Solving a current cut (power outage) in a mixed zone consisting of 75 houses, 3 apartment complexes, and 3 hospitals requires a tiered approach that prioritizes life safety first, followed by infrastructure stabilization and local backup power management . Because hospitals are present, this grid failure is treated as a critical tier-1 emergency . 1. Immediate Life-Safety Phase (Hospitals First) Verify Hospital Backup Power: Your absolute first priority is ensuring the 3 hospitals have successfully transitioned to their Emergency Power Supply Systems (EPSS). Hospitals are legally mandated to have diesel generators capable of starting automatically within 10 seconds of a power failure. Coordinate Fuel Logistics: Check the fuel levels of the hospital generators. During a prolonged blackout, you must coordinate with local fuel suppliers or emergency management agencies to establish a dedicated refueling pipeline for these medical facilities. Identify Vulnerable Residents: Have the ...

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Unit III: Natural Phenomena (12 Marks) Light – Reflection and Refraction Reflection of light by curved surfaces Spherical mirrors, mirror formula, and magnification Refraction of light, laws of refraction, and refractive index Refraction by spherical lenses and lens formula Power of a lens   The Human Eye and the Colourful World LIGHT/ REFLECTION/ REFRACTION/LENS. CONVEX/ CONCAVE. SPHERICAL/ POWER OF LENS./MIRRORS/ CURVED SURFACES. Unit IV: Effects of Current (13 Marks)  Electricity : Covers electric current, potential difference, Ohm's law, resistance/resistivity, series and parallel resistor combinations, heating effects, and electric power. CURRENT/ POTENTIAL DIFFERENCE/ LAWS/OHMS/ RESISTANCE/ SERIES/PARALLEL.HEAT/ POWER. Magnetic Effects of Electric Current : Covers magnetic fields, field lines, current-carrying conductors, Fleming's Left-Hand Rule, AC vs. DC, and domestic electric circuits. MAGNET/ FIELD. LINE. CONDUCTORS. RULE/LEFT HAND/ AC DC  /DOMESTIC/ MMMMMMMMM...