Engineering, 15.04.2020 04:13 priceisright11401
A single-start square-thread power screw has an input power of 3 hp at a speed of 2 rev/s. The screw has a major diameter of 2-in and a four threads per inch. The friction coefficients are 0.14 for the threads and 0.09 for the collar, with a mean collar diameter of 3-in.
(a) Find the maximum load that the screw can lift. (Express your answer to the nearest lb).
(b) Also calculate the efficiency of the screw.
Answers: 3
Another question on Engineering
Engineering, 04.07.2019 18:10
Abrake has a normal braking torque of 2.8 kip in and heat-dissipating cast-iron surfaces whose mass is 40 lbm. suppose a load is brought to rest in 8.0 s from an initial angular speed of 1600 rev/min using the normal braking torque; estimate the temperature rise of the heat dissipating surfaces.
Answers: 3
Engineering, 04.07.2019 18:20
Ahe-xe mixture containing a 0.75 mole fraction of helium is used for cooling electronics in an avionics application. at a temperature of 300 k and atmospheric pressure, calculate the mass fraction of helium and the mass density, molar concentration and molecular weight of the mixture. if the cooling capacity is 10 l, what is the mass of the coolant?
Answers: 3
Engineering, 04.07.2019 18:20
Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process
Answers: 1
Engineering, 04.07.2019 18:20
Water vapor initially at 10 bar and 400 °c is contained within a piston-cylinder assembly. the water lost heat to the surrounding according to isochoric (iso-volumetric) process until its temperature is 150 °c. the water is then condensed isothermally to saturated liquid. for the water as a system, calculate the work in kj/kg
Answers: 2
You know the right answer?
A single-start square-thread power screw has an input power of 3 hp at a speed of 2 rev/s. The screw...
Questions
Computers and Technology, 23.06.2020 16:01
Mathematics, 23.06.2020 16:01
English, 23.06.2020 16:01
Mathematics, 23.06.2020 16:01
Physics, 23.06.2020 16:01
English, 23.06.2020 16:01
SAT, 23.06.2020 16:01
