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If the current through and voltage across an element are I = 8 sin(ωt + 40°) and v = 48 sin(ωt + 40°), respectively, compute the power by I2R, (VmIm/2) cos θ, and VI cos θ, and compare answers.
Two identical automobile headlamps are connected across a 12v battery. if the total current from the battery is measured to be 6.5 A, what is the current through each headlamps
Three identical coils, each having a resistance of 10 ohms and a reactance of 10 ohms are connected in (i) star (ii) delta, across 400v, 3-phase supply.- Find in each case the line current and the readings on each of the wattmeters connected to mea..
what will happen to the negative terminal if ground is applied to the positive terminal of an inverting op-amp?
calculate the impulse of an ideal filter with cut-off frequency of a)2KHz, and b)3KHz for a signal sampled with a rate 8000 samples/sec.
The transformer is to be used on a 50 Hz system, with the restriction that it maintain the same maximum core flux and the same total losses. Determine (a) the new voltage rating; (b)the new kVA rating.
Calculate the electron and hole densities in an n-type silicon wafer (Nd=10^17 cm^-3) illuminated uniformly with 100 mW/cm^2 of red light (Eph = 1.8 eV). The absorption absorption coefficient of red light in silicon is 10^-3 cm^-1.
A 2N3904 has a power dissipation of 625mW without a heat sink. If the ambient temperature is 65 degree C, what happens to the power rating
Suppose 33 mL of 1.20 MHCl is added to 42 mL of a solution containing excess sodium hydroxide, NaOH, in a coffee-cup calorimeter. The solution temperature, originally 25.0C, rises to 31.8C.
Consider the amplifier shown in Figure. With zero dc input voltage from the signal source, it is desired that the dc output voltage be no greater than 100 mV. Ignoring other dc imperfections, what is the maximum offset voltage allowed for the op a..
Two thin rods of length L lie on the x axis. One of them has a charge of -Q uniformly distributed along its length and is positioned between x = -L and x = 0. The other one has a charge of +Q uniformly distributed along its length.
Dynamic microphone changes sound into an electrical signal - Determine the Thevenin Equivalent circuit as seen from terminals A and B in the sketch
A 460-V 200-kVA 0.85-PF-leading 400-Hz four-pole Y-connected synchronous motor has negligible armature resistance and a synchronous reactance of 0.90 per unit.
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