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The meter constant of a single-phase 240 V induction watt-hour meter is 400 revolutions per Kwh. the speed of the meter disc for a current of 10 amperes at 0.8 p.f. lagging will be
Write a program to find the sum of the elements of an array called list1. The size of list1 is four bytes. The values of list1 are $FF, $1, $FE, and $02. To check your work, the sum should become $0200. The requirements for writing this program ar..
Use the Z-transform of u[n] and properties of the Z-transform to find X(z). Verify that the expressions obtained above for X(z) are identical. Find the poles and the zeros of X(z) and plot them in the z-plan. Use MATLAB to plot the poles and zero..
A single phase transformer has the following rating: 120 kVA, 2000 V/100 V, 60 Hz with 1000 primary turns. Determine: (a) the secondary turns (b) the rated primary and secondary currents (c) the maximum flux
A) Design a low-pass filter with a cutoff frequency of 12 kHz. Use 0.15 uF capacitor and an appropriate resistor. B) Sketch and label the circuit. C) What is the gain of the filter at a frequency of 20 kHz Give your answer both as ratio (Vout/Vin) an..
where R is the resistance at temperature T(measured in C), R0 is the resistance at T = 0 C and α is a temperature coefficient. For copper, α = 4 * 10-3 C-1 . At what temperature is the resistance greater than R0 by 1 percent
Design a CE amplifier with gain of 10 using a 2N3906 transistor and a 20V power supply. Calculate the required resistor and capacitorvalues for the circuit, assuming a minimum frequency of 10 Hz.
What is the transformer used for in a full wave rectifier Can you make a bridge rectifier without a transformer What are the advantages of using a transformer If you initially have a transformer with a 1:1 ratio
A particle travels along the x-axis with postion ( measured in meters ) as a function of time ( measured in seconds ): x(t) = 5t^2-7t+2. (a) At what time or times is the particle at rest
A 10-V battery supplies a constant current of 0.5amp to a resistance for 30 min (a) Determine the resistance, in ohms,
Electrons are in random motion in a fixed region in space .During 1 sec interval, the probability of finding an electron in a subregion of volume 10^(-15) m3 is 0.23. What volume charge density , appropriate for such time durations, should be assig..
The capacitor has to have the following specifications: Needs to provide 100 horsepower for 10 hours Max operation voltage of 480V The min and max for the dielectric and metals are: 10 nm
A dc machine is rated 5 hp with V_f = 240 V, V_a = 240 V, r_a = 0.63 ohms, and L_AF = 1.8 H. At rated condtions w_r = 127.7 rads/s and the total resistance of the field circuit is 240 ohms. a) Calculate the rated armature current.
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