(b) A uniform flow of 12 m/s is flowing over a doublet of strength 18 m/s. The doublet is in the line of the uniform flow. Determine: [10] a) the shape of the Rankine oval, b) the radius of the Rankine circle, c) value of streamline function at Rankine circle, d) resultant velocity at a point on the Rankine circle at an angle of 30 from the x-axis, e) value of maximum velocity on the Rankine circle and location of the point where velocity is maximum. 6(a) Using Buckingham's n-theorem, show that the velocity through a circular orifice is given by V = 2gH.. VH ' [10] Where H-head causing the flow; D = diameter of the orifice; = coefficient of viscosity; p= mass density g-acceleration due to gravity.