Which of the following is not true about hydraulic systems?
a. over half of all system probl...
Engineering, 09.11.2019 00:31 ymuttmutt3890
Which of the following is not true about hydraulic systems?
a. over half of all system problems are traced directly back to the oil
b. fire-resistant fluid should be used in applications where human safety is of concern
c. hydraulic fluid must have good lubricity to prevent wear between closely fitted working parts
d. in hydraulic systems, the operating temperatures must be kept between 170°f and 180°f
e. none of the above
Answers: 1
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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
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Ahelical coil spring has a mean diameter of 50 mm, a wire diameter of 5.5 mm and is wound with a pitch of 10 mm. the spring steel has an ultimate strength of 1250 mpa. find the force needed to compress the spring solid and the wire stress in this condition. state whether the spring will return to its initial length.
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