20+ TCS Interview Questions and Answers

The speed of a turbine is controlled by adjusting the flow of steam or water.

• The speed of a turbine can be controlled by adjusting the flow rate of the working fluid, such as steam or water.

• By increasing or decreasing the flow rate, the turbine's speed can be increased or decreased accordingly.

• This control mechanism allows for efficient operation and optimization of power generation systems.

• For example, in a steam turbine, the speed can be controlled by adjusting the steam fl...read more

The number of windings used in an auto transformer can vary depending on the specific application.

• Auto transformers can have a single winding or multiple windings.

• In a single winding auto transformer, the primary and secondary windings are connected together.

• In a multiple winding auto transformer, there are separate primary and secondary windings.

• The number of windings determines the voltage transformation ratio of the auto transformer.

• For example, a step-down auto transforme...read more

There are several types of brick tests and corresponding IS codes.

• Compressive strength test (IS code: IS 3495 Part 1)

• Water absorption test (IS code: IS 3495 Part 2)

• Efflorescence test (IS code: IS 3495 Part 3)

• Dimensional tolerance test (IS code: IS 3495 Part 4)

• Warpage test (IS code: IS 3495 Part 5)

• Soundness test (IS code: IS 3495 Part 6)

• Density test (IS code: IS 3495 Part 7)

A potential transformer is a type of instrument transformer used to measure voltage in high voltage systems.

• It is also known as a voltage transformer.

• It steps down the voltage to a lower level suitable for measurement or protection.

• Potential transformers are commonly used in power systems for metering, relaying, and control purposes.

• They provide accurate voltage measurements and isolate the measuring instruments from high voltage circuits.

• For example, in a power distribution ...read more

Bulk density refers to the mass of a substance per unit volume, excluding any voids or air spaces.

• It is a measure of how densely packed the particles or molecules are in a given volume.

• Bulk density is commonly used in industries such as mining, agriculture, and pharmaceuticals.

• It is calculated by dividing the mass of the substance by its volume.

• For example, the bulk density of a soil sample can indicate its compaction and fertility.

• In pharmaceuticals, bulk density is importan...read more

Valves used in industry include gate, globe, ball, butterfly, diaphragm, and check valves.

• Gate valves are used for on/off control of flow

• Globe valves are used for regulating flow

• Ball valves are used for quick shut-off

• Butterfly valves are used for low-pressure applications

• Diaphragm valves are used for corrosive or abrasive fluids

• Check valves are used to prevent backflow

I would assess the situation, gather information, and consult with experts if necessary.

• Conduct a thorough assessment of the sites and identify potential risks

• Gather information from relevant sources such as manuals, blueprints, and previous incident reports

• Consult with experts such as engineers or technicians if necessary

• Develop a plan of action based on the assessment and information gathered

• Implement the plan and regularly monitor the sites for any changes or issues

Renewable energy is energy that is generated from natural resources that are replenished over time.

• Renewable energy sources include solar, wind, hydro, geothermal, and biomass

• Renewable energy is sustainable and does not deplete natural resources

• Renewable energy helps reduce greenhouse gas emissions and combat climate change

• Renewable energy technologies are becoming more efficient and cost-effective

• Examples of renewable energy projects include solar farms, wind turbines, and h...read more

Target mean strength is the desired strength level of a product or material.

• It is the strength level that a product or material is designed to meet or exceed.

• It is determined based on the intended use and expected stresses on the product or material.

• It is often used in quality control to ensure that products meet the desired strength level.

• For example, the target mean strength of a steel beam used in construction may be determined based on the expected load it will bear.

• The t...read more

Break Horse Power (BHP) is the power output of an engine measured at the output shaft without any power losses.

• BHP is the actual power delivered by an engine to do useful work

• It is measured at the output shaft of the engine

• It does not include any power losses due to friction, heat, or other factors

• BHP is often used to compare the power output of different engines

• It is calculated using the formula: BHP = (Torque x RPM) / 5252

The colour code of structural in NTPC is used to identify different types of structures and their purposes.

• The colour code is used for safety and identification purposes.

• Different colours are assigned to different types of structures.

• For example, red may be used for fire protection systems, yellow for electrical systems, and green for safety equipment.

• The colour code helps in quickly identifying the purpose of a structure and ensures proper maintenance and operation.

MCB stands for Miniature Circuit Breaker.

• MCB is an electrical switch that automatically protects an electrical circuit from damage caused by overload or short circuit.

• It is a type of circuit breaker that is commonly used in residential and commercial buildings.

• MCBs are designed to trip and disconnect the circuit when excessive current flows through it, preventing damage to the electrical equipment and wiring.

• They are compact in size and provide better protection compared to t...read more

SWG stands for Standard Wire Gauge.

• SWG is a standardized system for measuring the diameter of wire.

• It is commonly used in electrical and electronic industries.

• SWG is also known as British Standard Wire Gauge (BSWG).

Different types of cable trays include ladder, perforated, solid bottom, wire mesh, and trough.

• Ladder cable trays have horizontal cross members resembling a ladder.

• Perforated cable trays have small holes for ventilation and drainage.

• Solid bottom cable trays have a solid base for supporting cables.

• Wire mesh cable trays have a grid-like structure for easy cable installation.

• Trough cable trays have a U-shaped design for containing cables.

Anticarsia gemmatalis, also known as the velvetbean caterpillar, is a common pest in agriculture.

• Anticarsia gemmatalis is a species of moth in the family Erebidae.

• It is a major pest of soybean crops, feeding on the leaves and causing significant damage.

• Control measures for velvetbean caterpillars include biological control agents, insecticides, and crop rotation.

• Monitoring for early signs of infestation can help prevent widespread damage to crops.

General Arrangement drawings show the overall layout of electrical systems in a building or structure.

• GA drawings provide an overview of the entire electrical system layout

• They include details such as equipment locations, cable routing, and connection points

• These drawings are essential for understanding the overall design and installation of electrical systems

• Examples of GA drawings include floor plans with electrical equipment locations marked, cable tray layouts, and panel ...read more

FGD projects refer to Flue Gas Desulfurization projects, which are aimed at reducing sulfur dioxide emissions from power plants and industrial processes.

• FGD projects involve the installation of equipment and systems to remove sulfur dioxide from flue gas emissions.

• The main objective of FGD projects is to reduce air pollution and comply with environmental regulations.

• Various technologies are used in FGD projects, including wet scrubbers, dry scrubbers, and spray dry scrubbers....read more

PG test stands for Pressure Gauge test.

• PG test is a method used to measure and verify the pressure of a system or component.

• It involves using a pressure gauge to measure the pressure and compare it to the desired or specified value.

• PG tests are commonly performed in industries such as manufacturing, oil and gas, and HVAC.

• The results of the PG test help ensure that the system or component is operating within the required pressure range.

• For example, in the automotive industry, ...read more

Operations in CHP can be handled by ensuring proper maintenance, monitoring, and control of equipment and processes.

• Regular maintenance of equipment to prevent breakdowns and ensure optimal performance

• Continuous monitoring of processes to identify and address any issues

• Effective control of fuel and energy consumption to optimize efficiency

• Proper training and supervision of staff to ensure safe and efficient operations

• Implementation of safety protocols and emergency response p...read more

The rule of cable laying involves proper planning, routing, securing, and labeling of cables to ensure safety and efficiency.

• Plan the cable routes to avoid interference with other systems or equipment.

• Secure cables properly to prevent damage or accidents.

• Label cables clearly for easy identification and maintenance.

• Follow local regulations and standards for cable laying practices.

• Consider factors like cable length, bend radius, and environmental conditions.

• Use cable trays, con...read more

Types of boilers include fire tube boilers, water tube boilers, and electric boilers.

• Fire tube boilers: Have hot gases passing through tubes surrounded by water. Examples include Scotch marine and vertical fire tube boilers.

• Water tube boilers: Have water flowing through tubes surrounded by hot gases. Examples include Babcock and Wilcox and Stirling boilers.

• Electric boilers: Use electricity to generate heat instead of burning fuel. Examples include electrode and resistance boi...read more