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johnny walker

johnny w.

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The voltage across a certain load is $\mathbf{V}=$ $1200 \sqrt{2} \angle 30^{\circ} \mathrm{V},$ and the load impedance given by $Z=40-\sqrt{30} \Omega$. Is the load inductive or capacitive? Determine the power factor complex power, real power, reactive power and apparent power delivered to the load.

The voltage across a certain load is $\mathbf{V}=$ $1200 \sqrt{2} \angle 30^{\circ} \mathrm{V},$ and the load impedance given by $Z=40-\sqrt{30} \Omega$. Is the load inductive or capacitive? Determine the power factor complex power, real power, reactive power and apparent power delivered to the load.

Electrical Engineering: Principles and Applications

Questions asked

INSTANT ANSWER

A circle of radius b=6cm carrying the I=3mA direct current given in the figure; a) Calculate the magnetic flux density at its center using the magnetic vector potential. b) Calculate the magnetic flux density at its center using the Biot-Savart law.

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INSTANT ANSWER

A conductor of infinite length, straight, solid, radius of b=3mm, circular cross-section and relative magnetic permeability of 3 carries a DC current of 4mA. a) Find the magnetic flux density (B) that will occur in the region with radius r1=2mm inside the principleandb)in the region with radius2=5mm outside the conductor. c) Give the variation of the magnetic field at each location depending on the distance r (r−H graph).

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INSTANT ANSWER

16. The net cash flows of project \( X \) that Keytech J.S plans to realize are shown in the table below. At the end of the economic life of the project, the scrap value is expected to be TL 2,000. Calculate the payback period of the project as the tax rate of the business is \( 20 \% \). \( \begin{array}{lc}\text { Year } & \text { Cash Flow of } X \\ 0 & (6,000) \\ 1 & (1,000) \\ 2 & 1,000 \\ 3 & 3,000 \\ 4 & 4,000\end{array} \) 3 years 2.5 months 3 years 6 months 2 years 2,5 months 3 years 9 months 2 years 3 months

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INSTANT ANSWER

gösteriniz. \( V_{D(S)}=0.7 \mathrm{~V}, V_{D(G e)}=0.3 \mathrm{~V} \) ve \( V_{D([\Delta)}=4 \mathrm{~V} \) Giri?: 10Vp-p kare dalga, Draw the outputs of the circuits to scale with the input sign. Show calculations for output voltage input: 10V p-p square wave \( (\mathrm{Vd}(\mathrm{Si})=0.7 \mathrm{~V}, \mathrm{Vd}(\mathrm{Ge})=0.3 \mathrm{~V}, \mathrm{Vd}(\mathrm{led})= \) \( 4 \mathrm{~V}) \)

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INSTANT ANSWER

In the circuit in the figure, \( 1 \mathrm{zmin}=0.1 \mathrm{~mA} \). D1 Si diode current-voltage characteristic is given in the figure. If \( \mathrm{I}_{2}=10 \mathrm{~mA} \) when Zener is active, calculate the value of the \( \mathbf{R}_{\mathbf{2}} \) resistor connected to the circuit, the maximum \( R_{1} \) resistor value to be connected, the power consumed in the diode and Zener.

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ANSWERED

Penny Riley verified

Numerade educator

n_i = 10^{10} frac{elektron}{cm^3}; mu_n = 1320 frac{cm^2}{V.s}; mu_p = 460 frac{cm^2}{Vs}; q = 1.6x10^{-19} C; V_T = 0.026 V

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INSTANT ANSWER

1 Input voltage of a buck converter is \( 48 \mathrm{~V} \), the switching frequency \( (f) \) is \( 10 \mathrm{kHz} \), the efficiency \( (\eta) \) is \( 100 \% \), and the power \( (P) \) is \( 30 \mathrm{~W} \). Determine value of the inductor \( (L) \) in \( \mu \mathrm{H} \), for the inductor current shown in the figure? \( (\operatorname{Vin}=48 \mathrm{~V}, f=10 \mathrm{kHz}, \eta=100 \%, P=30 \mathrm{~W}, \mathrm{~L}: ? \boldsymbol{\mu H}) \) (Write the answer, just a number not the solution or wordings) [ \( \square_{4} \) (20 Puan) Yan?t?n?z? girin 2 Assume that the circuit in the question 1 operating with the inductor value you have found in "Q1)" as 90 micro henry and If the maximum inductor current is required to be 5.8A, determine the minimum switching frequency in \( \mathrm{kHz} \) ?

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INSTANT ANSWER

A load is connected to the grid via an AC /AC controller in order to control the output rms voltage and power. The grid voltage is 220 Vrms @ 50 Hz. The load is represented as a series connected R and L : R = 10 Ω and L =50 mH. Firing angles of SCRs are 90 and 270 degrees. What is the input power factor? (Vin=220V)

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