Engineering, 14.09.2019 01:30 jahjah1158
The sound pressure level from a fan is measured to be 65 db at 3 m from the source. it can be assumed that the fan can be treated as a point source for the measurement. estimate the sound power of the fan if it is now placed in a 0.2 m x 0.2 m square duct. also, estimate the sound pressure level in the duct.
Answers: 1
Engineering, 04.07.2019 18:10, michellerosas
Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.
Answers: 3
Engineering, 04.07.2019 18:10, soreese02
An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature
Answers: 2
The sound pressure level from a fan is measured to be 65 db at 3 m from the source. it can be assume...
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