1.A cylindrical tank 5-m in diameter is filled with water to 3-m depth. A very short horizontal pipe with 20-cm diameter and rotary valve is used to drain the tank from the bottom. How long does it take to drain the tank to 50%?
2.Water flows through a 4-cm pipe, wrought iron, horizontal pipeline 50-m long from point A to B, and contains a fully opened gate valve and two elbows (R/D = 4). If the pressure downstream at B is 192 KPa and flow rate is 0.006 m^3/s, what is the pressure at point A?
3.A 100 mm long rod has a diameter of 15 mm if an axial tensile load of 10kn is applied to it determine the change in its diameter
E = 70
Gpa, v = .35