10+ NTPC Executive Trainee Interview Questions and Answers

Constructing a dam in Mizoram: expected problems and logistics.

• Environmental impact assessment

• Land acquisition and compensation

• Design and engineering challenges

• Transportation of heavy equipment and materials

• Availability of skilled labor

• Power supply and communication infrastructure

• Community engagement and consultation

• Cost and funding sources

Steel structures are preferred in situations where high strength, durability, and resistance to environmental factors are required.

• In high-rise buildings and skyscrapers

• In bridges and other transportation infrastructure

• In industrial facilities and warehouses

• In offshore structures and oil rigs

• In areas with high seismic activity or extreme weather conditions

• When quick construction is required

• When cost-effectiveness is a priority

Hydro-power plants use synchronous generators.

• Synchronous generators are commonly used in hydro-power plants.

• These generators are connected to turbines which convert the kinetic energy of water into mechanical energy.

• The mechanical energy is then converted into electrical energy by the synchronous generators.

• The generators are designed to operate at a constant speed to maintain the frequency of the electrical output.

• The size and capacity of the generators depend on the size a...read more

A green building is a sustainable and energy-efficient building that minimizes its impact on the environment.

• Green buildings use renewable energy sources like solar power

• They are designed to reduce energy consumption and waste production

• They use eco-friendly materials and technologies

• Examples include LEED-certified buildings and net-zero energy buildings

Footings of transmission tower support columns are subjected to vertical, horizontal, and moment loads. When the transmission line snaps, the load on the footing decreases.

• Vertical loads are due to the weight of the tower and the weight of the transmission line.

• Horizontal loads are due to wind pressure and unbalanced tension in the transmission line.

• Moment loads are due to the eccentricity of the vertical loads.

• When the transmission line snaps, the load on the footing decreas...read more

Insulation can be categorized into three types: thermal, acoustic, and electrical.

• Thermal insulation is used to reduce heat transfer between objects with different temperatures.

• Acoustic insulation is used to reduce sound transmission between spaces.

• Electrical insulation is used to prevent electric current from flowing through conductive materials.

• Examples of thermal insulation include fiberglass, foam board, and cellulose.

• Examples of acoustic insulation include mineral wool, ...read more

My high CPI is a result of my consistent hard work and dedication towards my academics.

• I have always been passionate about learning and have consistently put in efforts to excel in my academics.

• I have maintained a disciplined study routine and have always been proactive in seeking help from my teachers and peers.

• I have also actively participated in extracurricular activities, which have helped me develop a well-rounded personality.

• My high CPI is a reflection of my commitment ...read more

Turbo generators are machines that convert mechanical energy into electrical energy using a turbine and a generator.

• They are commonly used in power plants to generate electricity.

• The turbine is driven by steam or gas, which in turn rotates the generator.

• They can produce large amounts of electricity quickly and efficiently.

• Examples include gas turbines, steam turbines, and hydro turbines.

• They are often used in conjunction with other power generation methods, such as solar or w...read more

Buchholz relay is a protective device used in oil-filled transformers to detect and prevent faults.

• It is a gas actuated relay that detects the presence of gas in the oil of a transformer.

• It is used to protect the transformer from faults such as overheating, overloading, and short circuits.

• It can also be used to detect minor faults that may lead to major faults if left unattended.

• The relay operates by tripping the transformer's circuit breaker when gas is detected in the oil.

• I...read more