Gujarat Technological University 2009-1st Sem B.Pharm acy Remedial (Pharmaceutical Engineering) - Question Paper
Seat No. Enrolment No.
GUJARAT TECHNOLOGICAL UNIVERSITY
B. Pharmacy Sem-I Remedial examination March 2009
Subject code: 210004
Subject Name: Pharmaceutical Engineering Date: 17 / 03 /2009 Time: 02:30pm-5:30pm
Total Marks: 80
Instructions:
1. Attempt any five questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Draw well labeled diagrams, wherever necessary
Q.1
(a) Define stoichiometry. Give significance of stoichiometry in pharmacy field
(b) Define the following terms: (i) Unit operations (ii) Dimensional equation (iii) Tie substance.
(c) Paper is passing continuously through a tunnel drier. The entering paper contains 0.1 lb water/Lb dry paper and the leaving paper contains 0.02 lb water/lb dry paper. How many pounds of water is evaporated per hour if 1000 lb/hr of paper enters the drier ?
(d) Write a short note on Glass as a material for plant construction.
(e) 100 lb of wet air containing 0.1 lb water vapour/lb dry air is mixed with 50 lb of another wet air containing 0.02 lb water vapour/lb dry air. Calculate the pounds of water vapour per lb of dry air in the final mixture.
Q.2
(a) Explain heat transfer by conduction. Derive the equation for the rate of heat transfer when the resistance are in series.
(b) Write a short note on Black body and explain Stephen Boltzmann law for black body.
(c) The temperature of the inside of the oven is 4200F. The inside wall of the oven is of brick, which is 8 inch thick and thermal conductivity is 2.2 BTU/hr.ft2. 0F/ft. The outside of the oven is covered with a 3-inch asbestos. The thermal conductivity of asbestos taken as 0.11 BTU/hr.ft2. 0F/ft. The outside insulation has a temperature of 1000F. Calculate the heat lost through 2 ft2 of wall area in 3 hr
(d) Write a short note on Steam as a heating medium
Q.3
(a) Define (i) Fluid Flow (ii) Streamline flow (iii) Turbulent flow
(b) Give importance of study of fluid flow in pharmacy.
(c) Give Reynolds equation and mention significance of Reynolds number.
(d) A fluid is flowing at a rate of 6 ft /min through a pipe having inside 07 diameter of 0.167 ft. Density of fluid is 30 lb/ft3 and viscosity of fluid is 0.002 lb/s.ft. Calculate (i) Average linear velocity. (ii)
Reynolds number (iii) Report the type of flow
(a) Discuss how Bernoullis theorem is used to derive an equation to 07 measure flow rate using venturimeter
(c) A mercury manometer is attached across up stream and orifice plate 05 concentrically placed in a pipe. Water ( p = 1.0 g/cc) flows inside
the pipe. Manometer reading is 15 cm Hg (pHg = 13.6 g/cc).
Calculate pressure difference DP in terms of g/cm1. If instead of mercury manometer, carbon tetrachloride (p = 1.6 g/cc) manometer is attached, what will be manometer reading?
Q.5 Answer (Any FOUR) of the following 16
(a) Discuss in detail about the various types of Heat exchangers
(b) Give the importance of pharmaceutical engineering in the field of pharmacy
(c) Discuss the various methods for the prevention of corrosion
(d) Write a short note on Rotameter
(e) Discuss the various factors affecting selection of material of plant construction
Q. 6
(c) Discuss in brief about the various modes of transportation used for 05 solid materials
Q.7 Write short note on (Any FOUR) 16
(a) Various equations used to calculate the loss of mechanical energy due to friction
(b) Steam traps.
(c) Gas laws
(d) Influence of mass transfer on unit operations
(e) Film co-efficient.
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