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A 50Hz 4 pole turbo- generator rated at 20 MVA,13.2 kV has inert ia constant of H = 9.0kW-sec/kVA. Determine the kinetic energy stored in the rotorat synchronous speed. Determine the acceleration if the input less the rotational losses is 25,000hp and the electric power developed is 15 MW. Ifthe acceleration computed for the generator is constant for a period of 15 cycles,determine the change in torque angle in that period and the r.p.m. at the end of15 cycles. Assume that the generator is synchronized with a large system and has no accelerating torque before the 15 cycle period begins.
design a variable power supply of 0-25 V and 0-5 A with load voltage 5 V and load current 1 A. the primary voltage is 120 Vrms and 60 Hz. determine all values each component, use diode of Si.
A 1000.0 kg car is moving at 15 km/h. If a 2000.0 kg truck has 18 times the kinetic energy of the car, how fast is the truck moving in km/h
1. Define the function f[n] = en/4 sin(n/10)u[n] using Matlab inline function. Plot this function using stem command over [5, 20]. 2. Use Matlab inline and stem functions to plot u[n] and delta[n] over [10, 10]. 3. find out what Matlab filter functi..
If we connect the two diodes from Problem 6 in parallel, andforce (using a constant current source) 500μA through them, what will the voltage be across each diode, and what will thecurrent be in each diode
Phase current - Neutral Grounded Assume that the load is star connected with the neutral grounded. Each phase has a series RL load with R = 5 ohms and L = 20 mH. Calculate and plot the Phase a current Ia using Fourier techniques.
A Si sample is uniformly doped with phosphorus at 5 E 16 cm^-3. We make a p-n junction by implanting boron atoms into the surface layer. The implanted depth is 0.15 µm. What should the surface concentration of the boron implant
Let x(t) = cos(3/4(t+1/2)+1/4) a. Determine the frequency, the period of x(t) b. Given another signal, y(t)= sin(3/4(t+1)+3/8), is y(t) identical to x(t) Why
A continuous-time (CT) function is non-zero over a range of its argument from 0 to 4. It is convolved with a function which is non-zero over a range of its argument from -3 to -1. What is the non-zero range of the convolution of the two
Consider a regenerative Rankine cycle with a 600C and 4-MPa throttle, a 5-kPa condenser, and an open feedwater heater at 500 kPa. Turbine efficiencies are 85%. (a) Draw labeled, coordinated T-s and flow diagrams.
Solar Cell Consider a GaAs PN junction solar cell with the following parameters. Na=10^17 cm^-3, Nd= 2*10^16 cm^-3, Dn=190 cm^2/s, Dp=10 cm^2/s, Tn0=10^-7s, and Tp0=10^-8s.
Find the force exerted on a point charge Q1 by the point charges Q2 andQ3. Assume that Q1 =2.5[nC], Q2 = -12.0[nC], andQ3= -1.7[nC] are located at (0,-1,2)[m],(1.5,2,-1)[m],k and (-1,-1.5,2)[m], respectively.
The propagating pulse passes an observer at x=0. The peak of the pulse can be approximated by a parabola, v(t)=20 (1 - 10t^2), where v is the mV and t is in ms. (a) find the current along at x=0, t=0 (b) find the membrane current per unit area at ..
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