Answer / kangchuentat

ACCOUNTING AND FINANCIAL ENGINEERING - ANSWER 34.22 : (a) Breakeven Analysis examines the effect of volume (D) on revenue (DC), costs (DB + A) and profit [ DC - (DB + A) ]. (b) Contribution Margin = C - B. (c) When revenue = cost, then DC = DB + A, D (C - B) = A, D = A / (C - B). The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.

ENGINEERING MATHEMATICS - EXAMPLE 8.1 : A local utility burns coal having the following composition on a dry basis : Carbon (C) 83.05 %, hydrogen (H) 4.45 %, oxygen (O) 3.36 %, nitrogen (N) 1.08 %, sulfur (S) 0.7 % and ash 7.36 %. Calculate the ash free composition of the coal with reference to C, H, O, N and S.

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What are the assumptions made for kynch theory?

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What are the factors involved in considering the choice of dry screw compressor?

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Question 93 - In thin layer chromatography (TLC), let retention factor Rf = (distance traveled by solute) / (distance traveled by solvent). Silica gel is used as stationary phase which is more polar than the hexane solvent as mobile phase. If the Rf values of 3 solutes A, B and C are 1.5, 0.75 and 1 respectively, compare the polarities of A, B and C with reasons.

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which is more effective , a single extraction with a large volume of solvent or several small volume extractions? Explain.

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What do we use carburizing/nitriding chemicals for?

0 Answers   Ashok Leyland,

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Are there any special considerations to be taken into account for combusting ammonia?

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ENGINEERING PHYSICS - EXAMPLE 30.1 : Two viruses a and b with masses of Ma and Mb are moving at velocities of Va and Vb respectively, facing towards each other and collide. After collision both masses of Ma and Mb disappear. (a) Find the total momentum available for both a and b. Hint : momentum = mass x velocity = M x V. (b) Guess the total energy E generated from the disappearance of a and b. Let c to be the velocity of light. Hint : E is equal to M c square.

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Is there a rule of thumb to estimate the footprint of a cooling tower during design phase?

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For a heat exchanger, will the overall heat transfer coefficient increase along with an increase in lmtd (log mean temperature difference) around the unit?

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When using a pumping loop to mix two miscible fluids in a tank, when can the content are considered well mixed?

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How can one quickly estimate the additional pressure drop to be introduced with more tube passes?

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