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An aluminum casting that has a mass of 10 kg sits on a steel surface. How much force will be necessary to get it to start sliding. The static coefficient of friction (mu) for aluminum on steel is 0.
The steering wheel has backlash. This means there is a delay between the time the wheel is turned, and the time the car responds. The driver tends to overturn, which leads to instability and lack of
single phase motor draws 20A from a 200V, 50Hz supply with a lagging power factor of 0.8. Calculate the value of the capacitance needed to bring the current in phase with the voltage.
a) Compute and plot the magnitude of the DFT for f(t) using "fftshift", assuming a sampling rate of 8000 Hz and a duration of 0.5 second. b) Window the samples of f(t) using a hann window
A pn junction may be formed by depositing a single crystal film of uniformly doped p-silicon onto a substrate that has been doped n-type. The substrate is 500um thick, and the film is 20um thick. Th
Discuss different applications that could use non-inverting and inverting amplifier circuits. Will the actual op Amp characteristics cause any challenges it used for each application.
Find the transfer function of a second-order system that yields a 10% overshoot and a settling time (Ts) of 1.5s, plus tell the nature of the system
A shunt dc motor has RA = 0.1-ohm and VT = 440 V. For an output power of 16.1 hp, nm = 1,213 rpm and IA = 103 A. The field current remains constant. Find the the rotational power loss in hp.
A new type of Schottky diode is optimized for low-voltage applications. It has typical forward voltage drop of 0.2 V, but its leakage current can be as high as 80 mA. It is being considered for a 12
A small object with mass 3.20 kg moves counterclockwise with constant speed 5.50 m/s in a circle of radius 4.20 m centered at the origin. It starts at the point with position vector (4.20i hat + 0 j
Assume that your application has 600 data reads for each 4000 instructions. For the same number of instruction the application has 400 data writes. The cache used has an instruction miss rate of 0.6
An amplifier with an input impedance of 50 K-ohm, an open circuit voltage gain of 150 V/V, and an output impedance of 100 ? is connected between a 5 K-ohm signal source and a 1 K-ohm load.
Design a sequential Mealy circuit with two inputs A and B, and output X using JK flip-flops. The circuit produces an output X = 1 when it detects the sequence of either A = 00 or B = 11, otherwise X
A single phase 220V system draws a current of 15A at a lagging power factor of 0.8. Calculate the value of a capacitor that can be used to improve the power factor of this system to 0.95 lagging.
A VSWR is measured along a transmission line to be 2. Find two values for the reflection coefficient ? Which of these values will correspond to ZL< Zc, and which to ZL > Zc
A squirrel-cage motor winding is wound up for two poles. At full-load, the motor operates at 3294 rpm with a slip speed of 306 rpm. What is the supple frequency
For a BJT common Emitter Amplifier, the AC base voltage = 1,2Vrms, Av=50, Bdc=150, Bac=200, alpha dc =0.98 and an RE of 500 ohm. What is the AC P-P voltage
A separately excited 300V DC motor has an armature resistance of 1ohm and a field resistance of 100 ohm. The field Voltage is 200V. The no load speed is 1200 rpm and no load armature current 2A
Ib is 15uA in a circuit where an NPN transistor has an Av of 75 and VCE is 10 when Vcc is 25 and Beda DC is 75 and the Ic is 1.125mA, What would Rc be, assuming Ve=0
A linear digital filter Hd(z) is given below, and the sampling rate is T=0.1 seconds. Hd(z)=(z-j)(z+j)/(z-0.5)(z+0.5) 1. Show poles and zeros of Hd(z)in the complex z plane. Is this filterstable
Suppose the voltage across a telephone line at the subscriber drops from 48V to 10V when the phone goes off hook. If the telephone instrument has a resistance of 200 ohms when off
A 52-kg pole vaulter running at 12 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. Neglect air resistance, as well as any energy absorbed by the pole, and determine her alti