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Three amplifiers with power gains of 15, 22, and 7 are cascaded. The input power is 120 µW. What is the output power of the final amplifier stage?
A two-wire copper transmission line is embedded in a dielectric material with εr = 2.6 and σ = 2X10-6 S/m. Its wires are sperated by 3 cm and their radii are 1mm each. Calculate the line parameters R', L', G', and C' at 2GHz.
20 SI fibers, 2 km long each, are spliced together for a 40 km link. Each fiber has a loss rate of 1-dB/km and a numerical aperture of 0.24. Each splice adds 0.5 dB of loss. A laser diode has a threshold current of 10 mA and emits at 3 mW/mA rate.
A coil is placed in series with a resistance of 30 ohms. When the combination is connected to a 220 V, 60 Hz source, the current is 4.2 A and the power drawn by the circuit is 670 W.
Clearcly, any noise will pass straight through to the ADC subsystem, introducing measurement error. You have two choices to mitigate this: SW filtering and HW filtering. Assume the uC sample rate, Fs, is 100 Hz with 8 bit resolution.
A limited source diffusion is used to define the base of an npn transistor. Estimate the starting concentration of impurity if the base-collector junction lies 1micro-meter below the surface after 2h diffusion at 1100 degrees C.
A rod on the surface of Jupiter's moon Callisto has a volume of 0.3 cubic meters. Determine the weigh of the rod in units of pounds-force. The specific gravity is 4.7 gravitational acceleration on Callisto is 1.25 meters per second squared.
The resistance of the coil is 0.2 ohm. The inductance of the coil is 1.2e-4 H. The rotor inertia is 1.0e-5 kg m2. The current to torque gain is 0.03 Nm/A. The friction torque is 0.09 Nm. A 12 V voltage source is applied to the motor.
A lossless transmission line of electrical length l = 0.3? is terminated with a complex load impedance . Find the reflection coefficient at the load, the SWR on the line, the reflection coefficient at the input of the line
Independent of circuit details, for a digital input code of (b1, b2, b3, .... bn), the output of an n-bit digital to analog conversion output is of the form output = K (b1 + (b2/2)+ (b3/4)...+(bn/ 2^n-1)) For a particular 5 bit DAC the output volta..
Write C++ statements that accomplish each of the following: a. Declare and initialize int variables x to 25 and y to 18. b. Declare and initialize an int variable temp to 10 and a char variable ch to 'A'. c. Add 5 to the int variable x which alrea..
A sequence of 10 bits is transmitted over a binary symmetric channel with bit error probability Pe. Assume that bit errors occur independently. The sequence is considered to be received in error if more than two bit errors occur.
What is the clearance requirement for a 120/240 V, single-phase, three-wire service at the point of attachment to the building Over the driveway Over the main roadway
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