Answer / vikash

steam loss through pin hole = 2.5678 x e power (1.845 x steam jet length)

Question 61 – A biochemical trolley of mass 15 kg is towing a trailer of mass 5 kg along a straight horizontal pathway. The trailer and the trolley are connected by a light inextensible tow-bar. The engine of the trolley exerts a driving force of magnitude 100 N. The trailer and the trolley experience resistances of magnitude 10 N and 30 N respectively. (a) Form 2 equations with unknowns T and a, that represents the equilibrium for the 2 systems of the trolley and trailer. (b) Solve the simultaneous equations from the 2 equations that are obtained in part (a) of this question. T is the tension of the tow-bar and a is the acceleration.

1 Answers  

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Explain how does a tank-blanketing valve operate?

0 Answers  

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what is the height between the reflux pump and condenser ?

4 Answers  

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Explain how can one determine if a particular solid can be fluidized as in a fluidized bed?

0 Answers  

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what is difference between open loop system & close loop system by overview.

1 Answers   TCL,

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How can one determine the particle size distribution for a given bulk solid?

0 Answers  

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

0 Answers  

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What are the some common causes of control valve noise?

0 Answers  

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what is the discharge pressure formula, for calculating discharge pressure?

2 Answers  

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what is the difference between distillation column and distillation tower?

3 Answers  

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what is meant by runaway temperature in a reactor?

3 Answers   Cairn,

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Question 75 - The molecular weights M in kg / mol of 3 different monomers a, b and c in a polymer are Ma = 14, Mb = 16 and Mc = 18. The fraction of polymer chain X of 3 different monomers a, b and c in a polymer are Xa = 0.5, Xb = 0.3 and Xc = 0.2. (i) Calculate number average molecular weight by using the formula Ma Xa + Mb Xb + Mc Xc. (ii) Calculate weight average molecular weight by using the formula (Ma Xa Ma + Mb Xb Mb + Mc Xc Mc) / (Ma Xa + Mb Xb + Mc Xc). (iii) Calculate the polydispersity by using the answer in (ii) divided by answer in (i). (iv) If the molecular weight of repeat unit is 12, calculate the degree of polymerization by using the formula (Ma Xa + Mb Xb + Mc Xc) / (molecular weight of repeat unit).

1 Answers  

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