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Under high-signal test conditions, a certain audio amplifier supplies a 24 V rms 1-kHz sinusoidal voltage to an 8- Ω load. The power supply delivers 4 A at a voltage of 50 V to the amplifier. The signal power supplied by the input source is negligible. Determine the efficiency and the power dissipated in them amplifier.
1. If 60C of charge pass through an electric conductor in 30seconds, determine he current in the conducor. 2. Determine the time interval required for a 12A battery charger to deliver 4800C.
Assume a 16-bit fixed point, two's complement representationwith 8-bits of integer and 8-bits of fraction. What is therepresentation of the following values in hexidecimal.
The exciting current for a certain 50 kVA, 480-240V, 60 Hz transformer is 2.5 percent of rated current at a phase angle of 79.8 degrees. Sketch the equivelent circuit and phasor diagram for the no-load conditions and assuming operation is in the s..
A hydroelectric dam has a penstock that discharges 10^5 kg/s of water. The head of the dam is 80m. a. compute the volume of the discharged water per second (flow rate). b. compute the power of the water entering the turbine
Are these signals periodic, find their fundamental period T and their fundamental frequency, otherwise prove that they are non-periodic 1) x(t)= 4 cos(12 t+40) + sin(16 t) 2) x(t)=cos4t +3e-j12t
A capacitance C=35 uF is in parallel with a certain element. Identify the element, given that the voltage and total current are v=150sin3000t(V) and i of tau=16.5sin3000t+72.4 degrees (A)
Using the Karnaugh Map, solve the fallowing expression and answer the question: F= S (4,5,9,13,15) and don't care cells are (0,1,7,11,12). A) Find its minimized Sum of product (SOP) expression. B) Find its minimized product of Sum (POS) expression.
Suppose that you wish to offer a voice over IP wireless service. The target packet error rate (or drop rate) is 10^3 and you determine that if the signal is confined to within a coherence band, about 20% of the packets are dropped due to fading.
An FM receiver is modulated with a signal having a baseband bandwidth of 15 kHz and the maximum frequency deviation is 45 kHz. Assume that preemphasis is added with a 3-dB boost frequency of 5 kHz.
Discuss what is meant by line spectra and what information can be gathered from a line spectrum plot. Discuss the similarities and differences between the Fourier Transform and the Laplace Transform.
Load 1: Wye-connected load that consumes atotal 3-phase power of 3.6 kW at 0.8 power factor lag, when the generator voltage is set so that the voltage at the load is 480volts line-to-line. Load 2: Delta connected load that consumes 2kW+ j1 KVAR of..
The average intensity of sunlight reaching the earth is 1390W/m2. A charge of 2.38 x 10-8 C is placed in the path of this electromagnetic wave. What is the magnitude of the maximum electric force that the charge experiences
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