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The noise voltage in an electric circuit can be modeled as a Gaussian random variable with 0 mean and 10^-4 standard deviation. This noise passes through a half wave rectifier with the characterist
A 60-watt outdoor lightbulb is advertised as having an average life (i.e. MTTF) of 1,000 operating hours. However, experience has shown that it will also fail on demand an average of once every 120
The time to failure of fluorescent lights in a large office building is exponentially distributed with a failure rate of 0.03125 hours. How many spare tubes must the building custodian maintain to
Consider two identical and redundant CFR (Constant Failure Rate) components having a guaranteed life of 2 months and a failure rate of 0.15 failures per year. What is the system reliability for 10,
The average power is not necessarily equal to the average current times the average voltage. To show this, find a voltage waveform and current waveform where each has a zero average value but their
find the complete functions, p(t) and w(t) supplied by the element, not just a number, and graph p(t) and w(t). Choose appropriate intervals of time for your graphs. Assume that both v(t) and i(t) a
find the one-way propagation delay for a 10 meter length. Find the two-way propagation delay. (The two-way delay is the time it takes for the wave to travel from the source to the load and back to
A buffer amplifier with a gain of 1 V/V has an input resistance of 1M and an output resistance of 10 ohm. It is connected between a 1-V, 100-k ohm source and a 100-ohm load. What load voltage result
Two balanced three-plia.se loads that are connected in parallel are fed by a three-phase line having a series impedance of (0.4 + j2.7) ohm per phase. One of the loads absorbs 560 kVA at 0.707 power
A machinable grade of aluminum is to be milled on an NC machine with a 20 mm diameter four tooth end miling cutter, Cutting speed = 120 m/min and feed = 0.008 mm/tooth. Convert these values to rev/m
A 50 hp, 460 V, three phase induction motor draws 61 amps when operating at rated voltage and at a power factor of 0.85 lagging when supplying a rated load. knowns: 1hp=746watts effeciency (n) = Pou
Suppose two points P1 and P2 are tossed at random and independently onto a line segment of length L. What is the probability that the absolute distance between the two points does not exceed l.
Calculate the location of Ei in silicon at liquid nitrogen temperature(77k), at room temperature 300k and at 100 degree celsius (let mp =1.0mo and mn= .19m0) Is it reasonable to assume that Ei is th
A temperature sensor has a static transfer function of 0.15mV/degrees C and a time constant of 3.3 s. If a step change of 22 degress C to 50 degress C is applied at t = 0, find the output voltages a
Suddenly there is a short-circuit on the electric grid, and the electrical output goes to zero for 2 seconds. Calculate the increase in speed in rpm during this interval. Assume that the shaft-tor
determine the current drawn from a 3 phase 220 V line by a 3 phase 15kW motor operating at half load, 85% efficiency and .8 pf lagging. Find the values of real and reactive power drawn from the lin
An amplifier with a power gain of 3dB is to be characterized. The test apparatus provides a SNR of 20dB at the input and measures a SNR of 15dB at the output. Find the amplifier's NF. Specifications
A three phase load draws 100kW at a poer factor of 0.7 laggaing from a 220V line to line. In parallel with this load is a three phase capacitor bank which draws 60kVAR. Find the total line current
A three phase motor draws 20kva at 0.7 lagging power factor from a 240 V source. Determine the kVAR rating of the capacitors to make the combined power factor 0.9 lagging and determine the line cur
1. Write an algorithm to carry out subtraction of two binary numbers (the skeleton was given in the class). Include all the conditions for the given numbers. 2. Write an algorithm to carr
Define a pointer to a variable as a char data type set the pointer equal to Hello World Print the entire contents of the variable Print the 4th and 6th positions of the variable. Sample output: Hell
find the number of years that the country can go without constructing a generating plant before the load exceeds the generating capacity. Assum a 5% annual growth rate in demand.
Design the simplest circuit that has three inputs x1,x2, x3, which produces an output value of 1whenever EXACTLY one or two of the input variables have the value1; otherwise, the output has to be 0.
A circle touches the x axis and also touches another fixed circle with center (0,3) and radius = 2 units. What is the locus of the center of the (first) circle
The maximum radius a falling liquid drop can have without breaking apart is given by the equation: R = sqrt((sigma/gp)) where sigma is the liquid surface tension, g is the acceleration due to gravity,