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Describe how a medium which amplifies light can be turned into a laser oscillator and describe the spectrum of the output. What are the requirements for oscillation? What happens to the spectrum and time domain output when the laser is mode-locked? Why is a four-level system normally more efficient than a three-level system? What are the primary characteristics of an argon laser?
An MFSK modulation scheme with M = 4has a carrier frequency of 250 kHz, a difference frequency of 25 kHz, and two bits per signal element. Make a frequency assignment for each of the possible data combinations.
Calculate the 5 lowest possible energies of an electron in a hydrogen atom in units of electron volts. Identify all possible electron energies between the lowest energy and 2eV.
for the circuit of a full bridge single phase inverter a. how many controlled pulses are needed over a half cycle of
From a high-level perspective, what is the major difference between the LM324 and the LF347. Which of the performance characteristics are significantly different because of this.
a plane wave is obliquely incident onto the planar interface between mismatched, lossless, nonmagnetic, uniform media, yet undergoes no reflection. If incidence is at 54 degrees to the normal, at what angle to the normal does the transmitted wave ..
What is the energy in joules stored in the capacitor below, The capacitor is shown with 10 volts on each side of it (plus on the left of the capacitor, - on the right), and C = 20 microfarads.
A sample of radiocactive material undergoes decay such that the number of atoms N(t) remaining in the unstable state at time t is related to the number No at t = 0 by the relation N(t) = No exp(t\tau)
An iron ring with a 50-cm mean diameter has a square cross-section of 4 cm2. It is wound with two coils having 1000 and 400 turns. Calculate (a) the self inductance of each coil, and (b) the mutual inductance between them.
For each of the following application: A) Wireless home AC remote.B) Nuclear Power plant monitoring system.
Operating costs are estimated to be $2/MCF and escalate at 3% per year. XYZ has agreed to spend $500,000 now to lay pipelines from each well to the second company's processing plant. What should the minimum price be the first year for this to be a..
How does an RC combination affect the phase plot of an oscillator
Design a 6-bit weighted register DAC whose full scale output voltage is -16V. Logic Levels are 1=+5V and 0=0V. What is the output voltage when input is 001011
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