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1.Three shafts and four gears are used to form a geartrain which will transmit 7.5 kW from the motor at A to a machine tool at F. (Bear- ings for the shafts are omitted from the sketch.) Knowing that the frequency of the motor is 30 Hz, determine the magnitude of the couple which is applied to shaft (a) AB, (b) CD, (c) EF.
2.Consider a steel (iron) with 0.2 wt% C. Describe the changes in phases and its structure as it is heated under equilibrium conditions to 850 (deg C).
A compressor installed at a whalf (for loading container ships) is able to provide 6 bar.g pressure into the pressure reciever. The compressor is moved to a site that is 5000 ft above sea level (atmospheric pressure 0.85 bar.a
Compute the ratio of the nominal flexural strength of the beam to the maximum service load moment, and compare your findings to the ACI load factors and strength reduction factor.
assuming that the contaminant travels mainly by advection, propose any operational changes to the given layout to prevent the river from being contaminated.
Find the uniform annual amount that is equivalent to a uniform gradient series in which the first year's payment is $500, the second year's payment is $600, the third year's payment is $7000,
An invar tape haviong a nominal length of 100ft and a croos -sectional area of 0.005sq in. was standardized under a tesion of 15lb. when the tape wa
During a test flight in which a 9000-kg helicopter starts from rest at t = 0, the acceleration of its center of mass from t =0 to t =10 s is a=(0.6t)i+ (1.8 0.36t)j m/s2.
Design the shear reinforcement, vertical U stirrups for independent T beam. The beam spans 24 ft face to face between simple supports, has an effective depth d= 31 in.
Tensile testing of human cortical bone is conducted to obtain the elastic moduli. The cross-sectional geometry of bone varies along its length, although the cross-section can be approximated as hollow and circular,
The drawdown in another observation well 60 m from the pumping well is 1.1 m. Calculate (a) the hydraulic conductivity of the aquifer, (b) the expected drawdown in the pumping well,
The motor A delivers 3000 hp to the shaft at 1500 rev/min, of which 1000 hpis removed by gear B and 2000 hp is removed by gear C. Determine
Two tanks (Tank A and Tank B) are separated by a partition. Initially Tank A contains 2 kg of steam at 1 MPa and 300 ?C while Tank B contains 3 kg of saturated liquid-vapor mixture at 150oC with a vapor mass fraction of 50%
Discuss the dangers of optimization in terms of minimum section to support loads. In other words, how would optimizing for bending stresses affect the shear capacity of a section
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