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Assume that an automobile has a 15 gallon fuel tank, and it is possible to refill the tank in 5 minutes. The fuel tank contains 33 kWh per gallon. If the vehicle were to be replaced by an electric vehicle that charges from the power grid, how much power would it draw (in W, kW, or MW) to recharge at the same rate as the gasoline powered automobile?
A Tesla Model S contains an 85 kWh battery and can be charged at a rate of 22 kW. Assuming no losses (100% efficency), how long (in hours) will the car take to charge?
The gasoline powered car has a range of 375 mi, and the Tesla Model S has a range of 300 mi. How much more efficient in terms of miles per kWh is the Tesla than the gasoline powered car?
The solar constant at Earth orbit (1 AU = 1 Astronomical Unit - Sun-Earth distance) is ~1400 Watts/m2. Assuming that this Poynting flux magnitude can be associated with a single E- and Hfield (i.e., E × H ),
Given a course voltage of 10V, a source resistance of 10 ohms, a 10mH inductor, and a 5nF capacitor, choose a load resistance and draw a circuit that will have an underdamped (decaying sine wave) second order transient response.
Explain the function of the HMI in a SCADA system.
what are two fundamental advances in the circuit theory that were developed in the 19th century in response to the challenges of telegraphy?
Draw the positive, negative, and zero sequence networks for the system. Include all impedance values and determine the bus voltages at midnight? What problem(s) do you detect?
The magnetic tape recorder uses linear analog to digital encoding. Telephone systems use non linear analog to digital conversion. Explain the difference.
What is the memory layout of the 16-bit value, 0x7654 in a big-endian 16-bit machine.
The network is used for voice communications. Is it possible for one mobile unit to connect to another mobile unit directly? What advantage is there in connecting through the hub?
How many different code words are there How many code words have exactly two 0's. If 0 and 1 are equally likely, what is the probability to obtain a code word with exactly two 0's
The duration of a cellular call is an exponential random variable with expected value of 3 minutes. A subscriber makes 120 calls each month. Use the central limit theorem to estimate the probability that the subscriber uses at least 400 minutes.
We want to sample the 2-D continuous signal f(x,y)=exp{-\(pi(x^{2}+y^{2})\)} by means of a rectangular sampling scheme to obtain 1.5 samples per millimeter. Determine the PSF h(x,y) of an ideal low pass anti aliasing filter
Bill will have an adjusted gross income this year of $70,000. Valerie has an adjusted gross income of $1500 a month. Bill and Valerie have agreed that Valerie should continue working only until the federal income tax on their joint income tax retu..
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