Heat Transfer Steam side heat transfer co-efficient in an evaporator is in the range of __________ kcal/hr.m²°C. 100-500 5000-15000 18537 1000-1500 100-500 5000-15000 18537 1000-1500 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fouling factor Is a dimensionless quantity Does not provide a safety factor for design Accounts for additional resistances to heat flow None of these Is a dimensionless quantity Does not provide a safety factor for design Accounts for additional resistances to heat flow None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. Decreases Increases Remains unchanged May increase or decrease; depends on the liquid Decreases Increases Remains unchanged May increase or decrease; depends on the liquid ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Multipass heat exchangers are used Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube For low heat load To reduce the pressure drop Because of simplicity of fabrication To obtain higher heat transfer co-efficient and shorter tube For low heat load To reduce the pressure drop ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Fourier number (defined as a.t/L²) is used in the analysis of problem involving heat transfer by Steady state conduction Forced convection Transient conduction Natural convection Steady state conduction Forced convection Transient conduction Natural convection ANSWER DOWNLOAD EXAMIANS APP
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
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