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Under high-signal test conditions, a certain audio amplifier supplies a 24 V rms 1-kHz sinusoidal voltage to an 8- Ω load. The power supply delivers 4 A at a voltage of 50 V to the amplifier. The signal power supplied by the input source is negligible. Determine the efficiency and the power dissipated in them amplifier.
The voltage across a 10-µF capacitor is given by v(t)=100sin(1000t). Find expression for the current, power, and stored energy. Sketch the waveforms to scale versus time.
You are repairing a guided transmission system made up oftransmitter module, coaxial link and a receiver. The receiver'serror rate has jumped dramatically recently after an electrical storm when several repairs were made to the system.
Two in finitely long, very thin wires lie on the x and y axes and carry currents as shown in Figure. Show the direction of the forces on the wires due to the magnetic fields on the positive and negative part of each axis, assuming that Ix and Iy ar..
The residential sector of PA consumed about 150.6x1012 Btu of electricity (www.eia.doe.gov). Assuming all of this energy comes from bituminous coal with a heating value of 14,000 Btu/lb. How MUCH coal did we burn?
Draw the equivalent circuit referred to the high-voltage side.
If the cutoff between "insecure" and "secure" were x amount of time, how long would a secure password have to be. State and justify your assumptions regarding the character set from which the password is selected and the amount of time required to..
a curve of radius 159 m is banked at an angle of 11deg. an 810-kg car negotiates the curve at 93 kmh without
a. What dopant should the engineer use to obtain the largest fraction of the boule with a doping concentration between 2 - 6 x 1014 cm-3 b. What is the range in resistivity values for this doping variation c. What is the weights of the dopant and Si..
in a hydroelectric generating station the difference in level between ,the water surface and turbine driving the generators is 425 meters.if 1250 liters of water is required to generate 1 kwh of electric energy.find the overall efficiency
Derive the state space equation of a DC motor with: 1)supply voltage and load torque as inputs and 2)armature current, angular speed as outputs.
100 kg of a certain gas is contained within a piston-cylinder assembly. the gas undergoes a processwhich the pressure volume relationship is (PV)^n = constant. The initial pressure is 6 bars, the initial volume is 0.2 cubic meters
Find the electric field of a long line charge at a radial distance where the potential is 12V higher than at a radial distance \(r_{1}=1m\) where the magnitude of the electric field is 5V/m .
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