Hydraulics Questions

• The notch angle for maximum discharge over a triangular notch, is
• The flow in a channel is said to be non-uniform, if
• The gases are considered incompressible if Match number is
• If H is the depth of water retained by a vertical wall, the height of centre of pressure above the bottom is
• To replace a pipe of diameter D by n parallel pipes of diameter d, the formula is
• In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to
• For maximum power transmission through a nozzle, (where hf is the head lost due to friction)
• The hydrostatic force acts through
• An open container filled with water is moved vertically upward with a uniform linear acceleration. The pressure at its bottom will be
• Mass density of liquid (ρ) is given by
• The flow in which each liquid particle has a definite path and the paths of adjacent particles do not cross each other, is called
• In an inclined position, a venturimeter records
• Weber number is the ratio of inertia force to
• The ratio of time for completely emptying the hemispherical tank and circular horizontal tank of equal radii both fitted with similar orifices at their bottoms is :
• Equation of continuity of flow is based on the principle of conservation of
• If a1 and a2 are the cross-sectional areas of a tank and orifice, h the height of water level in tank above the centre of the orifice, the velocity of approach is given by
• For a most economical rectangular channel, the width of the channel must be
• The pressure rise due to water hammer depends upon
• The centre of pressure of a vertical plane immersed in a liquid is at
• In an inclined pipe, the pressure difference at its two ends is due to