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In a unity feedback system, the forward path has a transfer function of the form G(s) = k/(1+s/ωp), and the feedback path has a gain of kfp which is less than unity. Calculate the bandwidth of the closed-loop transfer function. How does the bandwidth depend on kfp?
Describe the how the Hall Effect it is used to measure whether a semiconductor material is n-type or p-type. Sketch a diagram and show the critical measurements.
A four DC shunt generator has Φ=.06 Wb/pole, Z=175, n=1800 rpm, coverage, PFC= 0.8 A. Calculate the generated voltage B. If the load voltage is 240 V and the full load current is 100A, Calculate the armature resistance.
A silicon abrupt junction, approximated by a step junction, has a doping of NA= 5 x1015/cm3 and ND= 1015/cm3 and a cross-sectional area (A) of 10-4cm2. Assume the depletion approximation, VA=0, and ni=1010/cm3 to: a. Calculate Vbi.
mutual shifted by 90 degree currents through each of both windings of the single phase A motor are (5.5+1.7) A but RMS voltage of the supply is 220 V. How big will be torque on shaft of the motor is efficiency factor (\eta\) is 0.7
a radio antenna operating at 1.5 MHz has an input impedance of 6+j226 ohms. A capacitor is connected in series with it for tunning purposes. compute the valur of capacitance needed to tune the antenna to resonance.
Assume the mass of the cup and water to be equal to the mass of water alone. Calculate the normal force FN for 300 g and 150 g.
Let the input to a singly-balanced mixer, f(t), be given by V0 Sin (2 pi fs t). The local oscillator input p(t) is a square wave, alternating between 0 and +1 volt. The freqency of the square wave is 10 MHz, while for the input, fs is 100 KHz.
Given the function F(a,b,c,d)=a'b+ad'+ab' a) Design a minimum two-level NOR-gate network to realize the above function. b) Design a minimum three-level NOR-gate network to realize the above function.
Will the electric field inside change (how much if yes)? Will the stored energy in the capacitor change (how much if yes)?
What is the channel capacity for a channel with a 300 Hz bandwidth and as S/N = 3? 2nd problem: Given a channel with a 50 kHz bandwidth and a S/N = 127, determine:
Design a circuit to add two 2-bit numbers using a 7483 4-bit adder. Use 2 switches on the designer to input 1 value and 2 other switches to input the other value. 1)The 7483 adds 2 4-bit values. What must be done with the unused inputs
Suppose that without a 1k-ohm load an amplifier's output voltage is 5Vpp but when the 1k-ohm load is attached, it drops to 3Vpp. What is the output impedance of the amplifier
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