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A transistor current source (also known as current ''sink'') was built with a 2N3904. The Ic was measured for different values of a load resistance. It was noticed that Ic was pretty much constant for the first 1900 ohms values, but then it suddenly decreased. Why did that happen?
A transmitter operates with a carrier frequency of 2.0 MHz. It is amplitude modulated by two tones with frequencies of 1300 and 2300Hz. What frequencies are present in the output signal
A 1 kHz sine wave signal with a power level -10 dBm is applied to the input of the amplifier. What is the power at the amplifier output in dBW?
An 80KHz sinusoidal voltage has zero phase angle and a maximum amplitude of 20 mV. When this voltage is applied across the terminals of a capacitor, the resulting steady state current has a maximum amplitude of 0.7 mA.
An AM transmitter radiates 9 kW of power when the carrier is unmodulated and 10.125 kW when the carrier is sinusoidally modulated. Find the modulation index, percentage of modulation.
An automobile battery has an open-circuit voltage of 13.6 V and a total internal resistance of 0.012 ohms. What is the terminal voltage of the cell when it is delivering 250 A to the starter motor
An insurance company has made you the following retirement offer. If you pay them $100,000 now, you will receive payments of $8000 a year for 10 years. After this they will pay you $9000 a year in perpetuity (for ever).
Resistance of Headlights, A 24-volt automotive battery is connected to two headlights, such that the two loads are in parallel
A new project has the following predicted profits. The initial investment is $3,000,000. Yr Revenue 1 $200,000 2 $400,000 3 $600,000 4 $800,000 5 $1,200,000 6 $1,200,000 7 $1,400,000 8 $1,600,000
Each subconductor's radius is 10 cm. There are two configurations, the first one is setting subconductors A and B as a bundle, and C and D as another bundle; the second is setting subconductors A and C as a bundle, and B and D as another bundle.
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
List three standard socket calls that you would expect every connection-oriented server to invoke that would not normally be invoked by any client. Briefy indicate why a typical client would not need to invoke these calls.
What is the magnitude of the frequency component at 30 kHz? The square wave is passed through an ideal rectangular low pass filter that completely attenuates all frequencies higher than 35 kHz. Write down an equation for the spectrum at the output ..
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