Process Equipment and Plant Design Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent. 35 20 5 55 35 20 5 55 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Fouling factor must be included in the calculation of over all design heat transfer coefficient, when the liquid Containing suspended solids flows at high velocity Is highly viscous Containing suspended solids flows at low velocity Is of high specific gravity Containing suspended solids flows at high velocity Is highly viscous Containing suspended solids flows at low velocity Is of high specific gravity ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate? Square pitch Triangular pitch Heat transfer rate is independent of tube arrangement Diagonal square pitch Square pitch Triangular pitch Heat transfer rate is independent of tube arrangement Diagonal square pitch ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around 180 and 300 300 and 500 5 and 10 45 and 75 180 and 300 300 and 500 5 and 10 45 and 75 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In condenser, the cooling water is passed in the tube side in a pass arrangement, because Pressure drop is reduced More thinner tubes can be used It makes condenser compact It reduces heat transfer area Pressure drop is reduced More thinner tubes can be used It makes condenser compact It reduces heat transfer area ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The normal range of velocity of steam in pipes is __________ m/sec. 1-5 80-100 0.1-0.5 10-20 1-5 80-100 0.1-0.5 10-20 ANSWER DOWNLOAD EXAMIANS APP
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