Two pipelines, one carrying oil (mass density 900 kg/m³) and the other water, are connected to a manometer as shown in figure. By what amount the pressure in the water pipe should be increased so that the mercury levels in both the limbs of the manometer becomes equal? (Mass density of mercury = 13550 kg/m³ and g = 9.81m/s²) OF 3 m 43 hb (Water) LELSELL 20 cm 1.5 m Mercury
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- The reading of an automobile fuel gage is proportional to the gage pressure at the botoom of the tank. If the tank is 32 cm deep and is contaminated with 3cm of water. A.) If the tank is full of gasoline what should be the reading at the page in Pa? Use Ywater=9790N/m^3, Ygasoline=6670N/m^3 and Yair=11.8N/m^3 Choices: 1934,2839,3132,2134 B.) How many centimeters of air remains at the top when the gauge indicates full? Choices: 3.75,1.41,4.42,2.36 C.) If the tank is 0.5m^2 in area, calculate the volume of gasoline when the gage reads full Choices: 138 L,160L,145L,123LA liquid is flow throw Rotameter to a tank of size ( L x W x H ) and it is required to full the tank to level of H as shown in Figure . What time is required to full the tank by this liquid ? What time is required to drop the liquid in the tank to from level H to D by rectangular notch ?The truncated cone shown has 0 = 60°. How long does it take to draw the liquid surface down from h = 5 m to h = 2 m? Ans: 30.4 minutes 1 m 2 80 mm C = 0.80
- Fluid mechanics- Bernoulli's Equation along a streamline: The flow-metering device shown consists of a stagnation probe at station 2 and a static pressure tap at station 1. The velocity at station 2 is twice that at station 1. Air with a density of 1.2kg/m3 flow through the duct. A water manometer is connected between the stagnation probe and the pressure tap, and a deflection of 10cm is measured. What is the velocity at station 2?A vertical conduit is carrying oil (S=0.95) as shown in figure 2. A differential mercury manometer is tapped into the conduit at points A and B. Determine the difference in pressure between A and B when h=3in. What is the difference in piezometric head between A and B?What is the mass (lbm) of an object that has a base area of 4 inch2 which exerts a pressure of 25 psi? 2.) Determine the dynamic viscosity (Pa-sec) and kinematic viscosity (m2/s) of water with a specific weight of 9.81 kN/m3, if a Falling Sphere Viscosimeter test is conducted using an aluminum sphere that has a diameter of 10 mm and a specific weight of 28.06 kN/m3. The theoretical terminal velocity of the sphere is 0.650 m/s. Round off your answer to 3 decimal places. 3.) Given the water tank A in an orifice setup that transfers water to tank B, determine the theoretical and actual velocity and flow rate if the time it takes to fill up tank B is 20 sec. 4.) Given the computed velocities and flow rates in Question 3, determine the coefficient of contraction, velocity, and discharge. Assume the diameter of vena contracta to be 4mmø.
- 1. In calibrating a 10-mL pipet, a measured volume of water was transferred to a tared flask and weighed, yielding a mass of 9.9814 g. (a) Calculate, with and without correcting for buoyancy, the volume of water delivered by the pipet. Assume that the density of water is 0.99707 g/cm3 and that the density of the weights is 8.40 g/cm3. (b) What are the absolute and relative errors introduced by failing to account for the effect of buoyancy? Is this a significant source of determinate error for the calibration of a pipet? Explain. 2. Repeat the questions in problem 1 for the case when a mass of 0.2500 g is measured for a solid that has a density of 2.50 g/cm3. 3. Is the failure to correct for buoyancy a constant or proportional source of determinate error?Q.5 Determine the volumetric flow of water in m3/hr flowing in a pipehaving a diameter of 40 mm through an orifice having a diameter of 20 mm.Manometer reading across the tapping is 15 cm of Hg. Assume correctionfactor = 1. Reynolds number Ra is 105 . Assume density of water = 1000 kg/m3and kinematic viscosity is 10–2 stokes (cm2/sec). Also calculate the pressuredifference at the tappings. Assume Cd = 0.61.The actual velocity in the contracted section of a jet of liquid flowing from a 50mm diameter orifice is 9.21 m/s under a head of 4.57 m. what is the value of coefficient of velocity? Ans in 4 decimal places.
- An open cylindrical tank 800mm in diameter and 2000mm high contains water to a depth of 1.6m. It is rotated about its vertical axis at 13 rad/s. How many liters of water are spilled? Use density of water as 1000kg/m3 and specific weight as 9.81kN/m3Answer and show complete solution.A student measures the length of his test paper with a ruler for 5 times because his/ her instructor asks him/her to do so. The observations done by the student were 29.72cm, 29.73cm, 29.71cm, 29.71cm, and 29.72cm. He also measured the width of the paper four times and the observations were 21.10cm, 21.13cm, 21.08cm, and 21.00cm. a. What is the most probable value (MPV and Probable Error) of the length and width of the paper? b. What is the relative precision (using Probable Error and MPV) of length? Width of the paper? c. What is the most probable value (MPV and Probable Error) of the area of the paper? d. If the true length of the paper is 29.5cm, is the ruler too long or too short?3. A brass sphere (sp.gr. 8.60) is placed in a body of mercury. If the diameter of the sphere is 30cm. a. What minimum force would be required to hold it submerged in mercury? b. What is the depth of floatation of the sphere when it is floating freely?