Carbon Cycle Chemical Reactions Involved: Photosynthesis: Air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a by product. During photosynthesis plants use carbon dioxide and produce oxygen.
Similar to shore power for ships, a ground power unit (GPU) may be used to supply electric power for an aircraft on the ground, to sustain interior lighting, ventilation and other requirements before starting of the main engines or the aircraft auxiliary power unit (APU).
Feeders: These are the conductors which are of large current carrying capacity.The feeders connect the substation to the area where power is to be finally distributed to the consumers.No tappings are taken from the feeders.The feeder current always remain constant.The voltage drop along the feeder is compensated by compounding the generator.