Engineering, 13.02.2020 18:40 ashleyacosta
In filter design, it is often possible and convenient to transform a lowpass filter to a highpass filter and vice versa. With H(s) denoting the transfer function of the original filter and G(s) that of the transformed filter, one such commonly used trans-formation consists of replacing s by 1/s; that is, G(s) = H (1/s). For H(s) = .1/(s + 1/2), sketch | H(j omega) |and| g(j omega)|. Determine the linear constant-coefficient differential equation associated with H(s) and with G(s). Now consider a more general case in which H(s) is the transfer function associated with the linear constant-coefficient differential equation in the general form sigma^N _k - 0 a_k d^k y(t)/dt^k = sigma^N _k = 0 b_k d^k x(t)/dt^k. Without any loss of generality, we have assumed that the number of derivatives Nis the same on both sides of the equation, although in any particular case, some of the coefficients may be zero. Determine H(s) and G (s). From your result in part (c), determine, in terms of the coefficients in eq. (P9.63-1), the linear constant coefficient differential equation associated with G(s).
Answers: 2
Engineering, 03.07.2019 15:10
Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.
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Engineering, 04.07.2019 18:10
Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.
Answers: 3
Engineering, 04.07.2019 18:10
Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.
Answers: 3
Engineering, 04.07.2019 18:20
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]
Answers: 1
In filter design, it is often possible and convenient to transform a lowpass filter to a highpass fi...
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