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A public transit authority is evaluating whether to purchase new high-speed railcars from Siemens AG or General Electric. The Siemens AG cars cost $275,000 each, are expected to last ten years and have anticipated annual maintenance costs of $10,000 each. The General Electric cars cost $195,000, are expected to last six years and have anticipated annual maintenance costs of $15,000 each. If the transit authority's cost of capital is 8%, and the cost is spread evenly over each year, which manufacturer should they chose? (Hint: Annualize the cost using the PMT function in Excel.) Does your conclusion change if General Electric guarantees that annual maintenance on their railcars will not exceed $10,000 each?
determine the maximum and minimum spectral frequencies received from a stationary gsm transmitter that has a center
Two long parallel wires A and B carry steady currents i a and i b , respectively, in the same direction . The distance between the wires is d. The wires exert forces on each other. Are the forces attractive or repulsive.
construct a vertical line on your I versus V graph at the point V=5V. this line will intersect each of the sloping lines at two separate points. explain the significance of these intersections.
The pumps exhibit a surging effect with a period of 2.2 sec. What is the minimum sampling rate to ensure quality data. How much time can be spent processing each station's data. Data acquisition hardware and software take 200µ sec for a channel.
Design a circuit that will display the decimal numbers that are less than 60 by using two 7-segment displays. The number 60 should be displayed as 00. Use the least amount of IC's as possible.
Sketch the theoretical torque vs. speed characteristics for a series, shunt, and compound connected DC motor. Describe what will happen if a series motor is run under no load conditions. describe what will happen if a shunt motor experiences a lo..
How to decide the shortest possible clock period for a synchronous circuit with the flop-based clocking. What is the hold time of a register. How does the hold time constrain the circuit delays for a synchronous circuit.
What are the distinguishing features of the response in the pass-band? What are the distinguishing features of the response in the stop-band? What is an all pass filter?
Assuming the bandgap of GaAs, Eg1 = 1.424 eV and that of AiAs, Eg2 = 2.671 eV, find the required AI - fraction x in AIxGa1As compound to fabricate the material for red light emission with the wavelength lambda = 652 nm.
There are 2 stages of pipeline. 1st stage: max delay 6.5ns, min delay 2.5ns. 2nd stage: max delay 5ns, min delay 2ns. Setup time, hold time and flip flop delays = 0.1ns.
A home entertainment centerhas four different audio sources that can be played over the sameset of speakers. Each audio source, named A, B, C, and D, isconnected using 8 wires on which an 8-bit audio signal is transmitted.
Plot the signal x(n) 0
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