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A factory has the following four major loads:
• A motor rated at 5 hp, 0.8 pf lagging (1 hp = 0.7457 kW).
• A heater rated at 1.2 kW, 1.0 pf.
• Ten 120-W lightbulbs.
• A synchronous motor rated at 1.6 kVA, 0.6 pf leading.
(a) Calculate the total real and reactive power.
(b) Find the overall power factor.
A boost converter is to be employed as part of a power factor correction circuit. The input is 220 v rms 60 Hz single phase and the output is 400 V dc. It is to supply a dc load drawing 10 A.
Consider two signals that have the same frequency. When the amplitude of the first signal is at its maximum, the amplitude of the second signal is at half its maximum from the zero level. What is the phase shift between the two signals
A majority function is generated in a combinational circuit when the output is equal to 1 if the input variables have more 1's than 0's. The output is 0 otherwise. Design a 3-input (A, B, C) majority function. Use K-maps to simplify the circuit. D..
Write a C-Program that tells whether or not there are repeated cards amoung a 2-d array[4][13]. It returns "true" if it does. The program needs a function to determine whether or not it has repeated cards.
A negative charge of 2.0 micro coulombs is held at a distance of 0.30 m from a negative charge of 1.2 micro coulombs. Find the electrical force on the second charge due to the first charge, giving magnitude and direction.
calculate the potential variation vx electric field and the depletion layer width for a graded p-n junction that is
Design an ac-dc voltage converter based on half-wave rectification and filtering. The requirements are: 1. Choose the values of the load resistor R and the capacitor C so that the converter will have a ripple factor of 10%
Explain why AC Needs More Insulation Than DC for the Same Working Voltage Level?
Is the impact of media on our sustenance decisions something to be thankful for? some explanation would be appreciated.
Consider a Si p-n junction at room temperature. If the doping concentrations are NA=1016 cm-3 and ND=1015 cm-3, what is the depletion width also known as space charge width Also find the maximum electric field.
The building has 49 stories and there are up to 600 devices on each floor. To alleviate traffic on the fiber backbone, you want each floor to be its own subnet. Just list the first three and last two valid network ID's & address ranges
The voltage and current in the Laplace domain for a certain system is given by V (s) = 1/12 1/s^2 +3, I(s) = s/s^2+3. Is this system best described as resistive, capacitive, or inductive?
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