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A cantilevered steel pipe tower, 80 m tall is being considered for a new wind turbine. The weight of the turbine is 3,400 kN. The tower under consideration will have a constant outer diameter of 4 m and a wall thickness of 6 cm. The turbine is to have three blades. The nominal rotor speed is 12 rpm. Would the tower be considered stiff, soft or soft–soft? Suppose that a tapered tower is being considered instead. How would the natural frequency be analyzed? Assume that the weight density of steel is 76.8 kN/m3 and its elasticity is 2.07 x 1011 Pa.
a particle has a position vector given by r 38t 46t - 4t2 where r is in meters and t is in seconds. find the
design a computer programme using freudestein equation to synthesise a four bar linkage using three precision points also using more than three points.
three equal charges of magnitude q6.00 uc are located at three corners of a square edge length d2.9 cm. a negative
Velocity and Acceleration Analysis of mechanism. The mechanism in Fig. 5.54 has the dimensions: AB=200 mm, AC=600 mm, BD=1000 mm, La=150 mm, and Lb=250 mm. The driver link 1 rotates with a constant angular speed of n=60 rpm. Find the velocities and t..
If the efficiency of the turbine in converting the mechanical energy given up by the fluid to the turbine shaft is 89% (nt = 0.89), calculate the friction loss in the turbine in J/kg.
the axial velocity profile for laminar flow in a pipe is given by ur umax 1-rrrr where r is radial position r is the
an aluminium bottle weighs 10 kgs when empty and has an internal volume of 20 liters. it is filled with 5 kgs of
a blower handles 1 kgsec of air at 20 deg c and consumes a power of 15 kw. the inlet and outlet velocities of air are
a piston-cylinder device connected to a feeding line by a valve contains air at 7oc and 210 kpa. initially a linear
An ADIABATIC steam turbine works between inlet pressure of 100 bar and outlet pressure of 25 bar. The inlet temperature is 600 degrees Celsius. Outlet steam has a quality of 90 percent. You want to know if this facility is fit to generate your need o..
A manometer on the discharge pipe of a pump handling 8.4m^3/min of water shows a pressure of 3.7*10^5 Pa. The vacuum gage on the suction pipe shows a vacuum of 21 cm Hg. The vertical distance between the places of connection of the manometer and the ..
a mixture is 10.0 mole ethyl alcohol75.0 mole ethyl acetate c4h8o2 and 15.0 mole acetic acid. calculate the mass
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