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1. A 100-kΩ resistor dissipates 50 mW. Find the current through the resistor.
2. The conductance of a particular semiconductor resistor is 0.05 mS. Find the current through the resistor when connected across a 1:5-V source. 2-7 In Figure P2-7 the resistor dissipates 25 mW. Find Rx.
What would be the band gap voltage needed for a material to fabricate an LED that can emit blue light - Design a system for measurements of snoring sounds in heavy snorers using a piezoelectric crystal.
A permanent magnet commutator motor produces a torque of8 N. m with armature current = 10A. armature R=.16 ohms. if motordrives a load requiring torque of 20 N. m at speed = 1800rpm
If Nand gates are used throughoutand a ripple-carry design is used, calculate the delay through the adder, assuming all inputs are presented at the same instant, and counting D seconds per gate. Which output signal suers the worst delay.
Three light bulbs are connected in series to a 100-V battery in a circuit. Each light bulb dissipates 30W, 40W, and 50W, Respectively. Find the current (I) through the light bulbs.
If the pulse length is 3 ms (= T/2 in Fig. 5.11) and the bandwidth of the audio amplifier is specified by the half-power frequencies of 15 Hz and 20 kHz, estimate the tilt and the rise time of the amplifier output.
For a 12-bit linear PCM code with a resolution of 0.02 V, determine the voltage range that would be converted to the following PCM codes. (a) 1 0 0 0 0 0 0 0 0 0 0 1 (b) 0 0 0 0 0 0 0 0 0 0 0 0
How would a radio work if, say, broadcast stations used Frequency Hopping Spread Spectrum or Direct Sequence Spread Spectrum? Explain your answer.
Find the mAh rating of the 1.0-V Eveready® BH 500 battery if the current drain is 550 mA using given Fig. - How long will it supply this current?
For the following voltage and current phasors, calculate the complex power, apparent power, real power, and reactive power. Specify whether the pf is leading or lagging.
A 480 V permanent magnet ac motor is consuming 10 kW at power factor 0.80 lagging. Its speed is 1800 rpm. The winding resistance is 0.5 ohms per phase. Core losses are 100 W. Mechanical losses are 250 W. Stray losses are 1.5% of the input power
Calculate the IL, IR, in polar notation, for the following circuit.
A discrete-time signal x[n] is periodic with period 8. One period of its DFT harmonic function is {X[0],...,X[7]}={3,4+ j5,- 4 - j3,1+ j5,- 4,1- j5,- 4 + j3,4 - j5}. (a) What is the average value of x[n] (b) What is the signal power of x[n]
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