Engineering, 07.06.2020 03:58 Theyfall4raven
Switching function L controls the stairway electric lights in a 2-story building. Motion sensors S1 and S2 installed near the stairway ends at the 1 st and the 2 nd floors turn on electric light L when any of the motion sensor signals is 1. (L =1 when the light is on). The electric light is disabled by daylight sensor E (E=1 when the background light is sufficient). There is also manual switch M to override the automatic control (L=1 unconditionally when M = 1). Function L is described by the algebraic expression
L (S1, S2, E, M) = (S1 + S2) E’ + M
Obtain the following: a. Schematics for implementation of function L with requested logic gates. The gates may have any number of inputs.
1. AND, OR gates and inverters (NOT)
2. Any number of AND gates and inverters (OR gates are not available)
3. Any number of OR gates and inverters (AND gates are not available),
Can someone explain with details numbe 2 and 3
Answers: 1
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Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.
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Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
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Switching function L controls the stairway electric lights in a 2-story building. Motion sensors S1...
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