Process Equipment and Plant Design In the case of a shell and tube heat exchanger, the logarithmic mean temperature difference Is always more than arithmetic mean value and the geometric mean value Is always less than arithmetic average value Is always less than arithmetic mean value, but more than geometric mean value May be either more or less than geometric mean and arithmetic mean value depending upon whether the flow of stream is co-current or counter-current Is always more than arithmetic mean value and the geometric mean value Is always less than arithmetic average value Is always less than arithmetic mean value, but more than geometric mean value May be either more or less than geometric mean and arithmetic mean value depending upon whether the flow of stream is co-current or counter-current ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than 0.55 0.99 0.8 0.95 0.55 0.99 0.8 0.95 ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles? To increase the residence time of shell side fluid To increase the tube side heat transfer co-efficient by inducing turbulence To provide support to the tube bundle To reduce the induced vibration in the tubes To increase the residence time of shell side fluid To increase the tube side heat transfer co-efficient by inducing turbulence To provide support to the tube bundle To reduce the induced vibration in the tubes 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? Sensible heat changes for vapour & liquid are negligibly small Molar latent heat of the two components are equal Reflux is not a saturated liquid Heat of mixing of normal liquid is assumed to be zero Sensible heat changes for vapour & liquid are negligibly small Molar latent heat of the two components are equal Reflux is not a saturated liquid Heat of mixing of normal liquid is assumed to be zero ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design The dust collection efficiency of a cyclone separator Decreases with increase in gas flow rate Is inversely proportional to the mass of the dust particle None of these Is directly proportional to the radius of the dust particle path Decreases with increase in gas flow rate Is inversely proportional to the mass of the dust particle None of these Is directly proportional to the radius of the dust particle path ANSWER DOWNLOAD EXAMIANS APP
Process Equipment and Plant Design In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for Fixing the tubes Increasing pressure drop Reducing scale deposition Creating turbulence Fixing the tubes Increasing pressure drop Reducing scale deposition Creating turbulence ANSWER DOWNLOAD EXAMIANS APP
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