a)
On a flat plate of 2m (length)x 1m(width), experiments were conducted in a
wind tunnel with a wind speed of 50km/h. the plate is kept at such an angle
that the coefficient of drag and lift are 0.18 and 0.9, respectively. Determine:
i)
Drag force,
ii)
Lift force,
iii)
Resultant force, and
iv)
Power exerted by the air stream on the plate.
(10 marks)
b)
A horizontal pipe 150mm in diameter is joined by sudden enlargement to a
225mm diameter pipe. Water is following through it at the rate of 0.05 m3s-1.
find:
i)
Loss of head due to abrupt expansion.
ii)
Pressure difference in the two pipes.
(10 marks)
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