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WHY THE FREQUENCY IS 50 HZ IN INDIA.CAN WE USE SOME OTHER
FREQUENCY.IF SO WHAT IS THE RANGE AND WHAT WILL BE THE
EFFECT IN PRESENT POWER SYSTEM IF WE CHANGE THE FREQUENCY
AS YOU SUGGEST ?
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Answer Posted / harish.singarao
In India power generating stations are designed with
alternator which runs on 4 pole.
Since we have formula for syncronous speed
Ns=120f/P ; where f - frequency
p - No of Poles
It is possible to change frequency more than 50 hz, but it
will be a costly affair. We need to design our generating
system for more than 4 poles. second reason is that our
electrical equipments are pre-designed to operate on 50 hz.
If we change 50 hz to some other frequency it is same as
rebuilding INDIA again.
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54 Comments Alok and Bhanu play the following min-max game. Given the expression N = 38 + X*(Y – Z) where X, Y and Z are variables representing single digits (0 to 9), Alok would like to maximize N while Bhanu would like to minimize it. Towards this end, Alok chooses a single digit number and Bhanu substitutes this for a variable of her choice (X, Y or Z). Alok then chooses the next value and Bhanu, the variable to substitute the value. Finally Alok proposes the value for the remaining variable. Assuming both play to their optimal strategies, the value of N at the end of the game would be?
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