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1. (a). what is the need for power factor correction?
(b). A 3phase synchronous. Motor is connected in parallel with a load of 500 KW, 0.8p.f lagging and its excitation is adjusted until it raises the total P.F to 0.9 lagging. If the mechanical load on the motor including loss takes 125KW, calculate the KVA input to the motor. Draw pharos diagram for condition.
2. i) What are the disadvantages of low power factor? How to avoid it?
ii) What are the measures relates to power quality?
It is required to design an equivalent analog filter using a digital filter and other appropriate components. Thesampling frequency is fsamp= 20 kHz and the attenuation (α)specifications of the filter are as follows: α > 42 dB for 0 4000 Hz.
signal-power absorbtion by a collection of atoms where does the absorbed power go? consider the net steady-state
Consider a uniformly charged sphere of radius R1 with a spherical hole of radius R2 displaced a distance x0 from the center. Let ρ be the charge density. a) What is E on the x axis as a function of x
When disconnected and fully charged, the voltage across the battery terminals is measured to be 13.8 V. When connected to a load that dissipates 18 W of power, the terminal voltage of the battery decreases to 12 V.
Plot the AW versus i graph for each alternative's cash flows, and utilize it to determine the largest MARR that will justify the EMT extra investment of $200,000.
A specific type of MOSFET has VT = -1 V. The MOSFET is in the ON state (a short exists between its drain and source) when vGS ≥ VT. The MOSFET is in the OFF state (an open circuit exists between its drain and source) when vGS
What is maximum load current IL that can be drawn from the Zener regulator in Fig. if it is to maintain a regulated output? What is the minimum value of RI that can be used and still have a regulated output voltage?
How to calculate capacitance from these values, Admittance(s) (2.9981e-6 + 8.3651e-14j), Terminal current(A) (5.9961e-6 + 1.673e-13j), Angular frequency(rad/s) (628.3185) and Electrical potential(v*m^2) (3.48e-12) all in 100Hz frequency
Ms. Ieda Silva plans to retire in 29 years and expects to live for 20 years after retirement. She is preparing a savings plan to meet the following objectives. First, after retirement she would like to be able to withdraw $22,000 per month. The first..
Three parallel three-phase loads are supplied from a 207.85-V rms, 60-Hz three-phase supply. The loads are as follows: Load 1: A 15 hp motor operating at full load, 93.25 percent efficiency, 0.6 lagging power factor.
Design a circuit, and model using HDL that 1) adds two three bit unsigned binary numbers, 2) includes a flag to determine when a overflow occurs, and 3) includes a flag indicating whether the resulting sum is even or odd.
What is the value of Tit if P e1ee = 25 kW, Pmeeh = 15kW, ks = 400 W/m . K, L = 0.5 m, D = 0.05 m, W = 0.7 m, t = 0.05 m, kp = 0.5 W/m · K, Ah = 2 m2, hh = 10 W/m2 · K, h, = 300 W/m2 · K, and Too = 25°C?
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