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How can we derive power factor equation p=vi cos phi?


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More Chemical Engineering Interview Questions

Explain the some guidelines for sizing a psv for a fire scenario on a vessel in a refinery service?

0 Answers  


A shiny brown colored element ‘x’ on heating in air becomes black in cooler name the element ‘x’and black colored compound formed?

0 Answers  


what is the purpose of capacitor? and capacitor load means what? how does it connect?

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which thing is responsible for making petroleum?

6 Answers   OGDCL,


is petroleum a mixture of hydrocarbon?

5 Answers  


what are the chemicals used in PFR and MFR to Process?

0 Answers  


Question 10 - In the US (United States), one barrel is equal to 42 US gallons and equivalent to 0.15898 cubic metres. One British barrel is equal to 36 Imperial gallons and equivalent to 0.163659 cubic metres. If an oil refinery in England sells 42 Imperial gallons of crude oil to a company in US, how much US gallons of crude oils has been sold?

1 Answers  


plz send me hpcl and reliance entrance test papers on my id s,kumar_bk@yahoo.co.in

1 Answers   Reliance,


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 Answers  


In a triple effect evaporator, the heat transfer for an evaporator is calculated as q = UA (TI – TF) where TI is the initial temperature, TF is the final temperature; U and A are constants. Given that heat transfer for the first evaporator : q(1) = UA (TI – TB); second evaporator : q(2) = UA (TB – TC); third evaporator : q(3) = UA (TC – TF) where q(x) is the heat transfer function, TB is the temperature of second inlet and TC is the temperature of third inlet, prove that the overall heat transfer Q = q(1) q(2) q(3) = UA (TI – TF).

1 Answers  


Explain what information is needed to specify a mixer?

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What are advantages using hollow shaft impeller?

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