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For computer chip of 10mm (length), 10 mm(width) is operated by power of 0.345 watt, which surrounded by coolant material of temp of 70 F. The Internal energy rate is 3.5J/sec and kinetic energy rate is -4.5J/sec
Assuming PE energy is no changed.
Find the Surface Temperature in F of the computer chip during the convection heat transfer. (Hints:heat convection, Q= -hAdt, heat transfer coefficient , h=120 W/sq.m K, W=J/sec, Apply 1st law of Thermodynamics)
Give a narritve for a cruise control system of a car. Include all relevant inputs and outputs. Design a flowchart and ladder diagram. Every element on the ladder diagram must be labelled and described.
A unit for a telecommunications system is to be designed so as to have a minimum availability of 0.9994. The MTTR (mean time to repair) for the unit is estimated to be 24 hours.
The following equation represents the complete combustion of ethane: 2C2H6(g) + 7O2(g) 4CO2(g) + 6H2O(g)At the same temperature and pressure what is the maximum volume in liters of carbon dioxide
A set of digital scales is required to measure a load of 1000 N with an accuracy of ±1 N. Determine the minimum output resolution of the required ADC.
Simple in concept, but complicated in execution because of the resulting integrand: Explicitly evaluate (in Cartesian coordinates) the surface integral (flux) over the surface S defined as the face of the cube that is perpendicular
A delta-wye connected three-phase transformer is rated at 38 MVA with primary and secondary line voltage ratings of 345 and 125 kV, respectively. The transformer p.u. reactance is 10%, the p.u. no-load current is 0.1.
Consider a series RLC circuit disconnected from a source at t=0. The circuit components are R=3 ohms, C = 500 F, and L = 1 H. We assume that Vc(0-) = 20 V and i(0-) = -0A. a) Find the natural reponse i(t) for t > 0.
a. Plot the spectra of X(w) = t sinc(wt/2). Let t = 1 and -20 =
c) Write the SOP boolean equations as obtained directly from the partial truth table above and sketch a logic circuit diagram for them. d) Reduce the above equations step-by-step into the simplest form that would use only NAND gates.
Compute the power absorbed by an element in a circuit, but for a simple sinusoidal current i = sin(2πt/T) where T = 1 s.
Consider an InGaAs APD with excess noise x=0.7, M=10 where M is the multiplication factor. The unmultiplied dark current is 10 nA and bandwidth is 700 MHz. What is the avalanche photodiode noise current per square root of bandwidth
Control Systems- PID Controller, Which one of the following statements regarding the operation of a PID controller is definately false?
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