Engineering, 01.10.2019 01:00 live4dramaoy0yf9
The assembly consists of a brass shell (1) fully bonded to a ceramic core (2). the brass shell [e = 85 gpa, α= 20.8 × 10−6/°c] has an outside diameter of 64 mm and an inside diameter of 39 mm. the ceramic core [e = 290 gpa, α= 3.5 × 10−6/°c] has a diameter of 39 mm. at a temperature of 15°c, the assembly is unstressed. assume l = 320 mm. determine the largest temperature increase δt that is acceptable for the assembly if the normal stress in the longitudinal direction of the brass shell must not exceed 82 mpa.
Answers: 3
Engineering, 04.07.2019 16:10
The force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.
Answers: 1
Engineering, 04.07.2019 18:10
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 18:20
Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above
Answers: 1
Engineering, 04.07.2019 18:20
Refrigerant-134a enters the compressor of a refrigerator as superheated vapor at 0.14 mpa and -10°c at a rate of 0.05 ka/s and leaves at 0.8 mpa and 50°c. the refrigerant is cooied in the condenser to 0.72 mpa and 26'c. it is then throttled to 0.15 mpa. sketch the t-s diagram for the system and evaluate: 6) the rate of heat removai from the refrigerated space (kw), it) the power input to the compressor (kw), ii) the isentropic efficiency of the compressor (%), and iv) the cop of the refrigerator.
Answers: 2
The assembly consists of a brass shell (1) fully bonded to a ceramic core (2). the brass shell [e =...
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