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An assembly operation for a computer circuit board consists of four operations that can be performed in any order.
a In how many ways can the assembly operation be performed?
b One of the operations involves soldering wire to a microchip. If all possible assembly orderings are equally likely, what is the probability that the soldering comes first or second?
A 100 W bulb takes 0.833A and a 200 W bulb takes 1.67 A from a 120V source. If the two bulb were connected across a 240 V source, what current in amperes will flow through the bulbs?
a) Plot the spectrum and the normalized spectrum of x[nT] = 2cos(20*pi*n*T + pi/8) + 4cos(40*pi*n*T + pi/8) for T = 0.01 b) Plot the spectrum and the normalized spectrum of
What will be the heat loss per hour if soda-lime glass instead of steel is used? Calculate the heat loss per hour if steel is used and the thickness is increased to 20 mm (0.79 in.).
A transmission line segment with Zo=50 Ohms and of length l is terminated at a load resistance of RL that can be varied. Sketch the input impedance Zin as a function of RL if (a) l=(wavelength/4) and (b) l=(wavelength/2).
design a DSB-SC modulator to generate a modulated signal km(t)cosωct with the carrier frequency fc = 500kHz (ωc = 2π x 500,000). The following equipment is available in the stockroom: (i) a signal generator of frequency 100 kHz; (ii) a ring modula..
Critical frequency for the input low pass network, and the output low pass network, estimate the values for Cbe, Cjc, Cbc, and Cje. Concider the resistance of the signal sourceRs to be equal to the 1 ohm resister in series with the source.
A circle, centered at the origin with a radius of 2 units, lies in the xy plane. Determine the unit vector in rectangular components that lies in the xy plane, is tangent to the circle at (√3,1,0), and is in the general direction of increasing val..
Write the switching expression for the burglar alarm that produces a logic 1 (rings a bell) when the safe is moved and the control switch is closed, or when the closet is o pen after banking hours, or when the closet is opened with the control swi..
onsider the difference equation- where x(k) is the output and x(k) = 0 for k
The channel bandwidth for the analog AMP's system is restricted to BW= 30 kHz. Determine the noise floor (in dBm) for its mobile receivers assuming all receivers have a noise figure of 10 dB.
Assume the op amp has a finite gain but is otherwise ideal.
A 60-Hz 20-kVA 8000/240-V-rms transformer has the following equivalent-circuit parameters: Find the percentage regulation and power efficiency for the transformer for a rated load having a lagging power factor of 0.8.
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