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A bank of three single-phase transformers, each rated 30 MVA, 38.1/3.81 kV, are connected in Y-Δ with a balanced load of three 1 Ω, wye-connected resistors.
Choosing a base of 90 MVA, 66 kV for the high-voltage side of the three-phase transformer, specify the base for the low-voltage side. Compute the per-unit resistance of the load on the base for the low-voltage side.
Also, determine the load resistance in ohms referred to the high-voltage side and the per-unit value on the chosen base.
3. FIGURE 2(a) shows a 'black box' that is to partially synthesise a 'saw-tooth' waveform of FIGURE 2(b) by using the Fourier series algorithm:
Discuss the primary need or needs that were being addressed in each period. Discuss the evolution and codification of the engineering design process over the course of these four periods. What kind of societal entities became involved in the proces..
Determine the inductance in H/m and the inductive reactance in Ω/km.
Convert these decimal numbers to binary using either of the methods we discussed in class. Show your work. Compute the decimal values of these binary numbers (you don't need to show your work)
What are the mole fractions of the four species in the gas? What is the average molecular weight of thegas?
What happens to the timer? If the timer was an RTO type instead of a TON, what would happen to the accumulated value and What is the main advantage of the Jump instruction?
Given a second class lever with a distance of 5' from the fulcrum to the effort and a distance of 33" from the resistance to the fulcrum, what is the maximum amount of weight that can be lifted with 25 lbs of effort?
Visual examination and metallurgical examination are both important steps in obtaining physical evidence. Explain why visual examination needs to be performed prior to metallurgical examination.
Discuss how the determination of the Thevenin Equivalent circuit simplifies the complex circuits.
From your answers to (a) and (b) above, what do you think would be the basic principles in the metallurgical design of alloys with creep strengths higher than the basic ASS?
Question 1: If the inputs of a JK flip-flop are J=1 and K=1, what will the flip-flop do on the next clock pulse? Question 2: If the inputs of a JK flip-flop are J=0 and K=0 while the outputs are and , what will the outputs be after the next clock ..
Design, simulate, and test an Audio Amplifier which delivers one of the above power outputs to an 8? speaker load. The output power of your design and the input signal of your design must be selected from the above list.
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