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Is the transformer in question 1 a step-up or step-down transformer?
question 1
An AC power source is connected across 325 turns of an autotransformer and the load is connected across 260 turns. What is the turns-ratio of this transformer?
The transformer in the following circuit (see attached file Figure 4.10) has a turns ratio of 10.
Shown in Figure is the Darlington pair, which is equivalent to a single transistor, as indicated in the figure. Assuming that both Q1 and Q2 are operating in the active region, with |VBE| = 0.6 V, determine the value for VBE for the equivalent tra..
Consider the battery-charging circuit shown in Figure, in which vs(t) = 20 sin(200 πt),R = 80Ω ,VB = 12V, and the diode is ideal. a. Sketch the current i(t) to scale versus time. b. Determine the average charging current for the battery.
Findthe following for an input of 120 VAC(RMS), 60 hertz, given a 17:1 stepdown transformer, and a full-wave bridge rectifier. Rload is 120 ohms. Round off to the nearest tenths place.
Suppose 33 mL of 1.20 MHCl is added to 42 mL of a solution containing excess sodium hydroxide, NaOH, in a coffee-cup calorimeter. The solution temperature, originally 25.0C, rises to 31.8C.
A long copper cylinder 0.6 m in diameter and initially at a uniform temperature of 38°C is placed in a water bath at 93°C. Assuming that the heat transfer coefficient between the copper and the water is 1248 W/(m2 K), calculate the time required t..
Consider the frequency-selective channel with CSI only at the receiver with L i.i.d. Rayleigh faded paths. Compute the capacity of the fast fading channel. Give approximate expressions at the high and low SNR regimes.
If an amplifier has an internal resistance of 500O, what turns ratio must be used to get maximum power transfer to a load of 4O.
a single phase 100 kVA, 1000/100 V transformer gives the following test results: Open Circuit test: 100V, 6.0 A and 400 W Short Circuit test: 50V, 100A and 1800W determine the rated current and voltage for high and low sides
G(s)= K(s-2)(s-4) / s(s+5) Sketch the root locus and find the following: a) Break away and break in points b) The jw-axis crossing points c) The range of gain to keep system stable
The receiver has a noise bandwidth of 1 MHz, an effective input-noise temperature of 800 K, and a gain of 120 dB from its antenna input to its IF output.
Design a series resonant circuit to have a bandwidth of 400 Hz using a coil with a Ql of 20 and a resistance of 2 ohm. Find the values of L and C and the cutoff frequencies.
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