Process Equipment and Plant Design High pressure fluid in a shell and tube heat exchanger should preferably be routed through the Tubes to avoid the expansion of high pressure shell construction Shell side for large overall heat transfer co-efficient Shell side, if the flow is counter-current and tube side if the flow is co-current Shell side for smaller total pressure drop Tubes to avoid the expansion of high pressure shell construction Shell side for large overall heat transfer co-efficient Shell side, if the flow is counter-current and tube side if the flow is co-current Shell side for smaller total pressure drop ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In case of a continuous distillation column, increase in reflux ratio may result in the Greater cost for the condenser coolant Lower fixed charges for the column All of these Greater cost for the reboiler heat supply Greater cost for the condenser coolant Lower fixed charges for the column All of these Greater cost for the reboiler heat supply ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by No relation exists σh = σL σh = σL/2 σh = 2 σL No relation exists σh = σL σh = σL/2 σh = 2 σL ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design Which of the following lengths of heat exchanger tubes are normally not used in practice? 0.5 metre 2.5 metres 10 metres 6 metres 0.5 metre 2.5 metres 10 metres 6 metres 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? Heat of mixing of normal liquid is assumed to be zero Sensible heat changes for vapour & liquid are negligibly small Reflux is not a saturated liquid Molar latent heat of the two components are equal Heat of mixing of normal liquid is assumed to be zero Sensible heat changes for vapour & liquid are negligibly small Reflux is not a saturated liquid Molar latent heat of the two components are equal ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator Employs high velocity, high heat transfer rate and less heating surface requirement Is economical in operation Both B & C Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle Employs high velocity, high heat transfer rate and less heating surface requirement Is economical in operation Both B & C Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle ANSWER DOWNLOAD EXAMIANS APP
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