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A small businessman planes to start a taxi -service and purchased a new car for #36000 with borrowed money at 15% compounded annually , his net income is $12000 per year and the salvage value of the car at the end of 4 years is $5000.The owner spent $2000 for major transmission work in year 2.1. Using present worth analysis, is this a visable business?2. What is the approximate rate of return?
A pulse width modulation (PWM) circuit works by varying the duty cycle of the square wave while keeping the period fixed.
Assume you buy a 1 kOhm resistor with +/- 20% tolerance in its value. You would like this resistor to consume at most 2 W of power, otherwise it might burn. What is the highest power supply in V you would use to power it
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
Two transistors, fabricated with the same technology but having different junction areas, when operated at a base emitter voltage of 0.75V, have collector currents of 0.2mA and 5mA. A. Find Is for each device.
Develop a voltage-to-current converter that satisfies the requirement I = 0.0021Vin. If the op amp saturation voltage is ±12 V and the maximum current delivery is 5 mA, find the maximum load resistance.
A cable TV receiver has an input impedance of 200 ohm The cable TV distribution system uses RG-6 cable. This cable has a characteristic impedance of 75 ohm Design an impedance matching stage to maximize the power transfer
Consider a hollow spherical conductor with total charge +5e. The outer and inner radii are a and b, respectively. (a) Calculate the charge on the sphere's inner and outer surfaces if a charge of -3e is placed at the center of the sphere.
n the conduction band of a semiconductor, it has a lower valley at the center of the Bril- louin zone, and six upper valleys at the zone boundary along [100]. If the effective mass for the lower valley is 0.1m0 and that for the upper valleys
A 60-Hz, single-phase transmission line has a length of 80 miles. Its shunt conductance (G) is 3.4×10?11 S/mile, resistance (R) is 0.1 ?/mile, capacitance (C) is 16 pF/mile, and inductance (L) is 0.56 mH/mile.
define a one-dimensional potential well having energies U as a function of position x as follows: U=infinity for x= -1nm to x=0; U=0 eV for x=0 to x=5nm; U=10 eV for x=5nm to x=7nm; U=0 for x>7nm and x
For the system specified by the following difference equation, compute the first five samples of the response to the input given as x(n)=e^-0.4n u(n-1). The system is initially at rest. y(n)=y(n-1)-2y(n-2)+x(n)-0.8x(n-1)
Design a Miller integrator with a time constant of 0.1 s and an input resistance of 100 k ohm. A dc voltage of -1 volt is applied at the input at time 0, at which moment vO = -10 V. How long does it take the output to reach 0 V to +10 V
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