Under which of the following conditions the closure of valve is considered rapid? (where L = length of pipe, C = velocity of pressure wave produced due to water hammer.)

Related MCQs

• The distance from pipe boundary, at which the point velocity is equal to average velocity in case of turbulent flow (when R is the radius of the pipe), is
• The velocity in a 2 cm-diameter pipe is 20 m/s. If the pipe enlarges to 5 cm diameter velocity, in m/s, will be
• At point A in a pipe line carrying water the diameter is 1 m, the pressure 98 kPa and the velocity 1 m/s. At point B, 2 m higher than A, the diameter is 0.5 m and the pressure 20 kPa. The direction of flow would be
• Due to which of the following phenomena water hammer is caused?
• A U-tube manometer, attached to an air pipe, measures 20 cm of mercury. The pressure, in kPa, in the air pipe is
• Hammer blow in pipe occurs when
• 2𝑔 148. The power transmitted through the pipe is maximum when head lost due to friction in the pipe is equal to
• The total-energy-line in pipe flow is a graphical representation of the Bernoulli’s equation and represents the sum of velocity head, pressure head and the elevation head above:
• The flow in a pipe whose valve is being opened or closed gradually is an example of
• Four piezometer openings in the same cross-section of a cast iron pipe indicate the following pressure for simultaneous reading: 43, 42.6, 42.4 37 mm Hg. What value should be taken for the pressure?