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A 1 MVA three-phase 6,600/400V delta/star connected transformer has the following parameters per phase.
HV side: R1 = 1.307 ohms X1 = 5.228 ohms
LV side: R2 = 0.0016 ohms X2 = 0.0064 ohms
(a) Calculate the per unit impedance of the transformer using base values of 1 MVA and 400 V. (and .)
A penstock is used to bring water from behind a dam into a turbine. the penstock is 6m in diameter and moves water at a rate of 500 m^3/s. Compute the mechanical power entering the turbine.
A certain power amplifier with crossover distortion has the input/output voltage relationship vo (t) = vi (t)3 (2.39) a) Use example voltage values to show that this does not satisfy the relationship. b) Let vi (t) = sin (pi t) .
build a solar power system that is used for aresidential application and demonstrate in front of my class. Here are the components used in this system: Solar panel,solar charge controller, 12 V lead acid battery, DC to AC inverter,and a battery te..
an electron in the hydrogen atom can be thought of as circling theproton nucleus in a circular orbit of radius 0.35 x10-10 m. The electron completes one trip around the orbiteach 1.4 x 10-16 sec.
In animation programs, special effects are achieved by changing the properties of objects. What instruction is used to change the opacity and color properties of objects in the Zeus example world?
Three capacitors are connected in series across a 100 V battery. If the capacitances are 1 microfarad, 0.1 microfarad, and 0.01 microfarad, respectively, calculate the potential difference across each capacitor.
What are Power Factor improvement Methods with Their advantages & Disadvantages ?
Analysis of discrete time waveforms in z domain, A discrete time domain signal x(n) - u(n) - u(n-10) is decomposed and plotted. It is then examined in the z domian by appropriate transformation and algebraic manipulation.
Derive a state table for the FSM that produces z=1 when it detects that either the sequence w:0010 or w:1110 has been applied; otherwise, z=0. After the fourth clock pulse, the machine has to be again in the reset state, ready for the next sequenc..
Explain why a voltage follower implemented with an op-amp is a useful circuit component. Explain how the nature of KCL allows the connection to a single op-amp input of multiple voltage signals, each through a resistor, to perform a summing functi..
A three-phase generator is Y-connected. It has phase voltages of 277 V. A delta-connected load is attached to the lines coming from the generator. Each phase of the load has an impedance of 9/41
the saturated liquid and vapor mixture at t=300c and quality of 75%.the mixture occupies a volume of 0.05 m^3 (a) find the specific volume in m^3/kg (hints: vf= 0.0014 vg=0.02167m^3/kg at t =300c) (b) find the mass of the mixture in kg.
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