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[DOC File]DESIGN AND CALCULATION OF EARTH ELECTRODE
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The earth fault value will depend on the impedance of the path taken by the fault current, which is known as the earth fault loop. The resistance of the earth electrode plays an important role in the final impedance of the earth fault loop, especially when the neutral of the transformer is earthed without any impedance.
calculating impedance in parallel circuits

[DOC File]TRAPS - G4HFQ
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The trap at resonance will have a Q approaching 200 and an impedance of at least 150K(. Losses at resonance are negligible, bearing in mind that the end impedance of a dipole is in the region of 3000( and we will be using an insulator (the trap) with an impedance of some 150,000(. ... Parallel Outer connection, (photo3) inductance 3.630(H ...
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[DOC File]Unit 3A – Resistors in Series and in Parallel; Voltage ...
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Impedances combine in series and in parallel just like resistors. Practice combining impedances to simplify a circuit by solving Assessment Problems 9.7 and 9.8. Read Section 9.7. Find the Thevenin equivalent of the circuit to the left of the (10 – j19)( impedance in Fig. 9.27. Use the Thevenin equivalent to find the voltage phasor . V. o.
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[DOC File]Transformer Coupling Equations - Messy
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Impedance & Loss. where, and, Phase angle. Loss factor. also, Series to parallel. Parallel to series. Note that if D is less than 0.01, the difference between series and parallel values will be negligible. If N identical capacitors are paralleled, the capacitance will be 10N and D will be unchanged.
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[DOC File]CHAPTER 1
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The absolute-value impedance Z of a parallel RLC circuit, where R is the resistance and X is the net reactance, is found according to the formula: A. Z = R + X. B. Z2= R2 + X2.
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[DOC File]Calculation of the Input resistance of a Triode with a ...
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Aug 05, 2010 · To understand better the relationship between the plate load impedance and the negative input resistance achieved at the grid a simple formula is derived, which can easily be implemented on a graphics calculator like e.g. the Hp 48, the TI-8x series or on a PC running MathCAD or similar program.
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[DOC File]Parallel Flows Calculation Procedure – Reference Manual
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The Interchange Distribution Calculator Working Group (IDCWG) has determined that the IDC tool could not be upgraded by the summer 2000 to automatically calculate the parallel flow contributions from NI/NL service. ... Transmission outages are applied by increasing the impedance to “9999” for out-of-service branches. The impedance ...
parallel impedance calc

[DOC File]WELopez.com
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A series impedance calculation is derived from current and reactance, while parallel impedance is calculated with resistive and reactive voltage divided into the source current 42. Each type of coaxial cable is designed with_____, which is dependent on materials and dimensions used. A. characteristic impedance. B. standing waves. C.
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NORTHERN MAINE TECHNICAL COLLEGE
Understand and apply fundamental trigonometry skills in the solution of series, parallel, and complex circuits. Calculate impedance, phase angle, power factor, real power, imaginary power, and apparent power in RLC circuits. Calculate voltage, current, and power in transformer systems.
calculating impedance in parallel circuits

[DOC File]Planar RF Transmission lines
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and a 3-strips structure (the pitch p is therefore 3.2mm), we get Z0=107.9 for the impedance from the central strip to the adjacent lines. For a structure such as in Fig 3, the characteristic impedance can be approximated as the impedance of a microstrip line in parallel with a coplanar line (superposition) as 89.5 // 107.9 = 48.9
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Parallel impedance calculator