Heat Transfer For turbulent flow in a tube, the heat transfer co-efficient is obtained from the Dittus-Boelter correlation. If the tube diameter is halved and the flow rate is doubled, then the heat transfer co-efficient will change by a factor of 1 37 1.74 6.1 1 37 1.74 6.1 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Vibrations in the tubes of a shell and tube heat exchanger is induced due to the Flow of fluid on the tube and shell sides Vibrations transmitted through piping and/or supports due to external reasons All of these Oscillations in the flow of shell/tube sides fluid Flow of fluid on the tube and shell sides Vibrations transmitted through piping and/or supports due to external reasons All of these Oscillations in the flow of shell/tube sides fluid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In the equation Q = UAΔt; Δt is Logarithmic mean temperature difference Geometric mean temperature difference Arithmetic mean temperature difference The difference of average bulk temperatures of hot and cold fluids Logarithmic mean temperature difference Geometric mean temperature difference Arithmetic mean temperature difference The difference of average bulk temperatures of hot and cold fluids ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Unsteady state heat conduction occurs, when Temperature distribution is independent of time Temperature distribution is dependent on time Three dimensional heat flow is concerned Heat flows in one direction only Temperature distribution is independent of time Temperature distribution is dependent on time Three dimensional heat flow is concerned Heat flows in one direction only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In which mode of heat transfer, the Biot number is important? Natural convection Radiation Forced convection Transient heat conduction Natural convection Radiation Forced convection Transient heat conduction ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Radiation energy is emitted by all the substances, which are above 0°C 100°C 0°K none of the listed here 0°C 100°C 0°K none of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS