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A speech signal with a bandwidth of 4 kHz is sampled, quantized, and transmitted using a PCM system. It is desired that the data sample at the receiving end must be known within ±5% of the peak-to-peak full-sacle value of the amplitude ±A. Determine the number of samples must each digital word contain. Estimate the bandwidth of the PCM signal assuming the pulse is
by assuming k = 1 and 2 in (10.17.11b).
The plates of a parallel-plate capacitor have areas of 40cm2 and are separated by 0.2mm of waxed paper (K=2.2). Find its capacitance.
It was noticed (in the field) that when the load was turned off (0 real power consumption) that the generator began to operate leading, yet the engineer was not able to replicate this behavior using the model described above. Explain what is defic..
The 741 op amp is usually modeled on specification sheets as a voltage amplifier having the following parameters: Rin = 1 M, Av = 100,000, and Rout = 100 Using this information, develop equivalent circuits for the 741 as a current amplifier
The following, are directed towards the schematic diagram of the Digital/ Analog Trainer System found on the Instructor Resources section of Connect for Electronic Principles. A full Instruction Manual for the Model XK-700 trainer can be found at ..
Explain the meaning and significance of the critical field resistance of a shunt generator.
In transformer designs, often you can find an air gap in the core. In all the electric machines, there is an air gap between the stator and rotor. In both cases, flux will go through both core material and the air gap.
Suppose that the sidetone level of a telephone is increased. What is the natural reaction of the subscriber?
An automobile manufacturer is concerned about a fault in thebraking mechanism of a particular model. The fault can, onrare occasions, cause a catastrophe at high speed. The distrubution of the number of cars per year that will experience
Calculate the current, power factor and torque developed, when the excitation emf lags the busbar voltage by 15°, 25°, and 35° (elect).
Adding dopants to a sample of silicon is found to reduce the Hall coefficient by a factor of 10 and increase the conductivity by a factor of 5. What effect has this dopant addition had on the mean free path
A point source light of 9000 cd is mounted 3.3m above the centre of a work bench.The bench measures 4m x 4m, what is the illumination on the corners of the bench ?
A binary symmetric channel with error probability p1 is followed by an erasure channel with erasure probability p2. Describe the channel matrix that results from this cascade combination of channels. Comment on the results.
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