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A small gasoline engine can put out 18,000 N-m/min of mechanical power. The engine is used to drive an electrical generator that is 80 percent efficient. 1 N-m = 2.78 X 10-4 W-h. Find the output of the generator in Watts.
A circuit consists of a battery connected to three resistors (60ohm , 30ohm , and 180ohm ) in parallel. The total current through the resistors is 1.9A . Find the emf of the battery.
Design a class - A transformer-coupled emitter-follower amplifier to deliver 10 W to an 8 Ohm speaker. The ambient temp is 25 C and the maximum junction temp is Tj max = 150 C. assume the thermal resistance value are dev-case = 3.2 C/W
g0 is the acceleration of gravity at the surface of the Earth, A is the altitude, and Re is the radius of the Earth, approximately 6,380 kilometers. What is the value of g at an altitude of 20 miles in unites of meters per second squared
What is the motor efficiency as operated?
A certain antenna installation using a transmitting frequency of 1250 kHz uses an insulated vertical tower of height 200 feet. For a 25 kW transmitter power, calculate the electric field strength at a location A at a distance of 25 km.
A silicon (ni= 10^10 cm^-3) p-n junction diode has a maximum electric field of -10^6 V/cm and a depletion layer width of 1 um. The acceptor density in the p-type region is four times larger than the donor density in the n-type region.
Find a minimum two level circuit (corresponding to the sum of products expressions) using AND and one OR gate per function for each of the following sets of functions: f(a,b,c,d) =fm(1,3,5,8,9,10,13,14) g(a,b,c,d) =fm(4,5,6,7,10,13,14)
Let a crappy voice channel occupy 1kHz. To ensure no interefence between channels due to nonideal bandpass filters add a 3.0kHz spacing between channels. How many simultaneous voice channels can you have if allocated a 87MHz bandwidth total
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.
Determine the Voltage across the electrical model of a cell membrane in a nerve cell
A certain signal is modeled by a continuous Gaussian random process X(t) with mean E {X(i)} = 2 and autocorrelation function R(t, r) = 4 + e-0.5|r|. Compute the covariance function C(t, r). Compute the variance of X(t). Write the PDF for a single ..
If we have a transfer function T(s) = |Z(s)|/|P(s)| and we had a pole at s=-500; Then the magnitude would be sqrt(500^2 + w). So how does that not decrease the magnitude of the transfer function at frequencies below 500
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