Question 33 – By using Excel program either on laptop or desktop PC, solve the differential equation dy / dx = -2y + x + 4 with h = 0.005, initial values : x = 0, y = 1. The 4th order Runge-Kutta method provides : y(N + 1) = y(N) + (1/6) (k1 + 2k2 +2k3 + k4), k1 = h [ -2y(N) + x(N) + 4 ], k2 = h { -2 [ y(N) + k1 / 2 ] + x(N) + h / 2 + 4 }, k3 = h { -2 [ y(N) + k2 / 2 ] + x(N) + h / 2 + 4 }, k4 = h { -2 [ y(N) + k3 ] + x(N) + h + 4 }. What is the value of y at x = 0.5?

1 Answers  

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which book is better for written test of a refinery or a chemical industry-o.p gupta or DR.RAM PRASAD?

2 Answers  

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What is cathodic protection, how it works in Turbine condensers ?

0 Answers   HPCL, HQL,

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Question 60 – During the landing process of an airplane, the velocity is constant at v. (a) If the displacement of the plane is x at time t, find the differential equation that relates t, x and v. (b) The plane has 2 parts of wheels – the front and the back, separated by a distance L. The front part of the wheel touches the land first, that allows the straight body of the plane to form an angle T with the horizontal land. If the vertical distance between the back part of the wheel and the horizontal land is y, find the equation of y as a function of L and T. (c) Find the differential equation that relates dy as a function of dt, v and sin T. (d) Find the differential equation that consist of dy as a function of y, L, v and dt. (e) Find the equation of y as a function of v, L, t and C where C is a constant. (f) When t = 0, prove that y = exp C as the initial value of y.

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What is the ignition temp. of Aluminum,Coper&Iron.

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Explain the method of determining maximum differential pressure during hydro testing of shell and tube heat exchangers?

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Explain global warming from a common man's and an engineer's perspective?

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What are the effects of oils on the properties of Polyolefins?

0 Answers   IOCL,

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why we make urea prills , why we do not make crystals of urea,

1 Answers   IFFCO,

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why rotameter has variable area?? is it necessary??

1 Answers  

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hello everyone do anyone have interview questions for any chemical industry please email me at ravijallu.nitj@gmail.com

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What is minimum fluidization velocity?

9 Answers   Haldia,

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