In SI units, fouling factor is expressed in __________________?
In SI units, fouling factor is expressed in __________________?
A. m2°K/W
B. W/m2°K
C. m2°K
D. m°K/W
Similar Posts
Stefan-Boltzmann law applies to _____________ body?
Stefan-Boltzmann law applies to _____________ body?A. Black
B. White
C. Grey
D. Any colourBulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is __________________?
Bulk of the convective heat transfer resistance from a hot tube surface to the fluid flowing in it, is __________________?A. In the central core of the fluid
B. Uniformly distributed throughout the fluid
C. Mainly confined to a thin film of fluid near the surface
D. None of theseHarmonic mean temperature difference is given by_________________?
Harmonic mean temperature difference is given by_________________?A. √(ΔT1 . ΔT2)
B. 2 (ΔT1 . ΔT2)/(ΔT1 + ΔT2)
C. 2 (ΔT1 . ΔT2)/(ΔT1 – ΔT2)
D. (ΔT1 – ΔT2)/(ΔT1 . ΔT2)With increase in temperature, the thermal conductivity of steel___________________?
With increase in temperature, the thermal conductivity of steel___________________?A. Increases
B. Decreases
C. Remains unchanged
D. Increases exponentiallyPrandtl number is the ratio of________________?
Prandtl number is the ratio of________________?A. Momentum diffusivity to mass diffusivity
B. Momentum diffusivity to thermal diffusivity
C. Thermal diffusivity to mass diffusivity
D. Thermal diffusivity to momentum diffusivityNusselt number is the ratio of the ____________________?
Nusselt number is the ratio of the ____________________?A. Temperature gradient of the wall to that across the entire pipe
B. Temperature difference to the temperature gradient at the wall
C. Heat flux at the wall to that across the entire pipe
D. None of these