Engineering Interview Questions
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Question 106 - In a wavefunction, let P(x) = A cos kx + B sin kx. By using the boundary conditions of x = 0 and x = l, where P(0) = P(l) = 0, prove by mathematical calculation that P(x) = B sin (npx / l) where p = 22 / 7 approximately, n is a rounded number. A, B and k are constants.

1 1542

What is comprehensive definition of compressor surging

956

if i added hypo before DM plant so i will affect my resins of anion or cation. if affect it so do prevent what kind of step should be taken to remove hypo before DM inlet?

Hindustan Unilever Limited,

1067

Dear guys we adding hypo at climax plant and that water is inlet to DM plant so with hypo water that can affect my resins of cation and anion. if it is affect life of my anion and cation so what kind of steps should be take.

Hindustan Unilever Limited,

1017

what is the reason of capacitor failure in alternator which is working with 10 kva dgset

983

reason of capacitor failure or low voltage in alternator wtih 10kva dgset

adag,

1154

reason of diode failure in alternator

adag,

1396

aternator every parts and its working

adag,

1169

ENGINEERING DRAWING - EXAMPLE 18.3 : Autocad computer program is used to draw a pipe that is used to transport natural gases for processing. Actual length of the pipe is 10 metres. The pipe has cross sectional area of circle in shape with measured circumference of s = 3 metres. (a) If 10 units are used to represent the actual length of the pipe in computerised engineering drawing, find the diameter of the pipe, d that will be shown in the engineering drawing. (b) If one unit in the program equals to 1 centimetre, find the scale used in the computer program.

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ENGINEERING NUMERICAL METHODS - EXAMPLE 19.1 : Solve the simultaneous equation using simple Excel program : r + s - t = 7, 2r - s = 0, 3r + 2t = 15. Explain the use of functions of MINVERSE and MMULT together with the keyboard C (Ctrl) + S (Shift) + E (Enter).

1 1517

what is the difference between directional & non directional earth fault with example please explain.

1339

How to calculate pitch, gauge of winding wire, and No. of turns for 30HP, 3 phase, 4 poles 50Hz, 380V induction motors

1467

ENGINEERING NUMERICAL METHODS - EXAMPLE 19.2 : For a mixture of benzene (B), toluene (T) and xylene (X), the equation applies where x for B, T and X will sum up to 1. The equation of x for each component is x = (L / V + 1) (F) / (L / V + K). The data of F for each component are : 0.5 for B, 0.35 for T, 0.15 for X. The data of K for each component are : 1.98 for B, 0.76 for T, 0.24 for X. When x for B + x for T + x for X = 1, find the values of (a) L / V; (b) x for each component of B, T, X respectively. You may use Excel program - Data : What-If-Analysis for Goal Seek to perform the iterative calculations.

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ENGINEERING NUMERICAL METHODS - EXAMPLE 19.3 : There are 2 simultaneous equations : (A1) x + (B1) y = D1 and (A2) x + (B2) y = D2. (a) By using Excel program, find the values of x and y when A1 = 80, A2 = 150, B1 = 52, B2 = 100, D1 = 3.5 and D2 = 2.3. (b) Write the expression of Excel in the form of =MMULT(MINVERSE(W:X),Y:Z) in order to get the values of x and y. W, X, Y and Z may be A1, A2, B1, B2, D1 and D2.

1 1974

voltage and frequency is equal but synchronisation not complete why?

1 1766


Un-Answered Questions { Engineering }

I want single line diagram for AMF & DG syncronizing panel

6616


Tell me what is metallic fibers?

1


What types of pneumatic conveying systems are typically used?

582


What will happen if the voltage in my house drops from 220V to any lower voltage?

1645


can i connect REF and Differencial relay in 1 CT core for transformer protection?

1457






What are the major reasons for balancing hydro-thermal mix?

676


What will be the diameter of pipe between conservation tank and transformer

1442


how many E1's in pasolink and ipasolink?

1345


Without air traffic control, what is the minimum descent rate you can descend the plane?

607


salam,hi, i need to know what the spesification of 300amp msb...

1585


Explain what are the problems one might face while having a Cantilever balcony?

819


How to select HT/MV cable size ?

1985


What's is the mechanism of for stroke engine

940


What is noise in reference to electronic circuits?

578


any one have C-Dot interview question.....its urgent ...if any one hav..plzz share as soon as possible.

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