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The instantaneous values of voltage applied to a single-phase series R-L load, and the resulting currentin the load, are given by the equations:v = 8.0 sin 314.16t V; i = 3.5 sin (314.16t + 60o) A(a) Determine the values of the voltage and current phasors in polar form.(b) Calculate the instantaneous voltage at a time 0.8 ms after it crosses the zero-value axis in a positive going direction.(c) Calculate the instantaneous current at a time 1.6 ms after it crosses the zero-value axis in a positive going direction.(d) Sketch the instantaneous voltage and current waveforms on the same time axis, for one voltage cycle.
Calculate the following. a) What is the magnitude of the voltage in a wall socket if the effective voltage is 240 Vrms b) What is the magnitude of the current if the effective current is 360 mArms
A conducting sphere in free space has a radius of a= 10cm. the capacitance of the isolated sphere is C= 4oa. now let's coat the sphere with a dielectric with fr= 3, and the thickness of the dielectric layer is d.
Two transistors, fabricated with the same technology but having different junction areas, when operated at a base-emitter voltage of 0.72 V, have collector currents of 0.2 mA and 12 mA. Find Is for each device.
The counter must stop at a value which is defined by using the 8 slide switches. Use two seven segment displays to implement the counter, there must be 2 individual counting bits each per seven segment display. The counter should run when a push b..
Instead of recreating the design every time we change the instruction ROM, we want to have a way to change the instructions while the system is running. Discuss how the UART can be used to fill an instruction RAM instead
A balanced Y-connected load of 100 + j50 Ohm is connected to a balanced three-phase source. If the line current is 42 A and the source supplies 12kw, determine (a) the line voltage; (b) the phase voltage.
A solar pond consists of a thin layer of fresh water floating on top of a denser layer of salt water. When the salty layer absorbs sunlight it warms up and much of that heat is held there by the insulating effect of the fresh water above it
Adding dopants to a sample of silicon is found to reduce the Hall coefficient by a factor of 10 and increase the conductivity by a factor of 5. What effect has this dopant addition had on the mean free path
(a) Plot the spectrum of the Fourier series. (b) Determine the trigonometric Fourier series coecients for the first 6 harmonics. (c) Determine the total power of x(t) for the first 6 harmonics (d) How much of the total power of x(t) is in the DC harm..
A three phase motor is connected to a 60Hz electrical source. The motor spins at 600rpm. Find the number of poles in the machine. The output of the above motor is connected to the input of a generator.
An electron is moving with a velocity of 2*10^6 cm/s. Determine the electron energy (in eV)), momentum, and de Broglie wavelength (in angstrom).
Let a crappy voice channel occupy 1kHz. To ensure no interefence between channels due to nonideal bandpass filters add a 3.0kHz spacing between channels. How many simultaneous voice channels can you have if allocated a 87MHz bandwidth total
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