Engineering, 14.05.2021 03:20 mariaramirez013
A helical compression spring is fabricated from ASTM A229 oil-quench-tempered cold-drawn steel wire having a diameter d = 0.9 mm, a modulus of rigidity G = 80 GPa, and a modulus of elasticity E = 200 GPa. The spring has 14.5 active coils with a mean diameter D = 10 mm. The ends are squared-and-ground. The spring is supported between flat parallel surfaces (fixed ends).
Required:
a. Determine the spring rate.
b. Determine the minimum hole diameter for the spring to operate in.
c. Determine the total number of coils needed.
d. Determine the solid length.
e. Determine a static factor of safety based on the yielding of the spring if it is compressed to its solid length.
Answers: 3
Engineering, 04.07.2019 18:10
The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false
Answers: 1
Engineering, 04.07.2019 18:10
Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k
Answers: 2
Engineering, 04.07.2019 18:20
Find the minimum film thickness for a journal bearing with the data below. shaft diameter, d-50 mm, clearance ratio, cdratio? 0.001, shaft speed, n 2000 rpm; bearing length. i 200 mm; eccentricity ration, ? -0.55. ( note, cdratio-ca/d) the minimum film thickness is um
Answers: 2
Engineering, 04.07.2019 19:10
How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?
Answers: 2
A helical compression spring is fabricated from ASTM A229 oil-quench-tempered cold-drawn steel wire...
English, 15.01.2020 02:31
Mathematics, 15.01.2020 02:31
Biology, 15.01.2020 02:31
Mathematics, 15.01.2020 02:31
Health, 15.01.2020 02:31
Mathematics, 15.01.2020 02:31
Spanish, 15.01.2020 02:31
English, 15.01.2020 02:31
Mathematics, 15.01.2020 02:31
Health, 15.01.2020 02:31