why back washing is performed in DM water plant?

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AS PER IS(INDIAN STANDARD)RULES, IS INSTRUMENT EARTHING REQUIRE FOR INSRTUMENT WHICH IS ONLY 24V DC POWERED?

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What does the catalytic converter on an automobile really do?

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What is a common source of error in determining the percent spent caustic in refinery applications?

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ACCOUNTING AND FINANCIAL ENGINEERING - EXAMPLE 34.8 : Cash flow agreement where the sign + or - of the amounts are start negative and at a point switch to positive and stay positive is referred to has an investment. The cash flow could be denoted by the symbol of [a, b, c ...]. Consider the following two cases in a biochemical factory : (a) You pay $1 today. You receive $1.05, one year from now. (b) You pay $3 today. You receive $5, one year from today. You pay $2, two years from today. Determine if cases (a) and (b) are an investment or a business transaction with cash flow symbol. Find the interest rate r in the cash flow in both cases (a) and (b).

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Define a barometric condenser?

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Which book I should refer for designing heat exchangers and reactors?

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Define pcbs?

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The power required for size reduction in crushing is???

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What's the difference between superphosphate and triple super phosphate fertilizer?

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design calculations for reactor

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What are some common problems associated with bellow expansion joints?

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