This type of coma is usually reversible once the blood sugar is corrected. Oxygen deprivation: Oxygen is essential for brain function. Cardiac arrest causes a sudden cutoff of blood flow and oxygen to the brain, called hypoxia or anoxia.
The external power supply is the AC power adapter that converts household AC electricity voltages to the much lower DC voltages needed to charge a mobile phone's internal battery.
Answer / chaitanya bharghav. raw power is the power generated by manually using raw materials like coal ,,gas ,, nuclear materials. but normal power means power generated by using renewable energy sources like wind. solar,,, bio gas.