Mahagenco Junior Mechanical Engineer Interview Questions, Process, and Tips

Thermal power plant generates electricity by converting heat energy into electrical energy.

• Fuel is burned to produce heat

• Heat is used to produce steam

• Steam drives the turbine

• Turbine drives the generator

• Generator produces electricity

• Examples: coal-fired power plant, gas-fired power plant, nuclear power plant

CHP stands for Combined Heat and Power, a system that generates electricity and heat simultaneously.

• CHP is a highly efficient energy system that captures and utilizes waste heat produced during electricity generation.

• It can be used in various settings such as hospitals, universities, and industrial facilities.

• CHP reduces energy costs and carbon emissions by up to 30% compared to traditional energy systems.

• Examples of C...read more

Boilers are classified into different types based on their design, fuel type, and usage.

• Fire-tube boilers

• Water-tube boilers

• Electric boilers

• Gas boilers

• Oil boilers

• Combination boilers

• Condensing boilers

• Solid fuel boilers

Conventional power plants use fossil fuels to generate electricity while non-conventional power plants use renewable sources.

• Conventional power plants burn fossil fuels like coal, oil, and natural gas to generate electricity

• Non-conventional power plants use renewable sources like solar, wind, hydro, and geothermal energy

• Conventional power plants are cheaper to build and operate but contribute to pollution and climate c...read more

Co-Generation plants are power plants that produce both electricity and useful heat simultaneously.

• Co-Generation plants are also known as Combined Heat and Power (CHP) plants.

• They use a single fuel source to generate both electricity and heat.

• The heat produced during electricity generation is captured and used for heating buildings or industrial processes.

• Co-Generation plants are more efficient than traditional power p...read more

Thermal power plants use fossil fuels to generate electricity. They have advantages and disadvantages.

• Advantages: Reliable source of electricity, low operating cost, high efficiency, easy to operate and maintain

• Disadvantages: High initial cost, environmental pollution, non-renewable source of energy, limited availability of fuel

• Example: Advantages - Thermal power plants provide a reliable source of electricity that can...read more

Tariff is a tax imposed on imported or exported goods. It is analyzed based on the type of goods and the country of origin/destination.

• Tariff is a form of protectionism used by governments to protect domestic industries from foreign competition.

• Tariffs can be specific (fixed amount per unit) or ad valorem (percentage of the value of the goods).

• Tariffs can also be used as a tool for diplomacy, by imposing tariffs on cou...read more