The unit of heat transfer co-efficient in SI unit is____________________?
The unit of heat transfer co-efficient in SI unit is____________________?
A. J/M2°K
B. W/m2°K
C. W/m°K
D. J/m°K
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The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the________________ ?
The capacity of double-effect evaporator is less than half of the capacity of two single effects, each of which is operating over same terminal temperature difference, when the________________ ?A. Solution has an elevation of boiling point
B. Evaporators operate under vacuum
C. Evaporators operate at atmospheric pressure
D. None of theseMode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called_______________?
Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called_______________?A. Radiation
B. Natural convection
C. Forced convection
D. ConductionRate of heat transfer by vaporisation from pools of water is affected by the ____________________?
Rate of heat transfer by vaporisation from pools of water is affected by the ____________________?A. Nature of heating surface and distribution of bubbles
B. Surface tension of water
C. Viscosity of water
D. All A., B. and C.A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?
A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?A. 6000
B. 24000
C. 60000
D. 48000A graph between _____________ is called Wilson plot?
A graph between _____________ is called Wilson plot?A. (1/U) Vs. (1/v0.8)
B. (1/v0.8) Vs. U
C. v0.8 Vs . U
D. (1/U) Vs. (1/V)The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?
The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?A. αT
B. α × 1/T
C. α T4
D. Independent of T