Wind velocity measurement at height of 3m and 6m above the ground in the level are a yielded values of 3 m/sec and 6 m/sec respectively. Expected velocity at the height of 18 m under the same conditions will be ________ m/sec.
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A locality has a population of 36000. Daily water supplyper capita is 135 litres out of which 75% goes into the sewer. If the sewer is to be designed for 3 times the average discharge under design condition. Then the discharge for which sewer will be designed will be ________ m3/sec.Assuming the depth of sewer under design discharge is 75% of the total diameter of sewer.
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A district road with a bituminous pavement has a horizontal curve of 1000 m for a design speed of 75 kmph. The superelevation is ______
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At a horizontal curve portion of a 6-lane undivided carriageway, a transition curve is to be introduced to attain required superelevation. The design speed is 80 kmph and radius of the curve is 250 m. Assume length of wheel base of a longest vehicle is 6m, superelevation rate as 7% and rate of introduction of this superelevation as 1 in 200. The length of the transition curve required, if pavement is rotated about center, is ______ m.
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If in a concrete mix the fineness modulas of coarse aggregate is 7.4. The fineness modulas at fine aggregate is 2.4 and the economical value of the fineness modulas of combined aggregate is 6.2 then the proportion of fine aggregate is_____%.
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With what accuracy must a differance in elevation between two ends of a 30m tape be known if the differance in elevation is 2m and the accuracy ratio is to be atleast 1 in 20000 ____________ cm.
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The area of the plan on an old survey plotted to a scale of 5m to 1 cm now measures 90 cm2 as found by planimeter.The plan is found to have shrunk so that original line of 15cm length now measures only 14.5 cm. A note on the plan also states that the 30 m chain used was 10 cm too long. Then the true field area of survey will be ______ m2.
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A log of wood, 1m in diameter × 3m in length floats in freshwater. If the log has a specific gravity of 0.5, work out the angle subtended at the centre by the immersed part
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In an experiment, the tip of glass tube with an internal diameter of 3.0 mm is immersed to a depth of 2 cm into a liquid of specific gravity 0.9. Air is forced into the tube to form a spherical bubble just at the lower end of the tube.Then the surface tension in bubble in N/m will be ______ if_____.
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When the depth of flow is plotted against specific energy for a given triangular channel section and a given discharge the specific curve is obtained as follows
then velocity of flow for this discharge will be
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