Heat flux, as defined in heat flow is analogous to __________ in electricity flow. Voltage Resistance None of these Current TRUE ANSWER : ? YOUR ANSWER : ?
With increase in temperature, the total emissivity of conductors Remains same Increases Decreases linearly Decreases TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is correct ? Resistance = Driving force x Rate Driving force = Rate x Resistance Rate = Driving force x Resistance Rate = Resistance/Driving force TRUE ANSWER : ? YOUR ANSWER : ?
Heat transfer rate described by Fourier's law will decrease, if the __________ increases. Temperature difference Thickness Heat transfer area Thermal conductivity TRUE ANSWER : ? YOUR ANSWER : ?
In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. Remains constant Increases May increase or decrease, depends on the vacuum Decreases TRUE ANSWER : ? YOUR ANSWER : ?
Heat transfer occurs by natural convection because change in temperature causes difference in Heat capacity Density Viscosity Thermal conductivity TRUE ANSWER : ? YOUR ANSWER : ?
Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively) 1/CE C/E E/C CE TRUE ANSWER : ? YOUR ANSWER : ?
Film boiling is usually not desired in commercial equipments, because it is difficult to maintain it is not economic none of the listed here the heat transfer rate is low in view of the large temperature drop. @ TRUE ANSWER : ? YOUR ANSWER : ?
__________ heat exchanger is used for chilling oil to be dewaxed. Floating head U-tube Fixed tube Double pipe TRUE ANSWER : ? YOUR ANSWER : ?
The sum of reflectivity and absorptivity for an opaque body is equal to 0.5 2 1 TRUE ANSWER : ? YOUR ANSWER : ?