Heat Transfer Nucleate boiling is promoted On polished surfaces None of these On rough surfaces In the absence of agitation On polished surfaces None of these On rough surfaces In the absence of agitation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The driving potential for the crystal growth during crystallisation is the __________ of the solution. Viscosity Density Super-saturation Concentration Viscosity Density Super-saturation Concentration ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Log mean temperature difference (LMTD) cannot be used, if the heat capacity is not constant and there is a phase change. there exists an unsteady state none of the listed here heat transfer co-efficient over the entire heat exchanger is not constant the heat capacity is not constant and there is a phase change. there exists an unsteady state none of the listed here heat transfer co-efficient over the entire heat exchanger is not constant ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A multiple effect evaporator as compared to a single effect evaporator of the same capacity has Lower steam economy Higher steam economy Higher solute concentration in the product Lower heat transfer area Lower steam economy Higher steam economy Higher solute concentration in the product Lower heat transfer area ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred By heating an intermediate material (like chequor bricks) and then heating the air from this hot material None of these By direct contact of hot flue gas with air Through a metallic wall By heating an intermediate material (like chequor bricks) and then heating the air from this hot material None of these By direct contact of hot flue gas with air Through a metallic wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer LMTD for counterflow and prallel flow heat exchanger will be the same, when the Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid Outlent temperature of both the hot and cold fluid are same Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid) None of these Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid Outlent temperature of both the hot and cold fluid are same Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid) None of these ANSWER DOWNLOAD EXAMIANS APP
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