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A 3-kVA, 220:110-V, 60-Hz single-phase transformer yields this test data
open-circuit test: 200 V, 1.4 A, 50 W
short-Circuit test: 4.5 V, 13.64 A, 30 W
Determine the efficiency when the transformer delivers a load of 2 kVA at 0.85 power factor lagging.
The current through a branch in a linear network is 2 A when the input source is 10 V. If the voltage is reduced to 1 V and the polarity is reversed, the current through the branch is a. - 2 A b. - 0.2 A c. 0.2 A d. Cannot be determined with the in..
You are to specifically find the normalized voltage magnitude values at the load plane and the voltage maxima and minima points on the line and 9 additional points which are spaced at intervals of 0.05 ohm from the load plane, i.e., at a total of ..
A 150MW alternator generates an open-circut line-t0-line voltage of 12kV at nomial DC excitiation. When the terminals are placed in short-circuit the resulting current per phase is 8000A.
The specific heat capacity of glass is 840 J/(kg · C°). When identical amounts of heat are supplied to each, the glass bar reaches a temperature of 90 °C, while the other bar reaches 290.0 °C. What is the specific heat capacity of the other substa..
Calculate the magnitude and phase angle of the current through the coil, and the magnitude and phase angle of the voltage across the coil. Also, calculate S, P and Q for the circuit
draw out a schematic that implements a 3-bit XOR gate, but consisting of only 2-bit NAND gates. Your schematic should have from 8-10 NAND gates, but NO other logic function such as OR, AND, INV gates can be in your final design.
Consider the circuit as shown below. If Vin peak voltage = 12V, Calculate the output voltage Vo. Open loop voltage gain of the Operational Amplifier A=10,000. The voltage drop across the diode is 0.7 V.
A line charge of uniform charge density (l) forms a circle of radius b that lies in the xy-plane in air with the center at the origin. a) Find the electric field intensity E at the point (0,0,h) b) At what value of h will E in part (a) be a maximum
Power factor correction, Three parallel impedances in rectangular form as follows
A capacitor in an RC circuit with R = 5.00 W and C = 6.00 mF is being charged. What is the time required for the capacitor voltage to reach 86.5 percent of its steady-state value
Technician B says that the resistance of a copper wire decreases as its length increases. Which of the following statements is correct?
Design a vending machine that accepts a nickel, dime, or a quarter (represented by SW1, SWO = 01,10, or 11, respectively). Thus you can only input one coin at a time. It also does not accept more than 35 cents. In real operation, the coin will be ..
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