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The no-load input power to a 50-kVA, 23001230-V, single-phase transformer is 200 VA at 0.15 PF at rated voltage. The voltage drops due to resistance and leakage reactance are 0.012 and 0.018 times rated voltage when the transformer is operated at rated load. Calculate the input power and power factor when the load is 30 kW at 0.8 PF lagging at rated voltage. Verify your solution using MATLABTM.
Suppose station A and B are interconnected through two parallel unreliable links, where each link has a failure probability of 0.1. Calculate the average seconds per day when A and B lose communication.
a certain ideal voltage generator is characterized as v(t) = 40 sin 377 t . If this generator is measured with a DC voltmeter, the instrument reads 12 volts, what is the rms value of this voltage waveform
what is the cutoff frequency of an RC low-pass filter that comprises a 10uF capacitor and a 3.3K resistor?- what is the magnetomotive force of a coil containing 3450turns and 2.5amps passing through it ?
Consider a signal x(t) = 10 cos(2pi*fct + 4 cos 2pi*fmt). Assume frequency modulation. The message frequency fm = 2:3 kHz. Calculate the modulation index and find the bandwidth when.
Find the inverse system transfer function to correct the delay distortion and show that the inverse system can be realized by a feedback system. The inverse system should be causal to be realizable.
Write a C program for a HCS12 microcontroller that writes the value, 0x78, to Memory Location VAR1 and then calls a delay function. The delay function should generate a delay of 0.25 milliseconds.
Discuss the types of inference that can and cannot be drawn from this study.
Consider the two-pole two-phase induction motor having two windings displaced 90° in space shown in Figure.The fields produced by the windings are given by Ba = Kia(t) cos(θ ) and Bb = Kib(t) cos( θ-90°). The two-phase source produces currents giv..
An emitter-follower circuit is built using an npn transistor with ß=100 and with RE =1k-ohm. What is the input impedance of the open circuit. If a load of 100-ohm is connected to the output of the circuit, what is the input impedance
a particular electric utility charges customers different rates depending on their daily rate of energy consuption 0.05khw up to 20 kwh and 0.1 kwh for all energy usage above 20 kwh in any 24 hour period.
What is the feedback factor. If a manufacturing error results in a reduction of A to 103, what close-loop gain results? What is the percentage change of Af corresponding to this factor of 100 reduction of A.
How to Find the Size of Earth Conductor, Earthing Lead & Earth Electrodes? (with examples and explanation of each section )
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