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The curved portion of the bar shown has an inner radius of 20 mm. Knowing that the allowable stress in the bar is 150 MPa, determine the largest permissible distance α from the line of action of the 3-kN force to the vertical plane containing the center of curvature of the bar.
A rectangular patch has length 13 cm and width 0.8*13 cm and is supported by a dielectric substrate with relative permittivity 4. What is (approximately) the resonance frequency (in GHz) of the patch antenna
The armature, frame, and core of a 12-V DC control relay are made of sheet steel. The average length of the magnetic circuit is 12 cm when the relay is energized, and the average cross section of the magnetic circuit is 0.60 cm2.
An inverting op amp has Ri = 20 k Ohms, Rf = 500 k Ohms, and Req (resistor between + input terminal and ground) = 19 k Ohms. How much does the offset voltage increase if Req is replaced by a short circuit
Design a simple BJT amplifier circuit for receiving the over-the-air HDTV signals. The circuit should have a voltage gain of 10-100, assuming your signal source (antenna) is connected to amp through a cable with an impedance of 75
A single-loop negative feedback system has the loop transfer equation: L(s)=Gc(s)G(s)=K(s+2)^2 / (s(s^2+1)(s+8)) a. Sketch the root locus for 0 K infinity to indicate the significant features of the locus. b. Determine the range of the gain K for whi..
Using SR Flip-flops and NAND gates, design a system that outputs 1 if it takes an even number of clock cycles to recognize the pattern 11-0-101. Otherwise it outputs 0.
Assume that life on Mars requires cell potential to be +100mV, and the extracellular concentrations of the three major species are following (mmol/L): Na+ : 145; K+ : 4; Cl- : 120. Choose one species and assume that other two permeabilities are ze..
Calculate the carrier concentrations and the type of semiconductor if a pure silicon crystal at 300K is doped with 2.5×10^13 cm-3 boron atoms.
Implement the circuit with a block diagram decoder (you don'tneed to show the internal implementation of the decoder) and OR gates only. Implement the following Boolean function with a multiplexer.
A 230V, 60Hz voltage is applied to the primary of a 5:1 step down, center tapped transformer used in the Full-wave rectifier having a load of 900Ω. If the diode resistance and the secondary coil resistance together has a resistance of 100Ω.
Silicon, originally intrinsic, is doped with 4*10^16 /cm^3 of arsenic atoms at room temperature. a) What proportion of the silicon atoms have been replaced by arsenic atoms b) What is the thermally generated density of electrons and holes
A HCS12 embedded timer is in PWM mode. If the E-clock is 24 MHz, the output period is 35.33 microsec, and a scale factor of 4 is used, what is the value loaded into PWPER
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