Engineering, 14.09.2019 02:30, tatumleigh04
Chips of width l =1 inch on a side are mounted to a substrate that is installed in an enclosure whose walls and air are maintained at a temperature of tsur = t[infinity]=25c. the chips have an emissivity of ε=0.60 and a maximum allowable temperature of ts =87c. 4.a) if heat is rejected from the chips by radiation and natural convection, what is the maximum operating power of each chip? the convection coefficient depends on the chip-to-air temperature difference and may be approximated as h =c(ts – t[infinity]) 1/4, where c = 4.2 w/m2 /k5/4. this is empirical formula, so simply substitute and solve. no need to put into the formula sheet.
Answers: 3
Engineering, 03.07.2019 14:10, aliceohern
The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite
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Engineering, 04.07.2019 16:10, TheOriginalMeyah
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Chips of width l =1 inch on a side are mounted to a substrate that is installed in an enclosure whos...
Mathematics, 23.06.2021 02:50
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Mathematics, 23.06.2021 02:50