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A circular ring of charge of radius a lies in the x-y plane and iscentered at the origin. If the ring is in air and carries a uniformdensity ρl show that the electric potential at(0,0,z) is given by V = ρl a / [2ε0(a2+z2)1/2 ]
Calculate (i) the parallel capacitance C1 that would be required to change the power factor of the total load on the supply to 0.80 lagging and (ii) find the value of the supply current at this power factor
A $5000 face value industrial bond can be purchased for $4920. Its dividend rate is *% and it pays dividends semianually and will mature in eight years. What are the rate of return, the nominal interest rate, and the effective rate of return
Write the difference equation for a four-term moving average filter. The input cos(n/3)u[n] is then passed through the four-term moving average filter. Solve for the first 5 samples of the output.
To maintain a freezer box at -40°C on a summer day when the ambient temperature is 27°C, heat is removed at the rate of 1.25 kW. What is the maximum possible coefficient of performance of the freezer
The teacher decides that he will not lecture unless at least k of the n students enrolled in class, are present. Each student will independently show up with probability pg if the weather is good, and with pb if the weather is bad.
Given a three phase motor: 5 hp, 3515 rpm, 230V, 10A, efficiency = 75%; derive the per-pharse equivalent circuit of the motor.
A charge density is uniformly distibuted over a linear section from 0
(i) Draw a diagram of the loads. Determine: (ii) The apparent power (kVA), active power (kW) and reactive power (kVAr) of each of the three loads. (iii) The total apparent power kVA, total active power (kW) and the total reactive power (kVAr) of the ..
Write a c program that reads in ten integers from the user on a single line, and determines and prints the largest and the smallest integers in the group. If either the largest or smallest integer is a prime number, have your program indicate this..
Assume that the Fermi energy level for a particular material is 6.25eV and that the electrons in this material follow the Fermi-Dirac distribution function. Calculate the temperature at which there is a 1% probability that a state 0.30eV
Traffic lights are being converted from incandescent bulbs to LED arrays to save operating and maintenance costs. Typically each incandescent light uses three 100-W bulbs, one for each color R,Y,G,A competing LED array consists of 61 LEDs.
The forward transmittances of unity feedback tracking systemsare given below. For each, find the type number of the system, thesteady state error coefficients k0,k1, and k2 and the steady stateerrors to unit step ramp, and parabolic inputs.
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