30+ TCS Interview Questions and Answers

RCCB is a Residual Current Circuit Breaker that trips when it detects a leakage current, while MCB is a Miniature Circuit Breaker that trips when there is an overload or short circuit.

• RCCB protects against electric shock by detecting imbalance in current flow, commonly used in wet areas like bathrooms.

• MCB protects against overloads and short circuits, commonly used in residential and commercial buildings.

• RCCB has a sensitivity to detect small leakage currents, while MCB has a...read more

Yes, I have knowledge of hydraulic circuits.

• I have experience in designing and troubleshooting hydraulic circuits

• I am familiar with hydraulic components such as pumps, valves, and actuators

• I have worked with hydraulic systems in various industries including manufacturing and construction

• I understand the principles of fluid mechanics and how they apply to hydraulic systems

Vccb stands for Vacuum Circuit Breaker. It works on the principle of extinguishing the arc in a vacuum environment.

• VCCB uses a vacuum as the arc quenching medium instead of air or oil.

• When the contacts of the breaker open, the arc is drawn into the vacuum and extinguished.

• This method ensures faster arc extinction and reduces the risk of fire hazards.

• VCCBs are commonly used in high voltage applications where quick and reliable arc extinction is crucial.

Maintenance work with planning involves creating a schedule and strategy for upkeep and repairs.

• Developing a maintenance plan based on equipment needs and usage

• Scheduling regular inspections and preventative maintenance

• Coordinating with other departments to minimize downtime

• Tracking maintenance history and identifying areas for improvement

• Using data analysis to optimize maintenance processes

• Example: Creating a weekly schedule for equipment checks and repairs

• Example: Implement...read more

Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

• Transformers have two coils of wire, known as primary and secondary coils.

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

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy.

• Transformers can step up or step down voltage levels depending on the number of turns...read more

Miniature Circuit Breakers (MCBs) and relays are commonly used in electrical systems for protection and control.

• MCBs are used to protect electrical circuits from overloads and short circuits by automatically switching off the circuit when a fault is detected.

• Relays are used to control the operation of electrical circuits by opening or closing contacts based on input signals.

• Common types of MCBs include single-pole, double-pole, and triple-pole configurations.

• Examples of relay...read more

The stress-strain diagram shows the relationship between stress and strain in a material.

• Stress is the force applied per unit area, while strain is the deformation caused by the stress.

• The diagram typically shows a linear elastic region, followed by a plastic region where the material deforms permanently.

• The ultimate strength and fracture point of the material can also be determined from the diagram.

• Examples of materials that exhibit different stress-strain behaviors include ...read more

Mechanical equipments are devices that use mechanical power to perform a specific task.

• Mechanical equipments are used in various industries such as manufacturing, construction, and transportation.

• Examples of mechanical equipments include pumps, motors, engines, and turbines.

• They require regular maintenance and repair to ensure optimal performance and prevent breakdowns.

• Knowledge of mechanical principles and engineering is essential for understanding and working with mechanica...read more

I am a graduate engineer trainee with experience in CAD and 3D modeling. I have worked on various projects including designing mechanical parts and assemblies.

• My name is [Name] and I recently graduated with a degree in Mechanical Engineering.

• I have experience in using CAD software such as SolidWorks and AutoCAD.

• I have worked on various projects including designing mechanical parts and assemblies.

• I am familiar with reading and interpreting technical drawings and specifications...read more

The 1st law of thermodynamics states that energy cannot be created or destroyed, only transferred or converted.

• Energy is conserved in any process

• Energy can be transferred between systems or converted from one form to another

• The total energy of a closed system remains constant

• Example: When a ball is thrown in the air, the potential energy is converted to kinetic energy as it falls back down

Press tools are used in metalworking to cut, shape, or form metal sheets or components.

• Blanking tools - used to cut out a blank from a metal sheet

• Piercing tools - used to create holes in metal sheets

• Bending tools - used to bend metal sheets into desired shapes

• Forming tools - used to shape metal sheets into complex forms

• Drawing tools - used to draw metal sheets into cups or shells

A programming language is a set of instructions that enables a computer to perform specific tasks.

• Programming languages are used to write code that tells a computer what to do.

• They consist of syntax rules and commands that are understood by the computer.

• Examples include Java, C++, Python, and ABAP.

Control frame box is a device used in tool design to hold and position workpieces during machining operations.

• It is a fixture used to secure and position workpieces during machining

• It helps to ensure accuracy and consistency in the machining process

• Control frame boxes can be customized to fit specific workpieces and machining operations

• They are commonly used in industries such as aerospace and automotive

• Examples include drilling jigs, milling fixtures, and assembly fixtures

TQM pillars are the foundation of Total Quality Management. They are the key principles that guide the implementation of TQM.

• TQM has 8 pillars: customer focus, leadership, involvement of people, process approach, system approach to management, continual improvement, factual approach to decision making, and mutually beneficial supplier relationships

• Customer focus involves understanding and meeting customer needs and expectations

• Leadership involves creating a vision and values,...read more

FMEA is a systematic method for identifying and prioritizing potential failure modes in a process or product.

• FMEA stands for Failure Mode and Effects Analysis

• It involves identifying potential failure modes, their causes, and the effects of those failures

• Risk priority numbers (RPN) are calculated to prioritize the identified failure modes

• Actions are then taken to mitigate the highest priority failure modes

• Example: In software development, FMEA can be used to identify potential...read more

An engine is a machine that converts fuel into mechanical energy to power a vehicle or device. A tool is an instrument used to perform a specific task.

• An engine is a complex machine that converts fuel into mechanical energy to power a vehicle or device

• Tools are instruments used to perform specific tasks, such as a hammer for driving nails or a screwdriver for tightening screws

• Engines and tools are both essential components in many industries, including automotive, manufacturi...read more

Roll forming is a metal forming process where a continuous strip of metal is passed through sets of rolls to gradually shape the metal into a desired cross-section.

• Roll forming is a continuous bending operation used to produce long strips of uniform cross-sections.

• It is commonly used in the production of sheet metal products like roofing panels, gutters, and automotive parts.

• The process involves feeding the metal strip through a series of rolls that gradually shape the metal ...read more

A 3 phase induction motor is a type of AC motor that operates on three phases of alternating current to generate a rotating magnetic field.

• Operates on three phases of alternating current

• Generates a rotating magnetic field

• Commonly used in industrial applications

Golden rules of Accounting are basic principles that guide the process of recording financial transactions.

• There are three golden rules of accounting: Debit what comes in, Credit what goes out, Debit the receiver, Credit the giver, Debit expenses and losses, Credit income and gains.

• These rules help maintain the balance in the accounting equation: Assets = Liabilities + Equity.

• For example, when a company receives cash from a customer, it will debit the cash account (what comes...read more

Balance sheet is a financial statement that shows a company's assets, liabilities, and shareholders' equity at a specific point in time.

• Balance sheet provides a snapshot of a company's financial position

• It shows what a company owns (assets), owes (liabilities), and the amount invested by shareholders (equity)

• The formula for a balance sheet is Assets = Liabilities + Shareholders' Equity

• Examples of assets include cash, inventory, and property; liabilities include loans and acco...read more

OOP concepts in Java include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class B extends class A.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables with public getter and setter methods.

• Polymorphism: Ability of a method to do different things based on the object it is acting upon. Example: method overloading an...read more

IATF document and procedures are related to automotive industry quality standards.

• IATF 16949 is a standard for quality management systems in the automotive industry

• It is based on ISO 9001 and includes specific requirements for automotive sector

• Procedures include process control, risk management, and continuous improvement

• Documentation must comply with IATF requirements to ensure quality and consistency

Types of welding machines include MIG, TIG, stick, and flux-cored.

• MIG (Metal Inert Gas) welding uses a wire electrode and a shielding gas.

• TIG (Tungsten Inert Gas) welding uses a tungsten electrode and a separate filler material.

• Stick welding, also known as Shielded Metal Arc Welding (SMAW), uses a flux-coated electrode.

• Flux-cored welding uses a tubular wire filled with flux to protect the weld pool.

The least count of a vernier caliper is the smallest measurement that can be read on the scale.

• The least count is typically 0.02 mm or 0.001 inches on a standard vernier caliper.

• It is determined by the number of divisions on the main scale and the vernier scale.

• For example, if the main scale has 20 divisions and the vernier scale has 10 divisions, the least count would be 0.02 mm.

DC current flows in one direction constantly, while AC current changes direction periodically.

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

• DC current is commonly used in batteries and electronic devices, while AC current is used in homes and businesses for powering appliances.

• DC current is easier to convert to other forms of energy, while AC current is more efficient for long-distance power transmission.