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A large room is illuminated by twenty 150-watt lamps and thirty 100-watt lamps. If the circuit voltage is 116, calculate the total current.
What do the letters PCM and PAM stand for? Why is PCM transmission preferred over PAM transmission? Give at least two reasons in your answer.
If we know only the following about a negative feedback system: Gain 12dB, phase 180° at 1rad/sec and gain 0dB, phase 159° at 0.2rad/sec. Determine if system is stable or not.
A radio link has a transmitter with a power of 1 W and an initial noise of 16 mW. The receiver has a sensitivity of 125 mW and can tolerate a SNR of 15 dB. What is the maximum noise power that can be inserted
Two identical CS amplifiers are connected is cascade. First stage is fed with a source Vsig having a resistance Rsig = 100k Ohm. A load resistance Rl = 10k Ohm is connected to the drain of the second stage.
A noninverting amplifier has a closed loop voltage gain of 11. What is the output peak voltage if the input is 2 V peak to peak?
A uniform plane electromagnetic wave propagates in a lossless dielectric medium. The electric field in the wave has the instantaneous expression E(z,t) = iy 3 sin(3pi.109t + 100piz 600), V/m. i) What is the frequency of the wave in Hz
a 10 hp, 230v , 1200 rpm dc series motor draws a current of 36 A when its under rated voltage at its rated speed Ra = 0.2 Rf = 0.1 a) find the speed of this motor when its taking a current of 24 A. b) determine the developed torque if this motor for..
Each pole of a 100kW, 250v flet-compound generator has a shunt field of 2000 turns and a series field of 7 turns. If the total shunt field resistance is 100 ohms, calculate mmf when the machine operates at rated voltage.
Express the sequence x(n)={1 n=0 , 2 n=1 , 3 n=2 , 0 else} 1- Express the signal as a sum of weighted and shifted unit impulse sequence. 2- Express the signal as a sum of weighted and shifted unit step sequence
The 9S12G128 event counter is configured and enable for rising edge. A 0.5 Hz waveform (TTL logic levels) is applied to the counter input. With the counter starting at 0x0010, what is the data contained in the event counter
Design a Phase lag controller that will have a phse margin of about 60 degrees (you will need to be within 5 degrees for your design) A. Where are the poles and zeros B. What is the approximate value of the gain crossover frequency of the plant with..
Given the electric field E=4xux+2yuyV/m find the voltage between the points A(2,0) and B(0,2) integrating along: (a) straight line AB; (b) broken line AOB, where O(0,0).
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