Process Equipment and Plant Design Which of the following packing materials provides for maximum mass transfer? Raschig rings Lessig rings Cross-partition rings All of these Raschig rings Lessig rings Cross-partition rings All of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Apex angle of conical heads used in the bottom heads of chemical process equipments is usually 30° 75° 60° 45° 30° 75° 60° 45° ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate? Square pitch Heat transfer rate is independent of tube arrangement Diagonal square pitch Triangular pitch Square pitch Heat transfer rate is independent of tube arrangement Diagonal square pitch Triangular pitch ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design To keep the power input constant for a stirred vessel operating under fully developed turbulent flow conditions (constant power number), if the impeller diameter is increased by 20%, the impeller speed should be decreased by a factor of (1.2)2/3 (1.2)5/3 (1.2)3/5 (1.2)3/2 (1.2)2/3 (1.2)5/3 (1.2)3/5 (1.2)3/2 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is > 20 < 10 30 > 10 > 20 < 10 30 > 10 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing. 200-250 50-75 25-50 750-1000 200-250 50-75 25-50 750-1000 ANSWER DOWNLOAD EXAMIANS APP
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