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A circuit consists of a battery connected to three resistors (60ohm , 30ohm , and 180ohm ) in parallel. The total current through the resistors is 1.9A . Find the emf of the battery.
Assume that the load is star connected with the neutral disconnected. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Plot the neutral voltage Plot the phase to neutral voltage for pha
A sample of non-ideal gas is made to undergo an expansion process during which its pressure and volume are related as shown in the table below. The energy of the gas at the start and finish of the p
A substance expands from V1 = 1 ft3 to V2 = 6 ft3 in a constant-pressure process at 100 lbf/in2. The initial and final internal energies are U1 = 40 Btu and U2 = 20 Btu, respectively.
A certain signal is modeled by a continuous Gaussian random process X(t) with mean E {X(i)} = 2 and autocorrelation function R(t, r) = 4 + e-0.5|r|. Compute the covariance function C(t, r). Compute
Consider a VBE multiplier with R1=R2= 1.2k ohms utilizing a transistor that has VBE= 0.6V at Ic = 1ma, and a very high beta. (b) Find the value of the current I that will result in the terminal volt
The power factor of a load connected to a 120-V 60-Hz source is raised from 0.866 lagging to 0.966 leading by connecting a 110.5-F capacitor in parallel with the load. Determine the load current I1
Find the equivalent impedance for Z1 = 60 L+60 and Z2 = 80 L-45 when these are connected in parallel What are the branch currents and the total circuit current if the supply voltage to the circ
A series RLC circuit connected to a 100-V 60-Hz source draws a current of 2.5 A. The measured power factor for the circuit is 0.7 leading, and the inductive reactive power is 300VAr. Calculate the
The input/output relation of a discrete time system is given by y(n) = x(n+1) + x(n-3). Find an expression for h(n), the unit sample response of this system. specify how many non-zero terms t
An additional variable power factor load is to be added to the factory. The new load will add 320kW to the factory. The power factor of the variable factor load is to be adjusted so that the overall
The power factor of a load connected to a 120-V 60-Hz source is raised from 0.866 lagging to 0.966 leading by connecting a 110.5-?F capacitor in parallel with the load. Determine the load current I1
The junction capacitance of a silicon pn junction is 1.83 pF at T = 300 K when the anode and cathode are held at the same voltage. The concentration of donor atoms in the n-region of the junction is
Determine the conductivity of silicon at T = 300 K if it is doped with donor impurity atoms at a concentration of 1.25*1016 cm-3. Assume that the electron and hole mobilities are 1350 cm2 / V-s and
The built-in voltage of a GaAs pn junction diode is 1.25 V when the diode's temperature is T = 320 K. The cathode region of the diode is doped with phosphorus at a concentration of 1017 cm-3. Determ
After t = 0, the current entering the positive terminal of a flashlight bulb is given by: i(t) = 2(1 - e^ -10t) A and voltage given by: v(t) = 12e^-10t V Determine the maximum power delivered to the
Given a course voltage of 10V, a source resistance of 10 ohms, a 10mH inductor, and a 5nF capacitor, choose a load resistance and draw a circuit that will have an underdamped (decaying sine wave) se
A system has the following input/output relation: y(n) = x(n) + .5 y(n -1). If the input x(n) is the sinusoidal signal shown in problem 1.32(d) (Above), the steady-state output will have the followi
Assuming dopant atoms are uniformly distributed in a silicon crystal, how far apart are these atoms when the doping concentration is a) 10l5 cm-3, b) 1018 cm-3, c) 5times1020 cm-3. Estimate the resi
A circuits is needed to realize the transfer function \(T_{v}(s)=\pm \frac{(s+125)(s+500)}{(s+250)(s+1000)}\) (a) Design a circuit using two OP AMPs (b) Design a circuit using only one OP
How do we determine the overall gain of a cascaded system of AV1, AV2, and AV3 in dB, in absolute What do we do if all the gains are given in dB, absolute and dB
Design the electrical system for a shopping center with 500,000 square feet at least 30 spaces of three different sizes (5,000, 10,000 and 25,000 sf). They may be offices, banks, restaurants and sho
Write an ABEL program for a combinational logic function with five input bits N4-N0 representing an integer between 0 and 31 and two outputs M3 and M5 to indicate if the number is a multiple of 3 or
Determine the position x and the tension in the cord that is required for equilibrium. The cord passes through the smooth ring at B and has an unstretched length of 6ft and stiffness of k = 50lb/ft.
An electric field in free space is given as E=(x,4z,4). Given VA=10v, calculate the electric potential difference VAB & VB, where A is (1,1,1) and B is (3,3,3), assuming V=9 at (2,4,6).