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A 1.55-µm digital communication system operating at 1 Gb/s receives an average power of -40 dBm at the detector. Assuming that 1 and 0 bits are equally likely to occur, calculate the number of photons received within each 1 bit.
A 300 V, 60 A, 1200 rpm series dc motor has an armature and series field resistance of .2 ohms each. When a .10 ohm resistance is connected in parallel to the winding, the motor's torque is doubled.
John's friend Sven has an "automatic crossover" power supply that can output up to 50V and up to 12Amps. What is the output voltage and current of the supply when John connects a 3O resistor to Sven's supply
Design a Finite State Machine which recognizes the serial pattern 111. Assume serial input is applied to input pin Sin and an output pin labeled Sout is 1 whenever the string is recognized. a) draw a state diagram of your design.
The transfer equation is V_out/V_in. if you factor the second order polynomial what are the two first order polynomials. How do these compare with the first order filter. Has the -3db changed.
Write the VHDL PROCESS statements for a D flip-flop with synchronous active-LOW clear, synchronous active-LOW preset, and responsive to a rising edge clock.
A silicon semiconductor resistor is in the shape of a rectangular bar with a cross sectional area of 1x10-6 cm2 a length of 0.1 cm and is doped with a donor concentration of 5x1016 cm-3. (a) Calculate the resistance of this resistor at 300K.
The nameplate on a 25-MVA, 60-Hz single-phase transformer indicates that it has a voltage rating of 8.0-kV:78-kV. A short-circuit test from the high-voltage side (low-voltage winding short circuited) gives readings of 4.53 kV, 321 A, and 77.5 kW.
Two-wattmeter method is used to measure the power absorbed by a 3-phase induction motor.- Find the power absorbed by the machine. - Find load power factor.
For x(t) --> Linear System --> y(t), x(t) = u(t)-u(t-1) and h(t) = 2e^-t*u(t) Sketch x(t) and h(t) Write down the generic form of the convolution integral Calculate y(t) for t 1, using the convolution integral method.
Find the armature current.
The purchasing department has found an excellent global positioning system circuit card in Germany that can provide your firm with a competitive advantage in the marketplace.
An industrial plant is to be supplied by three identical transformers. A decision must be made whether to purchased afourth transformer to build a sparing transformer system oralternatively, to configure the source as a secondary selective system.
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