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

Topic :: Press

Press Interview Questions

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Question 49 - According to rules of thumb in chemical process design, consider the use of an expander for reducing the pressure of a gas when more than 20 horsepowers can be recovered. The theoretical adiabatic horsepower (THp) for expanding a gas could be estimated from the equation : THp = Q [ Ti / (8130a) ] [ 1 - (Po / Pi) ^ a ] where 3 ^ 3 is 3 power 3 or 27, Q is volumetric flowrate in standard cubic feet per minute, Ti is inlet temperature in degree Rankine, a = (k - 1) / k where k = Cp / Cv, Po and Pi are reference and systemic pressures respectively. (a) Assume Cp / Cv = 1.4, Po = 14.7 psia, (temperature in degree Rankine) = [ (temperature in degree Celsius) + 273.15 ] (9 / 5), nitrogen gas at Pi = 90 psia and 25 degree Celsius flowing at Q = 230 standard cubic feet per minute is to be vented to the atmosphere. According to rules of thumb, should an expander or a valve be used? (b) Find the outlet temperature To by using the equation To = Ti (Po / Pi) ^ a.

1 2450

What is mean by compression ratio?

4 5236

Question 50 - An aqueous solution with 2.5 g of a protein dissolved in 600 cubic centimeters of a solution at 20 degree Celsius was placed in a container that has a water-permeable membrane. Water permeated through the membrane until the h - level of the solution was 0.9 cm above the pure water. (a) Calculate the absolute temperature of the solution, T in Kelvin, where T (Kelvin) = T (degree Celsius) + 273.15. (b) Calculate the osmotic pressure, P of the solution by using the formula P = hrg where h is level of the solution, r is density of water with 1000 kg per cubic meter, g = 9.81 N / kg as gravitational acceleration. (c) Calculate the concentration of the protein solution, C in kg / cubic meter. (d) Calculate the molecular weight of the protein, (MW) = CRT / P where R = 8.314 Pa cubic meter / (mol K) as ideal gas constant.

1 2640

In which principles tx ,pressure gauge,Temp gauge,control valve works?

Bajaj, Professional Instruments,

1822

how can calculate the compressive strength of concrete cylinder by water cement ratio ?

1696

how to find out compressive strength of concrete

Adarsh Group,

1 3676

As column is compression member then why we use steel to make it reinforced as it is already capable of taking compressive load?

MBL Infrastructures,

2 3579

What is the difference between high pressure gradient and low pressure gradient in hplc?

Cipla,

1 7312

how can i write a program that prints out a box such that whenever i press any key8(coordinate number) on the keyboard, the box moves.

1698

What is the importance of negative pressure in coating pan during coating ?

Student,

1 6579

My rotary kiln die 2mtrs x 36 mtrs long bauxite calcination .PL suggest ld fan cap.and pressure.

1550

Column is a compression member then why we provide reinforcement on column?

Simplex, Thermax, Vihaan Group,

1 4353

Question 57 – 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 2455

Maximum foundation pressure under PRCC box is 19 T/Sqm and net safe bearing capacity is 12.65. Is it safe? pl help me

Indian Railways,

1 2978

Why we test compressive strength after 28 days..?

NM Caramoan Builders,

3 4961