A.x4/5
B.x5/4
C.x3/5
D.x5/3
E.x1/2
Related Mcqs:
- The thickness of laminar boundary layer at a distance x from the leading edge over a flat plate varies as
- The Boundary layer on a flat plate is calld laminar boundary layer if
- Boundary layer thickness (?) is the distance from the surface of the solid body in the direction perpendicular to flow, where the velocity of fluid is equal to
- The miaimum thickness of boundary layer in a pipe of radius R is
- The turbulent flow is hydraulically smooth if the ratio height of roughness projection/the thickness of laminar sub-layer is less than
- The distance from pipe boundary, at which the point velocity is equal to average velocity in case of turbulent flow (when R is the radius of the pipe), is
- The percent transmission of incoming solar radiation through the top cover plate of flat-plate collectors is typically
- The efficiency of a flat-plate solar collector using water as a heat-exchange fluid is largest at which of the following temperature for the absorber plate? Assume Ta = 25?C.
- If the wind is blowing with a 10 kilometer per hour the dominant heat loss mechanism(s) between the top cover plate of flat-plate solar collector and the ambient air is / are
- Compare the heat loss between the absorber plate of flat-plate collector and the cover with that between the cover and the ambient air at steady state.
