stion 3:
A half-wave rectifier with a capacitor filter has Vm = 200 V, R = 1
kw, C = 1000 pF, and
w = 377
(a) Determine the ratio of the RC time constant to the period of
the input sine wave.
What is the significance of this ratio? (b) Determine the
peak-to-peak ripple voltage
using the exact equations. (c) Determine the ripple using the
approximate formula in Eq.
(3-51).
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Design and model a battery charger with filter, diode bridge, and transformer. The battery to recharge is 12 VDC (auto). Suppose the source is a 120 VAC @ 60HZ residential circuit. The output voltage cannot vary more than 5%. Prepare a cost estimate for your design and compare the cost with business models. Explain the differences in cost. Investigate the environmental and social impact of producing 1,000,000 units of each. Assume that a social job is generated for every $ 50,000 of investment and 1 Lb. of CO2 for each environmental KWH of energy used in the production of the units.
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Why is the starting current high in a DC motor? Explain the working of a four-point starter for a DC machine.
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(b) P-type doping in deep ultraviolet AlGaN based LEDs suffer from low hole mobility.
(i) Sketch a design of a tunnel junction for a DUV LED operating at 280 nm.
Explain how the tunnel junction operates in a DUV LED.
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SYSTEM VERILOG:
Using your preferred HDL program, design a complete 4-bit Carry
Look Ahead (CLA) adder
module.
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Draw a sample metal detector scenario and explain the target detection principle through the electromagnetic interaction equation. Give an example of an application where the metal detector performs well and badly. Which auxiliary sensor can be used to understand that the material is explosive?
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if the received power at a reference distance do=1km,
is equal to 1 microwatt, Find the received power at distances 21km,
5km,10km and 20km from the same transmitters.
I) free space
ii) n=4
iii) two ray ground reflection using the exact expression.
Assume f=1800MHz.
ht=40,
hr= 3m, Gt=Gr= 0db.
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Elaborate with your own words the importance of Laplace transform in electric circuit analysis. Explain also the applications of Laplace transform in communication systems.
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Physics principles behind the use of induction type instruments
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Q \ What are transmission lines and what are the effects and causes of transmission lines, then mention the difference between the spread of electromagnetic waves in transmission lines and spread in free space?
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State four (4) possible causes each of the following
troubles in dc motor and suggest two
solutions to avert them:
(i) sparking at brushes, and (ii) overheating.
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a Matlab code for Kalman Filter to combine GPS and Odometer
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How do I solve short-term load forecasting using Multiple Linear Regression? Can anyone provide me a step by step solution with a sample data?
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