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A 500-kVA, 60Hz, 5000V, Y-connected, 10 pole synchronous has internal parameters of Armature Resistance 1ohm amd Synchronous Reactance 10ohms. The generator is operating at rated values and 0.9 pf leading. Pmech=10000W, Pcore=5000W, Pstray=1000Wa.) Find the internal induced voltage and torque angle.b.) Find the input power to the generator in horsepower and watts.c.) Find the input torque to the generator.d.) If armature current and field current are kept constant, find the new value of the terminal voltage if the power factor is changed to 0.7 lagging.
An OpAMP has a unity gain frequency (ft) of 10MHz and a slew rate of 10V/us and AVoc = 120dB at DC (f=0). Assume VCC = -VEE = 15 Volts.a. Approximate the cutoff frequency of the OPAMP itself. b.
A uniform plane wave propogates in the positive z direction with a frequency of 20 MHz. A probe is at z=0 m measuring the phase to 98 degrees and another probe at z= 2 m measures the phase to be -15 degrees what is the relative dielectric constant..
A 3-D cubic unit cell contains four atoms whose centers are positional halfway up along each of the vertical cell edges and one atom each centered in the middle of the top and bottom faces.
A particular intrinsic semiconductor has a resistivity of 50 -cm at T=300 K and 5 - cm at T=330 K. Neglecting the change in mobility and effective density of states with temperature, determine the bandgap energy of the semiconductor.
Create a program using AsmIDE, which utilizes the Fox 11 68HC11 microcontroller board: Speech timer where max time is 5 minutes Use the switches for:
A system (circuit) is governed by the differential equation: L dx/dt - L dy/dt = Ry(t) where x(t) is the input and y(t) is the output and L and R are an inductor and resistor. Find the complex frequencies associated with the system (circuit).
What is the major difference between a bipolar and a unipolar device Which of the transistor currents is always the largest Which is always the smallest? Which two currents are relatively close in magnitude
A 1 kHz sine wave signal with a power level -10 dBm is applied to the input of the amplifier. What is the power at the amplifier output in dBW?
Write a program that asks a user to input (one at a time) the four numbers to fill a 2x2 matrix. For each number entered, make sure the user knows which number is being entered.
A standard silicon NPN BJT is to be used as an amplifier. The emitter voltage is biased at 4 volts, the base is biased at 5 volts, and the collector is biased at 10 volts. Will this circuit perform as desired? Why or why not.
The noise voltage in an electric circuit can be modeled as a Gaussian random variable with 0 mean and 10^-4 standard deviation. This noise passes through a half wave rectifier with the characteristics g(x) = { x, x>0 and 0, x
What is the resistance of an annealed copper wire that has a length of 500m and a diameter of 0.5 mm. How a diameter two times smaller affects the resistance.
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