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A 3000 pF power capacitor has maximum power and voltage ratings of 200 kV A and 15 kV respectively. Its dissipation factor can be assumed to be constant at 0.001. Under particular ambient conditions, and operating at 5 kV (r.m.s.) and 100 kHz, its temperature is 10 °C above the 30 °C of the surroundings. Assuming the same ambient conditions, estimate the temperature of the unit when it is operating at
(i) 5 kV (r.m.s.) and 300 kHz and
(ii) 10 kV (r.m.s.) and 150 kHz. Calculate the reactive current carried by the capacitor, the e.s.r. and the dissipated power under each of the two operating conditions
A corporation has two construction contracts that are to be assigned to one or more of three firms (say I, II, and III) bidding for these contracts. (One firm could receive both contracts.)
(a) Impulse Response of a DT LTI system is given by h[n]=(.2^n)u[n] Determine the step response of y[n] of the system for all n. (b) Given h[n]=(a^n)u[n] and x[n]=(.2^n-5)u[n-5] Evaluate y[n]=h[n]*x[n] for
Determine the relative permittivity of the dielectric, the maximum and minimum electric field intensities in medium 1 and the electric field intensity in medium 2.
Calculate the most economical conductor size.- Find the most economical size of the conductor. Given that specific resistance of conductor material is 10-6 Ω cm.
What would be the average fixed costs if the cereal maker captured a 2 percent market share? What would be its cost disadvantage if it only achieved a 1 percent share? If, prior to entering the market, the firm contemplates achieving only a 1 perc..
A 3-phase hydroelectric synchronous generator is read to be 110 MW, 0.8 pf lagging, 6-kV, Y- connected, 50 Hz, 100-rpm.
In the United States, coal is a fossil fuel, used mainly to fuel the energy needed for electric power plants to manufacture electricity. The air pollution caused by burning coal has been linked to health problems and concerns for the general popul..
The charge leaving the positive reference terminal of a voltage source is q(t)= [6sin120pi*t - 8cos120pi*t]mC the voltage source value is v(t)= 160cos120pi*t V. A) Determine the power supplied by the voltage source at t=0
H(s) = ( 100 (s + 20) (s + 50) ) divided by ( ( s +8 ) ( s + 300 ) ( s + 5000 ) ) Determine the Bode magnitude and phase responses forH(s). Label all slopes and dB values.
Compute the SNR at the receiver in decibels. d. Find the average probability of error for the following digital signaling methods
A combinational logic circuit has 3 outputs as described below: F1=Minterm(0,3,4) F2= minterm(1,2,7) F3= Maxterm=(0,1,2,4) Implement the circuit using a single decorder with active high outputs and external 2 input OR gates
Design the circuit using only another type of flip-flop and NAND gates logic. Re-design the circuit with an UP/DOWN counter input, so that the sequence can be reversed. The counter has a single input D, when D is low the counter counts up the seque..
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