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Chapter 15 Solutions
EBK FUNDAMENTALS OF ELECTRIC CIRCUITS
- Three speech signals are TDM multiplexed with a high-quanty music signal. It each speech signal is sampled at 16 kHz and PCM quantized by 8 bits/sample, while the music signal is sampled at 64 kHz with the same PCM quantizer. 1. Draw the block diagram of this TDM. 2. Calculate the output bit rate of this TDM.arrow_forward3- For the network below determine the value of R for maximum power to R (use Thevenin equivalent) and determine the value of maximum power R₁ 1.2Ω E + 12 V I D 10 A R₂60 6Ω Rarrow_forwardPlease solve this problem in detail to understandarrow_forward
- Q3: (40 Marks) Single phase full bridge voltage source inverter has an RLC load with R-1002, L-31.5mH and C=112µF. The inverter frequency is 60Hz and de input voltage is 220V. (a) Express the instantaneous load current in Fourier series to third harmonic. (b) Calculate the RMS load current at the fundamental frequency (n=1). (c) Calculate the load power due to fundamental component (n=1).arrow_forward12.3 Express each of the waveforms in Fig. P12.3 (on page 667) in terms of step functions and then determine its Laplace transform. [Recall that the ramp function is related to the step function by r(t − T) = (t − T) u(t − T).] Assume that all waveforms are zero for t<0. - - -arrow_forwardEvaluate each of the following integraarrow_forward
- With the aid of suitable diagrams, describe the benefits that antenna arrays have over singleelement antennas, with their applicationsarrow_forwardExplain what is meant by an electric dipole antenna, sketch its radiation pattern, state itsdirectivity and describe its main applicationsarrow_forwardEstimate the length required for a half-waveelectric dipole antenna for transmitting/receiving EM waves at 800 MHz (this is in the UHFbandwidth of 470 to 860 MHz, used for UK TV transmissions).arrow_forward
- If the voltage waveform in Fig. 6.68 is applied to a 50-mH inductor, find the inductor current i(1). Assume i(0) = 0.arrow_forwardQ3/A 8-pole, 3-phase, 50 Hz induction motor, running at 725 r.p.m, rotor is star connected its resistance and reactance 0.25 and 1.5 ohm per phase, the emf between slip rings is 100, find the rotor current per phase, power factor, synchronous speed, slip and rotor frequencyarrow_forward440 v, 4-pole, 3-phase, 50 Hz, star stator connected induction motor, full load speed 1425 r.p.m, rotor impedance 0.5+4.55ohm and rotor/stator ratio 0.8 calculate 1) starting torque, (2) rotor current (3) the value of external resistance to add to give maximum starting torque (4) power factor at maximum torque.arrow_forward
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