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3 ideal transformer having turns ratio 20 : 30, 30 : 40, 20 : 10 are connected back to back. The transmission parameter matrix of the overall system is
Suppose that the cost of electrical energy is $0.12 per kilowatt hour and that your electric bill for 30 days is $60 (power usage only, not including other charges or taxes) Assume that the power delivered is constant over the entire 30 days.
What is the objection to using PZT compositions of the type developed for piezoelectric applications in a pyroelectric infrared detector? What are the properties needed and how have they been achieved?
A low-pass filter is shown in Figure 2. R = 1k , C = 1μF Construct a signal flow graph connecting input V1(s) and output V2(s) and showing internal signals I1(s)
Concern analog signals in electrical engineering, which are continuous functions f(t), where t is time. To digitize the signal, we sample f(t) every ?t to form.
A load operating at 6400 Vrms draws 56 A at a PF of0.812 lagging. Find: (a) the peak current in amperes (b) the instantaneous power at t=2.5 ms assuming an operating frequency of 60 Hz
A black box contains an impedance coil across the two available terminals of the box. The box 20 ampere from a 12-V battery and when it is connected to a 220-v 60 cycle source, it takes 900W.
This will require two transformations from rectangular coordinates, one in the spatial domain and one in the frequency domain. There are two key transformations. Explain. Hint: This problem involves Bessel functions of the first kindof orders zero ..
An ammonia-water absorption refrigeration unit operates its absorber at 0°C and its generator at 46°C. The vapor mixture in the generator and absorber is to have an ammonia mole fraction of 96 percent
A voltage source V(t)=100cos(6Π109t - 45(degrees))(V) is connected to a series RLC circuit. If R = 10MΩ, C = 100pF, and L = 1H, use phasor notation to find the following: a.) i(t) b.) Vc(t) (voltage across capacitor)
Assume a computer has a 16Kx18 memory, and each instruction can only occupy one memory location. How many bits should its PC have. How many different instructions could this computer have at most
Using the time independent one dimensional Schrodinger equation, find the expression of the allowed energy levels for an electron in infinite potential well of width Δz= L (i.e. solve the differential equation and apply B.C. to obtain En)
For use in a liquid crystal display, you want an electrode that is transparent to all visible light. You decide to use a doped semiconducting oxide with a mobility of 10^(-2) m^2/V-s. What is the maximum conductivity you can expect from your oxid..
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