Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the Maximum resistance in the series Average of all resistances Sum of all resistances Minimum resistance presents in the series TRUE ANSWER : ? YOUR ANSWER : ?
In a single effect evaporator, the economy is > 1 None of these 1 < 1 TRUE ANSWER : ? YOUR ANSWER : ?
An ejector is used to None of these Increase pressure Remove condensate Increase temperature TRUE ANSWER : ? YOUR ANSWER : ?
In thermal radiation for a black body (where, ε is emissivity and α is absorptivity) α ≠ 1, ε = 1 α = 1; ε ≠ 1 α ≠ 1, ε ≠ 1 α = 1; ε = 1 TRUE ANSWER : ? YOUR ANSWER : ?
The purpose of providing bleed points in the evaporator is to Admit the feed Create vacuum Remove the product Facilitate removal of non-condensable gases TRUE ANSWER : ? YOUR ANSWER : ?
Harmonic mean temperature difference is given by (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) √(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) TRUE ANSWER : ? YOUR ANSWER : ?
In a forward feed multiple effect evaporator unit Transfer from effect to effect is done by pumps None of these Viscosity of liquid is highest in first effect No pump is required to withdraw the product from the last effect TRUE ANSWER : ? YOUR ANSWER : ?
If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law. Parabolic Hyperbolic Logarithmic Linear TRUE ANSWER : ? YOUR ANSWER : ?
A multiple effect evaporator as compared to a single effect evaporator of the same capacity has Lower heat transfer area Lower steam economy Higher steam economy Higher solute concentration in the product TRUE ANSWER : ? YOUR ANSWER : ?
The purpose of providing a 'catchall' in the vapor line of an evaporator is to Regulate the vapor flow Create vacuum Vent the non-condensible gases Arrest the entrained liquid TRUE ANSWER : ? YOUR ANSWER : ?