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The battery is made by connecting 5 unit cells in series and then by connecting 6 of these series cells in parallel. Each unit cell has the voltage of 1.25 V and the internal resistance if 2.2 Ohm. What is the maximum power that can be delivered to the load by this battery?
what size capacitor should be placed in series with the series combination of 800 ohms and 20mH to give an admittance whose magnitude is 1m/ohm at w=10k rads/s
A single-phase 240/120 V transformer has the following parameters: R1 = 1 ohm, R2 = 0.5 ohms, X1 = 6 ohms, X2 = 2 ohms, Ro = 500 ohms & Xo = 1.5k ohms. (a) Load voltage referred to the primary side (b) Currents of the primary and secondary windings
a positive-sequence shunt admittance y= j4.4* 10-6 S/km. for this line if it has 70% shunt reactive (inductors) compensation and 40% series capacitive compensation. Half of this compensation is installed at each end of the line.
A He-Xe mixture containing 0.75 mole fraction of helium is used for cooling of electronics in an avionics application. At a temperature of 300 K and atmospheric pressure, calculate the mass fraction of helium and the mass density.
A processor has a 32 MB cache and a 64 bit data bus. What is the minimum width of the address bus needed to access the entire cache
explain the use of the Op Amp as a difference amplifier and as a comparator. What are the distinctions between the ways each one is used.
A constant current source of 2 mA is placed across a fully discharged capacitor of 100 F. In the time period before the capacitor reaches breakdown voltage, what is the time rate of change of voltage across the capacitor in V/s
an electric motor has an armture constant of 140, a flux of 25 mwh, an armuture current of 30 A , and a rotatio?nal speed of 1600 rpm. what is most nearly the power output in watt
A relay coil is connected to a 210-V, 50-Hz supply. If it has a resistance of 30 ohms and an inductor of 0.5 H: 1. The apparent power to the nearest VA is 2. The power factor to the nearest hundredth is
Given a function G = K/(s + 5)^2 and needing to design a lag network that needs a phase margin of 45 degrees and a steady state error of 5% how do you calculate aplha and tau for the compensator function Gc(s) = (1 + tau*s)/(1 + aplha*tau*s)
A 20-hp, 250 V shunt-DC motor has an armature circuit of 0.22 ohms and a field resistance of 170 ohms . At a low-load, the speed is 1200 rpm and the armature current is 3 A. At full-load, the current is 55 A, and the flux is reduced by 6%
Suppose the RTD of (108.1 Ohms) has a dissipation constant of 25mW/°C and is used in a circuit that puts 8 mA through the sensor. If the RTD (108.1 Ohms) is placed in a bath at 100°C, what resistance will the RTD have
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