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A 4 ohms resistance is in series with the parallel combination of a 20 ohms resistance and an unknown resistance R sub x. The equivalent resistance for the network is 8 ohms. Determine the value of R sub x.
Transmission line A coaxial transmission line has characteristic impedance Z0 = 50 ohms and has length L = 200 m and phase velocity vp = 2.0e8 m/s. The end at x = 0 is terminated with Rs = 50 ohms and the end at x = L is terminated with RL = 75 oh..
A torque of 18 N-m is applied to a rotating part. The moment of inertia is 0.078 kg-m2. How much time (in seconds) will it take to rotate the part 180°?
Explain the structure and nature of the ionosphere with reference to daily, seasonal and long-term changes and explain the modes of propagation of radio waves of different frequencies
a solid cylindrical conductor of raduis a and charge Q is coaxial with a cylindrical shell of negligible thickness,radius b,and charge -Q. FIND THE CAPACITANCE OF THIS CYLINDRICAL capacitor if its length is l.
A system samples a sinusoid of frequency 480 Hz at a rate of 100 Hz and writes the sampled signal to its output without further modification. Determine the frequency that the sampling system will generate in its output.
The current in the bulb depends on the time t according to the relation I = (0.807 A) sin [(272 rad/s)t]. (a) What is the frequency of the alternating current (b) Determine the resistance of the bulb's filament. (c) What is the average power deliv..
Design a current divider that will provide a 1/3-2/3 current splitting ratio. Use resistance in kilo ohm range. Redesign the current divider so that the resistors are less than 100 ohms but maintain the same 1/3-2/3 splitting ratio.
Using counters and state machines, use one slide switch to either read the switches that would set the duty cycle (count up to value) or cause the PWM to be running. If the slide switch is a ‘0' then the design allows the user to set the PWM valu..
If the magnitude of the resultant force is to be 460N , directed along the positive y axis, determine the magnitude of force F. If the magnitude of the resultant force is to be 460N , directed along the positive y axis, determine the force F direc..
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..
A clever student notices that a high constant loop gain would make the PLL converge in frequency and phase. Rather than use an amplifier with infinite gain the student decides to just use an unstable filter.
Determine the N-point DFT X[n] of the N-point sequence x[n]=sin(ωon), 0≤n≤N-1, for ωo ≠ 2∏r/N, where r is an integer in the range 0
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