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In a certain transformer, the input power to the primary is 120 W. If 8.5 W are lost to the winding resistance, what is the output power to the load, neglecting any other issues?
If a lowpass filter with a DC gain of 1 and 3 poles, all at 3KHzis used as an antialiasing filter, at what frequency will the aliased signal ( 5KHz) appear abd wgat will be the amplitude of the aliased signal.
Write a program that asks the user to enter the numbers from 1 to 16 (in any order) and then display the numbers in a 4 by 4 arrangement, followed by the sums of rows, columns and diagonals.
The charge entering the positive terminal of an element is q(t) =-30e-4t mC. If the voltage across the element is120e-2t V, determine the energy delivered to the elementin the time interval 0
With the internal resistance of 0.14Ω, what will be the minimal load resistance to ensure at least 84 percent of the power delivered by the battery goes to the load
a. Sketch the spectrum of the original signal and the sampled signal from 0 kHz and 25 kHz. b. Sketch the recovered analog signal spectrum if an ideal lowpass filter with a cutoff frequency of 4 kHz is used to filter the sampled signal.
A DC power supply is adjusted to give a no load output voltage of 15 volts with the AC line voltage of 115 volts rms. A full load current of 1A is drawn into the circuit and the output voltage drops to 14.89 volts.
Explain the structure and nature of the ionosphere with reference to daily, seasonal and long-term changes and explain the modes of propagation of radio waves of different frequencies
A new 24-bit processor is being designed for operation in a cell phone (you can assume the word-size is 24 bits). Suppose the following memory values are being stored in memory that is organized where each location is 8-bits wide (byte addressable..
a piece of p-type silicon is connected to ground on its right side. on its left side there is a metal electrode which
A radio receiver has antenna noise temperature of 3000 K and equivalent noise temperature of 7000 K for its feeder and amplifier cascade. It requires Eb/No = 15 dB to provide Probability of error of 10^-15 (using BPSK).
The power required for traction at this velocity is 10kW. Assumed 10% drive train losses, and battery discharge efficiency is 80%. A 300V NiMH battery pack will be used for the Energy store with the following characteristics
A 480 V permanent magnet ae motor is consuming 10 kW at power factor 0.80 lagging. Its speed is 1800 rpm. The winding resistance is 0.5 W per phase. Core losses are 100 W. Mechanical losses arc 250 W.
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