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Ajit had a high tension tower erected on his farm land. He kept complaninng to the authorities to remove it as it was occupying a large portion of his land. His uncle who was a teacher, explained to him the need for erecting these toward for efficient transmission of power. As Ajit realized its significance, he stopped complaining. Read the above passage and answer the following questions : (i) Why is necessary to transport power at high voltage ? (ii) A low power factor implies larger power loss. Explain. (iii) Write two values each, displayed by Ajit and his uncle. |
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Answer» (i) Power has to be transported at high voltage to reduce the eneryg losses and also the cost of transmission. (ii) As `P = E_(v) I_(v) cos phi`. To transmit a given power P at a given voltage `E_(V)` if `cos phi` is small ,`I_(v)` has to be increased. Therefore, power loss `= I_(v)^(2) R` will increase. (iii) Ajit understood the necessary of high tension tower which did not affect his land adversely. His uncle made practial use of his knowledge by convincing Ajit that high tensions towers are essential and they cause no harm to the farm land. |
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