Engineering, 11.07.2019 01:10 ayri9893
The poppet of the pressure relief valve must move 0.2 in from the fully closed position in order to pass the full pump flow at the prv setting (full pump flow pressure). the poppet has a 0.85 in3 area on which system pressure acts. assuming that the relief valve cracking pressure should be 15% higher than the pressure required to overcome the hydraulic cylinder punching operation, find the required a) spring constant of the compression spring in the prv, b) initial compression of the spring from its free-length condition as set by the spring-adjustment mechanism of the prv (poppet held against its seat by spring).
Answers: 3
Engineering, 03.07.2019 14:10
If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.
Answers: 3
Engineering, 04.07.2019 18:10
Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.
Answers: 2
Engineering, 04.07.2019 19:10
Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?
Answers: 3
Engineering, 06.07.2019 03:20
Aload of 10kn is to be suddenly applied to the free end of a vertical rod of length 500 mm, the upper end being rigidly fixed. 190 mechanical science what should the diameter of the rod be if the maximum stress in the rod is not to exceed 100 mpa? the tensile modulus of the rod is 205 gpa.
Answers: 2
The poppet of the pressure relief valve must move 0.2 in from the fully closed position in order to...
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