

• Compensating windings or interpoles are ...read more

An induction generator is a type of asynchronous generator that produces electrical power by induction.

• Induction generators are commonly used in wind turbines to convert mechanical energy into electrical energy.

• They do not require a separate excitation system like synchronous generators.

• Induction generators operate at a slightly sub-synchronous speed to generate power.

• They are self-starting and do not require external power to initiate generation.

• Induction generators are ofte...read more

An encapsulation machine schematic diagram shows the layout and components of the machine used to encapsulate products.

• The diagram typically includes components such as hopper, dosing disc, tamping pins, encapsulation chamber, and ejection system.

• The hopper is where the raw material is loaded, the dosing disc measures the amount of material, tamping pins compress the material, and the encapsulation chamber forms the capsules.

• The ejection system releases the finished capsules ...read more

Meghanalic gauge failure occurs when the meghanalic gauge fails to accurately measure pressure due to mechanical issues or calibration errors.

• Meghanalic gauge failure can be caused by mechanical damage to the gauge, such as a broken or bent needle.

• Calibration errors, such as incorrect zeroing or improper adjustment, can also lead to meghanalic gauge failure.

• Inaccurate readings from the gauge can result in incorrect pressure measurements, leading to potential safety hazards.

• Re...read more

HMI stands for Human Machine Interface, which is a user interface that connects a person to a machine, system, or device.

• HMI stands for Human Machine Interface

• It is a user interface that allows interaction between humans and machines

• Examples include touchscreens, keyboards, and control panels

PLC stands for Programmable Logic Controller.

• PLC is a digital computer used for automation of electromechanical processes.

• It is commonly used in industries for controlling machinery and processes.

• PLCs are programmed using specialized software to perform specific tasks.

• Examples of PLC brands include Siemens, Allen-Bradley, and Mitsubishi.

Electrical machine is my favorite subject because of its practical applications in various industries.

• I am fascinated by the way electrical machines work and how they can be used to power different devices and equipment.

• I enjoy learning about the different types of electrical machines such as motors, generators, transformers, and their applications in industries like manufacturing, transportation, and energy production.

• I have experience working with electrical machines during...read more

ESD stands for Electrostatic Discharge.

• ESD is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown.

• It can damage electronic components and integrated circuits.

• ESD protection measures include using antistatic wrist straps, mats, and packaging materials.

• Examples of ESD-sensitive devices are computer chips, circuit boards, and hard drives.

Productivity is the measure of efficiency in completing tasks or achieving goals.

• Productivity is often measured by the amount of output produced per unit of input (e.g. time, resources, etc.)

• Improving productivity can involve streamlining processes, setting goals, and eliminating distractions.

• Examples of productivity tools include project management software, time tracking apps, and task lists.

A thread mill is a cutting tool used to create threads on a workpiece.

• The tool rotates while moving along the workpiece to create threads.

• It can be used on a variety of materials including metal, plastic, and wood.

• Thread mills can create both internal and external threads.

• They are commonly used in manufacturing and machining processes.

• Thread mills can be single or multiple flute and come in various sizes and shapes.

Validations are checks performed on data to ensure its accuracy, consistency, and integrity.

• Validations are used to verify that data meets certain criteria or rules.

• They are commonly used in software development to ensure data quality.

• Examples of validations include checking for required fields, data types, and ranges.

• Validations can also be used to prevent invalid or malicious input.

• They help maintain data integrity and improve system reliability.

Anodizing is an electrochemical process that increases the thickness of the natural oxide layer on the surface of metal parts.

• Anodizing is commonly used to improve corrosion resistance, increase surface hardness, and provide better adhesion for paint primers and glues.

• The process involves immersing the metal part in an electrolyte solution and passing an electric current through it, which causes oxide to form on the surface.

• Different types of anodizing include sulfuric acid a...read more

Metallurgy is the study of metals, their properties, extraction, processing, and applications.

• Metallurgy involves studying the physical and chemical behavior of metallic elements.

• It includes processes like extraction of metals from ores, refining, alloying, and shaping.

• Metallurgists work on improving the properties of metals for various applications.

• Examples of metallurgical processes include smelting, casting, heat treatment, and welding.

Least count of an instrument refers to the smallest measurement that can be made with the instrument.

• Least count is determined by the smallest division on the scale of the instrument.

• It is important to consider the least count when taking measurements to ensure accuracy.

• For example, a ruler with millimeter divisions has a least count of 1 mm.

• Another example is a digital caliper with a least count of 0.01 mm.

To add one in a linked list, create a new node with the value 1 and add it to the end of the list.

• Create a new node with the value 1

• Traverse the linked list to reach the last node

• Set the next pointer of the last node to the new node

Different types of lubricants include oils, greases, solid lubricants, and synthetic lubricants.

• Oils: Examples include motor oil, hydraulic oil, and gear oil.

• Greases: Examples include lithium grease, silicone grease, and white lithium grease.

• Solid lubricants: Examples include graphite, molybdenum disulfide, and PTFE.

• Synthetic lubricants: Examples include synthetic motor oil, synthetic grease, and synthetic gear oil.

Dynamic programming is a method for solving complex problems by breaking them down into simpler subproblems and storing the solutions to avoid redundant calculations.

• Dynamic programming involves breaking down a problem into smaller subproblems and solving each subproblem only once.

• It is typically used for optimization problems where the goal is to find the best solution.

• Examples include the Fibonacci sequence, shortest path problems, and knapsack problems.

The server was down due to a power outage.

• Power outage caused the server to shut down.

• The backup generator failed to start.

• There was a problem with the power supply unit.

• The server room experienced a power surge.

• The power cable was unplugged accidentally.

A trigger is a special kind of stored procedure that is automatically executed when certain events occur in a database.

• Triggers can be used to enforce business rules, perform data validation, or automate tasks.

• Examples of trigger events include INSERT, UPDATE, and DELETE operations on a table.

• Triggers can be defined to execute before or after the triggering event.

cGMP stands for current Good Manufacturing Practice, a set of regulations enforced by the FDA to ensure the quality and safety of pharmaceutical products.

• cGMP regulations are designed to ensure that pharmaceutical products are consistently produced and controlled according to quality standards.

• These regulations cover all aspects of production, from the raw materials used to the final product packaging.

• Examples of cGMP requirements include proper documentation, employee traini...read more

Creep-age is the gradual deformation or elongation of a material under constant stress over time.

• Creep-age occurs in materials subjected to constant stress at elevated temperatures.

• It is a time-dependent phenomenon where the material deforms slowly over time.

• Creep-age can lead to failure of components in high-temperature applications.

• Examples include metal components in a boiler or turbine experiencing creep-age over time.

Anodizing is an electrochemical process that forms a protective oxide layer on metal surfaces.

• Metal part is immersed in an electrolyte solution

• Electric current is passed through the solution

• Oxidation of the metal surface creates a durable and corrosion-resistant layer

• Commonly used on aluminum for increased durability and aesthetics

Setting up a laboratory involves planning, equipment procurement, layout design, and safety measures.

• Plan the layout of the laboratory to ensure efficient workflow

• Procure necessary equipment and supplies for experiments

• Implement safety measures such as proper ventilation and storage of hazardous materials

• Train staff on proper laboratory procedures and protocols

• Regularly maintain and calibrate equipment to ensure accuracy

• Keep detailed records of experiments and results for fut...read more

Yes, I have a strong interest in metallurgy due to its applications in various industries and its role in shaping the modern world.

• Fascinated by the properties of different metals and alloys

• Interested in understanding the process of extracting metals from ores

• Curious about the advancements in metallurgical techniques and technologies

• Passionate about exploring the role of metallurgy in aerospace and automotive industries