| January 16th, 2018 09:04 AM | |
| prince karak | Re: jnu old paper I am providing you the question paper of Momentum Transfer of B.E Chemical Engineering of Jawaharlal Nehru University JNU JNU B.E Chemical Engineering question paper Momentum Transfer Time: three hours Max Marks: 80 ans any 5 ques. All ques. carry equal marks 1. Write short notes on: (a) Unit operation (b) Dimensionless formula (c) Dimensional formula. [6+5+5] 2. Water is pumped at the rate of 200 lit/s through a 30 cm pipe upto a hill top. If the pump maintains a pressure of 150 kN/m2 at the hill top at an elevation of 45 m, What is the pressure at the foot hills at zero elevation. Neglecting losses, What is the power needed to pump the water? [16] 3. Under conditions of laminar flow , the friction factor is provided by 16/ NRe .Derive an expression for the pressure drop per unit length in terms of the pipe diameter, ‘d’, the avg. velocity ‘u’, the density and the viscosity of the fluid. [16] 4. (a) Derive the formula of continuity of compressible fluids. State the assumptions clearly. (b) Methane gas is being pumped through a 305m length of 52.5mm diameter steel pipe at a rate of 41.0kg/m2-s.The inlet and outlet pressure is 345kPa abs and 298kPa. presume isothermal flow at 288.8K.Calculate the maximum velocity that can be found at these conditions. [10+6] 5. (a) Write Erguns formula and comment on its applicability. (b) Differentiate free and hindered settling. [16] 6. Distinguish particulate and aggregative fluidization. [16] 7. discuss the working of a centrifugal pump with neat sketch. [16] 8. A lube oil(specific gravity 0.8) is flowing through a 15 cm steel pipe at 1500 LPM. A 10 cm orifice attached to a mercury manometer is placed in the pipe line and the orifice coefficient may be taken as 0.62. If the manometer leg is inclined at an angle of 300 to the horizontal, what would be the manometer studying along the sloping leg? Contact- Jawaharlal Nehru University New Mehrauli Road, Munirka, New Delhi, Delhi 110067 |
| January 16th, 2018 09:03 AM | |
| Unregistered | Re: jnu old paper I want the question paper of Momentum Transfer of B.E Chemical Engineering of Jawaharlal Nehru University JNU so can you provide me? |
| June 22nd, 2016 03:23 PM | |
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