Process Equipment and Plant Design The length of straight rectangular weir used on cross-flow trays is generally __________ the column diameter. 0.6-0.8 times Equal to 2 ft irrespective of (for column > 3 ft diameter) Twice 0.6-0.8 times Equal to 2 ft irrespective of (for column > 3 ft diameter) Twice ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method? Reflux is not a saturated liquid Sensible heat changes for vapour & liquid are negligibly small Heat of mixing of normal liquid is assumed to be zero Molar latent heat of the two components are equal Reflux is not a saturated liquid Sensible heat changes for vapour & liquid are negligibly small Heat of mixing of normal liquid is assumed to be zero Molar latent heat of the two components are equal ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell Remains same throughout Decreases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Increases upwards Remains same throughout Decreases upwards May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell Increases upwards ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area) Aa = Sa Sa = 1.5 Aa Aa = 1.5 Sa 1.2 Aa = 1.2 Sa Aa = Sa Sa = 1.5 Aa Aa = 1.5 Sa 1.2 Aa = 1.2 Sa ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of saddle packing (e.g., berl and intralox saddles), the maximum size of the packing should not exceed __________ of the column diameter. l/30th l/50th l/5th l/15th l/30th l/50th l/5th l/15th ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Low pressure steam (with saturation temperature between 105 to 120°C) is usually used in the vacuum evaporators, which normally employ a vacuum of about __________ mm Hg (referred to a 760 mm mercury barometer). 450 250 750 650 450 250 750 650 ANSWER DOWNLOAD EXAMIANS APP
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