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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.
Compute the basic checksum, the 1's complement checksum, and the 2's complement checksum for each of the following groups of 8-bit data elements using both the basic calculation of the datasum and the one's complement datasum.
1. Code programs using MATLAB 2. Apply MATLAB and Simulink to aid the analysis of engineering problems An LRC circuit is shown in Fig.1.
A continuous time system, describes by y(t) = 5 Cos (2*pi*20*t+pi/2), is sampled at rate 320 Hz. a) Write the mathematical expression that describes the discrete time (sampled) signal. b) Calculate the value of the discrete signal for n=0 and n=4.
An opamp based integrator is measured at 1KHz to have a voltage gain of -100 V/V. At what frequency is its gain reduced to -1V/V. And, what is the integrator time constant
If one is aware of the channel filter h(t), one may want to redesign either the baseband filter at the transmitter or the baseband filter at the receiver so that there is no intersymbol interference between receiver samples and so that the noise ..
Consider the magnetic circuit shown in Figure. Assume that the reluctance of the iron is small enough so it can be neglected. The lengths of the air gaps are 0.1 cm, and the effective area of each gap is 20 cm2. Determine the total number of turns..
Assume that the neutrals of the generators are now solidly grounded, and that a single-line-to- ground fault occurs at the Mallee bus. What is the per-unit fault current during the subtransient period now? during the transient period?
In anaudio CD, the audio voltage signal is sampled about 44,000 timesper second, and the value of each sample is recorded on the CD surface as a binarynumber. In other words, each recorded binary number represents a single voltage point on theaudio..
A 4-element unform linear array with interelement spacing of λ/2 is operated as a broadside array , find the beamwidth betwen nulls and the side lobe level in dB . in the above problem , it is required to re-design the 4 element array so as to loca..
A M-bit thermometer code for the number k consists of k 1's in the least significant bit positions and M-k 0's in the more significant bit positions. A binary-to-thermometer code converter has N inputs and 2^N-1 outputs.
1. The current in a circuit is 1 amp. What will the current be when the voltage is increased by 50% 2. A 10ohm resistor is connected across a 12 V battery. How much current is there through the resistor
A power supply, when connected to a radio, provides 5V to the radio. When connected to a lamp, it provides 4V to the lamp. Assume the radio can be modeled as 6ohm resistor and the lamp can be modeled as a 0.7ohm resistor.
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