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which semiconductor device and circuit technologies made the wide spread of mobile communications possible? How modern electronics technology affects positively and negatively your personal life, the work environment and the global society?
A 240kW 500 Volt 1750rpm separately excited dc generator has an overall efficiency of 94%. The shunt field resistance is 60ohms, and the rated current is 5amps. The I^2R loss in the armature is 0.023pu.
Given a sawtooth signal with fundamental frequency = 20 KHz as the input signal going into an ideal Highpass Filter with cutoff frequency fc = 60 KHz, what frequency components will be obtained at the output
An AB latch operates as follows: If A = 0 and B = 0, the latch state is Q = 0; if either A = 1 or B = 1 (but not both), the latch output does not change; and when both A = 1 and B = 1, the latch state is Q = 1.
Draw a relay construction diagram and briefly explain the operation of a relay.
A voltage divder is required to produce a 5.5V output from 12V source. If one of the resistor values is 1.0k, what value is required for the second resistor so that the voltage across the 1.0k resistor is 5.5V
Design a 300W PFC BL-Zeta converter operating in DCM (Output Inductor) to maintain a DC link voltage of 100V with percentage ripple of 4%. The permitted ripple in the input side inductor and intermediate capacitor is given as 20%.
1.2MW wind turbine has rotor diameter 64 m. Turbine operates in area with average wind veocity=7.5m/s with air density = 1.18kg / m^3. Turbine power coeff. including unit efficiency = 42.8 % Determine power output and the annual energy produced
A sinusoidal signal described by Cos (2pit+pi/4) passes through a linear time invariant (LTI) system that applies a gain of 2 and a time delay of 0.125 seconds to the signal. Write the mathematical expression that decribes the signal that will com..
What is the maximum message bandwith for which the system operates satisfactorily? Determine the output signal to quantizing noise ratio when a full-load sinusoidal modulating wave of frequency 1 MHz is applied to the input.
A cylindrical conductor of inner radius a and outer radius b carries a steady current, I. The current density in the conductor is uniform. Find -B (magnetic flux density) as a function of (rho) , the distance from the axis of symmetry of the conduc..
Consider a Schottky diode at T=300 K that is formed with Pt qφM=5.3ev 'work function' on n-type silicon.knowing that qX for silicon =4.05ev (a) find the barrier height. (b) Calculate the saturation current.
using CodeWarrior write a program to clear Register A, add five to Register A 10 times, and place the result in RAM Location $2000. Use a RAM location for holding the counter
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