4.) The hydraulic jack shown in Fig. 42 is filled with oil at 55 lb/ft. Neglecting the weight of the two pistons, what force F on the handle is required to support the 2200-lb weight?
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- The storage tank contains lubricating oil of specific weight (y). In one inclined side of the tank, there is a D m diameter circular inspection door, mounted on a horizontal shaft along the centre line of the gate. The oil level in the tank rests h m above the mounted shaft. (Please refer table 01 for relevant y, D and h values) Describe the hydrostatic force and centre of pressure with the aid of a free body diagram of the inspection door. Calculate the magnitude of the hydrostatic force and locate the centre of pressure. Estimate the moment that would have to be applied to the shaft to 450 open the gate. Stop If the oil level raised by 3 m from the current level, calculate the new moment required to open the gate. B specific weight = 7100 D = 0.7 m h = 25 m do last part only Figure 01The storage tank contains lubricating oil of specific weight (y). In one inclined side of the tank, there is a D m diameter circular inspection door, mounted on a horizontal shaft along the centre line of the gate. The oil level in the tank rests h m above the mounted shaft. (Please refer table 01 for relevant y, D and h values) Describe the hydrostatic force and centre of pressure with the aid of a free body diagram of the inspection door. Calculate the magnitude of the hydrostatic force and locate the centre of pressure. Estimate the moment that would have to be applied to the shaft to 450 open the gate. Stop If the oil level raised by 3 m from the current level, calculate the new moment required to open the gate. B specific weight = 7100 D = 0.7 m h = 25 m Figure 0113. A U-tube differential manometer connects two pressure pipes A and B. Pipe A contains carb tetrachloride having a specific gravity 1.594 under a pressure of 11.772 N/cm2 and pipe B contains oil of sp. gr. 0.8 under a pressure of 11.772 N/em. The pipe A lies 2.5 m above pipe B. Find the difference of pressure measured by mercury as fluid filling U-tube. 14. A differential manometer is connected at the two points A and B as shown in Fig. 2.25. At B air pressu is 7.848 N/cm² (abs.), find the absolute pressure at A. [Ans. 31.36 cm of mercury] [Ans, 6.91 N/em) AIR B WATER OIL Sp. gr.0.8 OIL Sp. gr. 0.8 50'cm 30 cm om 100 cm 50 cm 10 cm MERCURY Sp. gr. 13.6 WATER Fig. 2.25 Fig. 2.26
- A U-tube differential manometer connects two pressure pipes A and B. Pipe A contains carbon tetrachloride having specific gravity 1.594 under a pressure of 117.72 kPa and pipe B contains oil of sp. gr. 0.8 under a pressure of 117.72 kPa. The pipe lies 2.5 m above pipe B. Find the difference of pressure measured by mercury as fluid filling U-tube.A. 120.58. Choose the best answer below: a.31.36 cm of mercury b.25.11 cm of mercury c.64.74 cm of mercury d.13.62 cm of mercury3. [Ch4 - 1] What is the head loss and corresponding pressure drop (in units of bars) across a 30- mm-wide open gate valve when oil (SG = 0.90) flows through at a rate of 4 x 10-3 m/s? 4. [Ch4 – 2] Oil (SG = 0.80, v = 10- m/s) flows at a rate of 2 x 10-3 m'/s through a 20-mm- diameter commercial steel pipe. What is the equivalent length of a 20-mm-half open gate valve placed in the line?This vertical pipeline with attached gage and manometer contains oil and mercury as shown. The manometer is open to the atmosphere. There is no flow in the pipe. What will be the gage pressure reading at A? correction: 3.75 mm should be 375 mm en Me Do not write the unit. You will only input the numerikal answer in the space provided. Unit of the Correct Answer. kPa Decimal Places required in the firal answer 3
- Water flows steadily downward through the pipe shown in the figure below. Viscous effects are negligible, and the pressure gage indicates the pressure is zero at point (1). Determine (a) the flowrate and (b) the pressure at point (2). (a) Q = (b) p2 = 2.1ft 3.1ft ↓s -0.12 ft (1) 5 -0.1 ft -free jet ft³/s lb/ft²O -0.13 Darcy Experiment A set-up of Darcy Experiment involves measuring the pressure head at two piezometers separated a distance, L. Given the set-up shown, determine the hydraulic gradient if the hydraulic head at (1) is 24 inches, hydraulic head at (2) is 11 inches, and the travel distance is 100 inches. O 7.7 O -7.7 (1) O 0.13 e - - - -Gasoline flows steadily downward through the pipe shown in the figure below. Viscous effects are negligible, and the pressure gage indicates the pressure is zero at point (1). Determine (a) the flowrate and (b) the pressure at point (2). (a) Q = (b) p2 = 2.1ft 3.1ft •(1) ↓² -0.12 ft -0.1 ft -free jet ft³/s lb/ft²
- 13. A U-tube differential manometer connects two pressure pipes A and B. Pipe A contains carbo tetrachloride having a specific gravity 1.594 under a pressure of 11.772 N/em and pipe B contains ofl of sp. gr. 0.8 under a pressure of 11.772 N/em. The pipe A lies 2.5 m above pipe B. Find the difference of pressure measured by mercury as fluid filling U-tube. 14. A differential manometer is connected at the two points A and B as shown in Fig. 2.25. At B air pressu is 7.848 N/cm (abs.), find the absolute pressure at A. [Ans. 31.36 cm of mercuryl (Ans, 6.91 Nicm) AIR WATER OIL Sp. gr.0.8 OIL Sp. gr. 0.8 50'cm 30 cm 100 am 60 cm 10 cm MERCURY Sp. gr.13.6 WATER Fig. 2.25 Fig. 2.26A pipe carrying oil of sp gr 0 877 changes in A pipe carrying oil of sp gr 0.877 changes in size from 150mm at section E to 450mm at section R Section E is 3 66m lower than R section R. Section E is 3.66m lower than R and the pressures are 91.0kPa and 60.3kPa, respectively. If the discharge is 0.146m3 respectively. If the discharge is 0.146m /s, determine the lost head and the direction of flow.Water flows from a pressurized tank, through a valve and out a pipe. If Q= 0.1 ft/s, Az 10 ft, P2=0 psig, D = 1lin., ht 5V/2g, please answer the following questions: 1) the pressure in the tank in psig, 2) sketch the EGL of the system., 3) sketch the HGL of the system Air under pressure Water Partly open valve Figure 3. A water tank discharges water through a partly open valve in a pipe with a diameter d