A metallic body floats at the interface of mercury of specific gravity 13.6 and water in such a way that 30% of its volume is submerged in mercury and 70% in water. Find the density of the metallic body. Leave a Comment / Buoyancy and floatation, Fluid Mechanics, Numerical (Water) / By Ashok Sapkota / February 5, 2025
A simple U-tube manometer containing mercury is connected to a pipe in which a fluid of specific gravity 0.8 and having vacuum pressure is flowing. The other end of the manometer is open to the atmosphere. Find the vacuum pressure in the pipe, if the difference of mercury level in the two limbs is 40 cm and the height of fluid in the left limb from the centre of the pipe is 15 cm below. Leave a Comment / Fluid Mechanics / By Ashok Sapkota / July 29, 2025
A lawn sprinkler shown in the figure has 0.8cm diameter nozzle at the end of a rotating arm and discharges water at the rate of 12m/s. Determine the torque required to hold the rotating arm stationary. Also determine the constant speed of rotation of the arm, if free to rotate. Leave a Comment / Application of Momentum Principle, Fluid Mechanics, Numerical (Water) / By Ashok Sapkota / March 21, 2025
Find the discharge through a circular pipe of diameter 4.0 m, if the depth of water in the pipe is 1.33 m and pipe is laid at a slope of 1 in 1500. Take the value of Chezy’s constant = 60. Leave a Comment / Fluid Mechanics, Numerical (Water) / By Shreeya Khanal / August 7, 2025
A rectangular tank 6m long, 2m wide and 2m deep contains water to a depth of 1m. It is accelerated horizontally at 2.5 m/s2 in the direction of its length. Leave a Comment / Fluid Mechanics, Numerical (Water), Relative equilibrium / By Ashok Sapkota / February 8, 2025
The closed tank in the fig. is at 200 C. If the pressure at point A is 96 Kpa absolute, what is the absolute pressure at point B? What percent error results from neglecting the specific weight of air? (Take sp wt of air = 0.0118 KN/m3) Leave a Comment / Fluid Mechanics, Numerical (Water) / By Ashok Sapkota / December 30, 2024
In a hydraulic coupling, the speeds of the driving and driven shafts are 800 r.p.m. and 780 r.p.m. respectively. Find: (a) the efficiency of the hydraulic coupling, and (b) the slip of the coupling. Leave a Comment / Fluid Mechanics, Numerical (Water) / By Shreeya Khanal / July 31, 2025
Calculate the Mach number at a point on a jet propelled aircraft which is flying at 900 km/hour at sea-level where air temperature is 15°C. Take k = 1.4 and R = 287 J/kg K. Leave a Comment / Fluid Mechanics, Numerical (Water) / By Shreeya Khanal / August 11, 2025
