A francis turbine is used in an installation to generate power. The power output is 115000 hp under a head of 480ft. The outer radius of the rotor is 6.75ft; the inner radius is 5.75ft. The rotational speed is 180 RPM, and the blade height is 1.5ft. The turbine efficiency is 0.95 percent. The absolute velocity leaving the rotor is in the radical direction. Required:
Determine the angle that the absolute velocity entering the rotor makes with radial direction.

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false