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Assume that an additional inductance can be inserted in series with the load. also assume that the converter has no freewheeling diodes. Calculate the added inductance that leads to a conduction period of 180 degrees when alpha = 30 degrees.
A pulse width modulation (PWM) circuit works by varying the duty cycle of the square wave while keeping the period fixed.
Two rectangular waveguides, one air filled with internal dimensions 2cm x 1cm and the other dielectric filled with internal dimensions 1cm x 0.5cm, have the same cut-off frequency for the dominant mode. what is The relative permittivity of the die..
Compare the frequency response magnitudes for each of the responses above (will need to plot on a logarithmic scale). Comment on the observations noting things such as if the signals are resolvable, the size of the side lobes, etc.
Assume a CDMA system has only 4 walsh codes. If the mobile is assigned W4 and receives a data stream of 11011010, what is the output?
4.What is the fundamental benefit of PLC controls over manual controls 5.Describe the differences between the two methods of scanning during PLC logic solving. Which method holds the advantage over the other
Determine the current drawn from a three-phase 440 V line by a three-phase 15-hp motor operating at full load, 90% efficiency, and 80% power-factor lagging. Find the values of P and Q drawn from the line. (Hint: 1hp = 746W)
an adiabatic throttling process for R-134a takes saturated liquid at 800 kPa entering, and drops the pressure to 280 kPa (constant specific enthalpy). Determine the quality exiting and the specific entropy change for the throttling process.
In order to eliminate the cost of calling cards, the company in the above problem is considering a new policy that requires blocked callers to redial over and over until they get a trunk.
A radio receiver for the HF band covers the frequency range 2 MHz to 30 MHz. The first IF frequency is 3.0 MHz and the local oscillator is above the received signal frequency.
Find the density for germanium (Ge) semiconductor atoms give that its lattice constant a-5.66Å (Angstrom) and atomic weight is 72.59 g/mole.
What is the maximum symbol rate for this link and the number of bits per symbol? What format would you recommend for the transmitted current pulses on this baseband link?
Water is the working fluid in a vapor power cycle with reheat, superheat and reheat. Superheated steam enters the first turbine stage at 8 MPa, 480 C and expands to 0.7 MPa
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