Heat Transfer Which of the following is not used as a medium for high temperature heating ? mercury dowtherm None of the listed here liquid metal mercury dowtherm None of the listed here liquid metal ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer According to Reynolds analogy, Stanton number is equal to 2f f/2 f/4 f 2f f/2 f/4 f ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Indirect contact heat exchangers are preferred over direct contact heat exchangers, because There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high There is no mist formation There is no risk of contamination Cost of equipment is lower Heat transfer co-efficient are high There is no mist formation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer When does the heat generated by fluid friction becomes appreciable compared to the heat transferred between the fluids? At high fluid velocity When fluid flows past a smooth surface None of these At low velocity At high fluid velocity When fluid flows past a smooth surface None of these At low velocity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Painting the surface white (with aluminium paint) Painting the surface black Roughening the surface Giving the surface a mirror finish Painting the surface white (with aluminium paint) Painting the surface black Roughening the surface Giving the surface a mirror finish ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer LMTD for counterflow and prallel flow heat exchanger will be the same, when the Outlent temperature of both the hot and cold fluid are same Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid None of these Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid) Outlent temperature of both the hot and cold fluid are same Outlet temperature of hot fluid is less than the outlet temperature of the cold fluid None of these Cold fluid is heated to a certain temperature by condensing steam (isothermal fluid) ANSWER DOWNLOAD EXAMIANS APP
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