Fluid Mechanics Sheet 13

A discharge of $3.0 m^3/s$ flows in a canal, 2 m wide, at a depth of 1.2 m. If the width of the canal is reduced to 1.5 m by a canal transition, then neglecting losses, the depth of flow after the contractions will be -

The Hardy Cross method of hydraulic analysis of pipe networks, besides satisfying the continuity and energy principles, must also satisfy the condition that the -

An aeroplane having a wing span of 16 m and chord of 2.5 m weighs 11 tonnes. If it gets airborne at a velocity of 300 kmph, then the coefficient of lift is nearly -

If a multijet Pelton turbine has 'n' number of jets, then its specific speed is directly proportional to -

In a laminar flow through a circular pipe of diameter 20 cm, the maximum velocity is found to be 1 m/s. The velocity at a radial distance of 5 cm from the axis of the pipe will be -

A harbour model has a horizontal scale of 1/150 and a vertical scale of 1/60. The interval between successive high tides in the model will be nearly -

An open rectangular wagon 5 m long is filled with water to a level 0.5 m below the open top. The maximum acceleration (in $m/s^2$) at which it can be speeded up without spilling the water is nearly -

When a particular discharge is flowing in a horizontal pipe, a mercury-water U-tube manometer connected to the entrance and throat of a venturimeter fitted in the pipe recorded a deflection of 25 cm. If the same discharge flowed through the same pipe kept at an inclination of ${45}^0$ to the horizontal, then the corresponding deflection by the U-tube manometer will be -

A cylindrical vessel with a constant plane area of 1$m^2$ is rotated about its vertical axis such that the liquid inside the vessel is about to spill. If the height of the vessel is 2 m and the height of the paraboloid is 1 m, then the volume (in $m^2$) of the liquid in the vessel will be -

One end of a two dimensional water tank has the shape of a quadrant of a circle of radius, 2m. When the tank is full, the vertical component of the force per unit length on the curved surface will be -