Engineering, 18.02.2020 04:44 Uniquestudies
A square silicon chip would be damaged if its surface temperature exceeds 50C. A cooling fan blows air at 20C over the chip. This causes forced convection heat transfer. Convection heat transfer coefficient is calculated to be 100 W/m²K (you will learn how to calculate this coefficient in Heat Transfer course, ME3710). The chip needs an electrical input power of 0.2 W to operate. Assuming steady state, design the geometry of this chip to prevent any damage. Note that minimizing the dimensions is always an objective of engineering designs, as it reduces costs and occupied space.
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
A-mn has a cubic structure with a0 0.8931 nm and a density of 7.47 g/cm3. b-mn has a different cubic structure, with a0 0.6326 nm and a density of 7.26 g/cm3. the atomic weight of manganese is 54.938 g/mol and the atomic radius is 0.112 nm. determine the percent volume change that would occur if a-mn transforms to b-mn.
Answers: 2
Engineering, 04.07.2019 18:20
Air flows over a heated plate à t a velocity of 50m/s. the local skin factor coefficient at a point on a plate is 0.004. estimate the local heat transfer coefficient at this point.the following property data for air are given: density = 0.88kg/m3 , viscosity 2.286 x 10 ^-5 kgm/s , k = 0.035w/mk ,cp = 1.001kj/kgk. use colburn reynolds analogy.
Answers: 1
Engineering, 04.07.2019 19:10
What is a monomer? how do they form a ploymer from the view point of chemical bonding?
Answers: 1
A square silicon chip would be damaged if its surface temperature exceeds 50C. A cooling fan blows a...
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