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Energy & Environment

Renewable energy, power plants, boilers and environmental engineering: how each technology works, where it is used, pros and cons.

Energy & Environment

Direct Energy Conversion: Methods, Working Principles and Applications

Direct energy conversion makes electricity with no turbine or generator: thermoelectric, thermionic, PV, fuel cell, MHD and RTG methods, with worked numbers.

Updated 24 Sep 2026
Energy & Environment

Site Selection for Hydroelectric Power Plants: Head, Flow, Catchment and Geology

Site selection of a hydro power plant: head and flow, catchment and runoff, storage, dam geology, silt and environment, with worked power and flow sums.

Updated 23 Sep 2026
Energy & Environment

Site Selection for Nuclear Power Plant

Site selection for a nuclear power plant in India: AERB siting code, 1 km, 5 km and 16 km zones, faults, floods, tsunami, cooling water and example sites.

Updated 23 Sep 2026
Energy & Environment

Site Selection for Thermal Power Plant

Site selection for a thermal power plant: coal supply, cooling water, ash disposal, land, emission rules and grid, with worked numbers for a 1000 MW plant.

Updated 23 Sep 2026
Energy & Environment

Difference Between Renewable and Non-Renewable Resources

Renewable resources (sun, wind, water, biomass) replenish naturally; coal, oil, gas and uranium run out. Differences table, examples, pros and cons.

Updated 19 Sep 2026
Energy & Environment

Layers of Atmosphere: The 5 Main Layers, Their Altitudes, Temperatures and Features

The 5 layers of the atmosphere with altitudes, temperatures and features, why some books list 6, lapse rate and pressure examples, and the outer layer.

Updated 24 Sep 2026
Energy & Environment

EDSAC Full Form: Electronic Delay Storage Automatic Calculator

EDSAC full form is Electronic Delay Storage Automatic Calculator, the 1949 Cambridge stored-program computer. Key facts, memory, history and legacy.

Updated 19 Sep 2026
Energy & Environment

ISMC Full Form: Indian Standard Medium Channel, Sizes and Uses

ISMC full form is Indian Standard Medium Channel, a C-shaped steel section to IS 808. Size and weight table (ISMC 75 to 400), ISMC vs ISMB and common uses.

Updated 19 Sep 2026
Energy & Environment

After the 12th, Which Engineering Branch Should I Choose and Why?

Pick an engineering branch after 12th by matching your PCM strengths to what each branch studies in years 2-4, its careers and recruiters, and your rank.

Updated 24 Sep 2026
Energy & Environment

Role of an Individual in the Conservation of Natural Resources

The role of an individual in conservation of natural resources, resource by resource: water, energy, forests, soil, minerals and food, with the 5 Rs.

Updated 24 Sep 2026
Energy & Environment

Types of Solar Panels: Monocrystalline, Polycrystalline and Thin-Film Compared

Types of solar panels: monocrystalline (PERC, TOPCon, HJT), polycrystalline and thin-film. Efficiency, cost, lifespan, rooftop sizing, which to buy.

Updated 24 Sep 2026
Energy & Environment

Constructional Details of a Biogas Plant: Parts, Materials and Sizing

Biogas plant construction explained: floating drum (KVIC) vs fixed dome (Deenbandhu), parts, materials, site selection, a worked sizing example and faults.

Updated 24 Sep 2026