Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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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 2216

What is comprehensive definition of compressor surging

1425

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,

1630

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,

1520

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

1669

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

adag,

1651

reason of diode failure in alternator

adag,

1862

aternator every parts and its working

adag,

1633

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.

1 2638

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 2306

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

1861

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

1946

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.

1 2507

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 2646

voltage and frequency is equal but synchronisation not complete why?

1 2646

Un-Answered Questions { Engineering }

WHAT CAUSED THRESHOLD VOLTAGE TO EXIST?

4075

what is the formula to calculate voltage drop/loss on 66KV Transmission Line?

3702

How is PH sensor works ?

1973

Is the theorem applicable to ac sources?

1050

One thing you should remember while trying to solve a math series is that math skills are generally not that important, but rather a vulture’s eye is required to get a strong hold on the unusual, yet a craziest of the logical minds is. Keep this in mind and try to complete the sequence with the appropriate number: 201315, 71280, 9253, 212, ?

2075

Explain the technique of gene conversion.

1068

What will you do if you encounter problems like accidents?

1008

we all know voltage is a force(emf), and the force always devides if 2 or more than2 loads are there but why does the voltage remains same is parallel, it must devide na ???

1996

how to check ac servo motor

2276

Who are the space couples?

786

Define what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?

990

How to check the LM324 Ic

8486

how rectifier transformer work in electroststic precipetatore(esp?

2652

Explain the significance of the angle of repose holds in the chemical industry?

1166

Define geo-textile?

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