Process Equipment and Plant Design In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes) (D₂² - D₁²)/D₂² (D₂² - D₁²)/D₁² D₂ - D₁ None of these (D₂² - D₁²)/D₂² (D₂² - D₁²)/D₁² D₂ - D₁ None of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following packing materials provides for maximum mass transfer? All of these Raschig rings Cross-partition rings Lessig rings All of these Raschig rings Cross-partition rings Lessig rings ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure? At the outer surface At the mid thickness of the cylindrical wall At the inner surface None of these At the outer surface At the mid thickness of the cylindrical wall At the inner surface None of these ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG. Decreases None of these Remains same Increases Decreases None of these Remains same Increases ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The ends of a cylinderical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure. Ellipsoidal Torispherical Hemispherical Flat plate Ellipsoidal Torispherical Hemispherical Flat plate 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)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 (1.2)2/3 ANSWER DOWNLOAD EXAMIANS APP
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