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Two amplifiers are cascaded. The first has supply power of 2W, an input resistance of 1 M Ω, and an input voltage of 2 mV rms. The second has a supply power of 22 W, a load resistance of 8Ω, and output voltage of 12V rms. Determine the overall power gain, dissipated power, and efficiency.
Determine the current drawn from a three-phase 440 V line by a three-phase 15-hp motor operating at full load, 90% efficiency, and 80% power-factor lagging. Find the values of P and Q drawn from the line. (Hint: 1hp = 746W)
A cable TV receiver has an input impedance of 200 ohm The cable TV distribution system uses RG-6 cable. This cable has a characteristic impedance of 75 ohm Design an impedance matching stage to maximize the power transfer
A 360 nm thick film floats on the surface of the water. The indices of refraction of the oil and the water are 1.50 and 1.33, respectively. The surface of the oil is illuminated from above at normal incidence with monochromatic light.
for a motor rated Vrms=230v P=300w pf=0.75lagging,calculate the capacitance C needed to improve the power factor to unity assuem frequency =50Hz sketch current and voltage phasors.
Four hundred grams of nitrogen gas (molecular weight=28g/mole) are stored in a 10-liter container. Set up an excel worksheet to determine the pressure of the gas (in atmospheres) as a function of temperature and volume, assuming nitrogen is an idea..
Although sums behave like integrals, because of the discrete nature of the sums one needs to be careful with the upper and lower limits more than in the integral. To illustrate this, consider the separation of an integral into two integrals.
Design a circuit for control of lights. There are 3 inputs:Reset, start and clock. Three outputs: Red, Yellow, Green, whichare used to turn on the lights. Only one light can be on at anytime. Reset forces the circuit into a state in which the red ..
define a one-dimensional potential well having energies U as a function of position x as follows: U=infinity for x= -1nm to x=0; U=0 eV for x=0 to x=5nm; U=10 eV for x=5nm to x=7nm; U=0 for x>7nm and x
Magnitude bode plot for any given transfer function Can some one teach me an easy way to make a bode plot for any given transfer function magnitude only (not phase).
The Maxwell-Boltzmann distribution is often used to approximate the Fermi- Dirac distribution function. For what range of (E-Ef)/kT is the Maxwell-Boltzmann approximation accurate to within 10%
Write a program for the dragon 12 so you can manipulate all four 7-segment LEDs:You will be able to enter any number or any sequence and be able to display them on the LED's each for one digit, and when you enter a sequence of 4 specific numbers
A HCS12 ATD has been set-up to perform a right-justified, 10-bit, signed operation. What is the expected output for an input voltage of 3.09V The voltage range is 0-5V.5V/4096 = 4.88 mV.
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