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Fluid Mechanics: Nuclear Quiz 1

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Question 1

A large tank shown in figure has a vertical pipe 70 cm long and 2 cm in diameter. The tank contains an oil of density 920 $Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image056.png$ and viscosity 1.5 poise. The velocity thourgh the tube when the height of oil level of the tank is 0.80 m above the pipe inlet is____m/s.

$Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image235.png$

Question 2

90% iceberg volume is below surface and only 10% is visible above surface of sea water. p_seawater = 1025 kg/m³. The density of iceberg (in kg/m³) is

Question 3

The cylinder is rotated about the central axia as shown in figure. The force (in N) on the bottom of the cylinder, when the rotation speed is such that the water just touches the point A will be

$Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image092.png$

Question 4

Two pipe systems in series are said to be equivalent when

Question 5

When time of closure tc = L/vo (where L is length of pipe and v, is speed of pressure wave), the portion of pipe length subjected to maximum head is

Question 6

A rectangular channel 4.5m wide, laid at slope of 0.0040. The uniform flow occurs at a depth of 1.8m. Determine the height of hump to be constructed, such that there is no change in the U/S condition.take n= 0.017

Question 7

To lift water from a ground reservoir to an Over head tank of capacity 0.90 cu.m. capacity , what is the appropriate H.P. of centrifugal pump to be installed , such that the OHT gets filled up in 1 hour. Consider the difference in water level as 50m. Assume the efficiency as 65%.

Question 8

Air flowa with a uniform velocity in apipe with the velocities measured along the centerline at 40 cm increments as shown in figure. If the density of air at point 2 is 1.2 $Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image056.png$ , the density gradient at point 2 is ______ $Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image206.png$ .

$Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image207.png$

Question 9

The pressure at the nose of a $Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image156.png$ scale model tested in freshwater at 14.8 m/s is 1.32 $Description: E:\Gate\SSC JE Civil Part 1-Done\04_FM_BLok_files\image157.png$ greater than the free stream pressure upstream of the topedo nose. What would be the free stream pressure upstream of its nose? (Specific gravity of seawater is 1.025, with its dynamic viscosity being the same as that of freshwater and Reynold’s condition prevails).

Question 10

A pitot tube with coefficient of 0.98 is used to measure the velocity of water in a pipe. If the head difference of U tube holding mercury (of relative density 13.6) is 12cm.What is the velocity of water(m/s)?(Take g =10m/s²)

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ESE & GATE CE Fluid Mechanics

Jul 25ESE & GATE CE