Fluid Mechanics Questions PDF

1. What is fluid mechanics?\ a) Study of fluid behaviour at rest\ b) Study of fluid behaviour in motion\ c) Study of fluid behaviour at rest and in motion\ d) Study of fluid behaviour at rest and in motion 2. Which of the following is the basic principle of fluid mechanics?\ a...

1. What is fluid mechanics?\ a) Study of fluid behaviour at rest\ b) Study of fluid behaviour in motion\ c) Study of fluid behaviour at rest and in motion\ d) Study of fluid behaviour at rest and in motion 2. Which of the following is the basic principle of fluid mechanics?\ a) Momentum principle\ b) Energy equation\ c) Continuity equation\ d) All of the mentioned 3. If a person studies about a fluid which is at rest, what will you call his domain of study?\ a) Fluid Dynamics\ b) Fluid Mechanics\ c) Fluid Statics\ d) Fluid Kinematics 4. What is the pressure in Pascals at a depth of 1m below the water surface?\ a) 98100 Pa\ b) 980 Pa\ c) 98 Pa\ d) 1 Pa 5. The pressure at any given point of a non-moving fluid is called the \_\_\_\_\_\_\_\_\_\_\_\_\ a) Gauge Pressure\ b) Atmospheric Pressure\ c) Differential Pressure\ d) Hydrostatic Pressure 6. A Hydraulic press has a ram of 30 cm diameter and a plunger of of 2 cm diameter. It is used for lifting a weight of 35 kN. Find the force required at the plunger.\ a) 233.3 kN\ b) 311.1 kN\ c) 466.6 kN\ d) 155.5 kN 7. The diameters of a small piston and a large piston of a hydraulic jack are 45 mm and 100 mm respectively.Force of 0.09 kN applied on smaller in size piston. Find load lifted by piston if smaller in size piston is 40 cm above the large piston. The density of fluid is 850 kg/m3\ a) 60 N/cm^2^\ b) 12 N/cm^2^\ c) 30 N/cm^2^\ d) 10 N/cm^2^ 8. find the position of centre of buoyancy for a wooden block of width 3.5 m and depth 1 m, when it floats horizontally in water. The density of wooden block id 850 kg/m3 and its length 7.0 m.\ a) 0.95\ b) 0.85\ c) 1.05\ d) 1.65 9. A stone weighs 450 N in air and 200 N in water. Compute the volume of stone.\ a).025 m^3^\ b).05 m^3^\ c).075 m^3^\ d) None of the mentioned 10. Find the density of metallic body which floats at the interface of mercury of sp.gr 13.6 and water such that 40 % of its volume is sub-merged in mercury and 60% in water.\ a) 6040 kg/m^3^\ b) 12080 kg/m^3^\ c) 24160 kg/m^3^\ d) 3020 kg/m^3^ 11. Water 1 m deep is flowing steadily at 10 m/s in a channel 4 m wide. The channel drops 3 m at 30 deg, and simultaneously narrows to 2.5 m as shown in the accompanying sketch. Determine the two possible water depths at downstream station B. Neglect all losses. 12. Find P~2~