computer science Engineering ..

Thus according to Wilson's theory since larger negatively charged drops settle on the base of the cloud and smaller positively charged drops settle on the upper positions of the cloud, the lower base of the cloud is negatively charged and the upper region is positively charged (Figure.1.4 (b)).Simpson's and Scarse Theory Simpson's theory is based on the temperature variations in the various regions of the cloud. When water droplets are broken due to air currents, water droplets acquire positive charges whereas the air is negatively charged. Also when ice crystals strike with air, the air is positively charged and the crystals negatively charged. The theory is explained with the help of Fig. 1.5. Air currents 10 m/sec Figure: 1.5 Charge generation and separation in a thunder The increase in transmission voltages needed to fulfill the required increase in transmitted powers, switching surges have become the governing factor in the design of insulation for EHV and UHV systems. In the meantime, lightning over voltages come as a secondary factor in these networks. There are two fundamental reasons for this shift in relative importance from lightning to switching surges as higher transmission voltages are called for: Overvoltages produced on transmission lines by lightning strokes are only slightly dependent on the power systemvoltages.As a result, their magnitudes relative to the system peak voltage decrease as the latter is increased. Draw binary tree diagrams for each of the following Scheme expressions: '(1 2 3 4 5) '(1 02 03 04 (5))))) '(((((1) 2) 3) 4) 5) '((1 2) ((34) ((5 6)))) '((()) ((O) ())) . 11:39 am Thus according to Wilson's theory since larger negatively charged drops settle on the base of the cloud and smaller positively charged drops settle on the upper positions of the cloud, the lower base of the cloud is negatively charged and the upper region is positively charged (Figure.1.4 (b)).Simpson's and Scarse Theory Simpson's theory is based on the temperature variations in the various regions of the cloud. When water droplets are broken due to air currents, water droplets acquire positive charges whereas the air is negatively charged. Also when ice crystals strike with air, the air is positively charged and the crystals negatively charged. The theory is explained with the help of Fig. 1.5. Air currents 10 m/sec Figure: 1.5 Charge generation and separation in a thunder The increase in transmission voltages needed to fulfill the required increase in transmitted powers, switching surges have become the governing factor in the design of insulation for EHV and UHV systems. In the meantime, lightning over voltages come as a secondary factor in these networks. There are two fundamental reasons for this shift in relative importance from lightning to switching surges as higher transmission voltages are called for: Overvoltages produced on transmission lines by lightning strokes are only slightly dependent on the power systemvoltages.As a result, their magnitudes relative to the system peak voltage decrease as the latter is increased. Draw binary tree diagrams for each of the following Scheme expressions: '(1 2 3 4 5) '(1 02 03 04 (5))))) '(((((1) 2) 3) 4) 5) '((1 2) ((34) ((5 6)))) '((()) ((O) ())) . 11:39 am