sample test 3

# sample test 3 - 0.8V cos(2 25,000 t )V v am (t) 4. Given...

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ECE200 Test #3 Print Name ________________________________________ By signing I am stating that I have taken this quiz in accordance with the NCSU honor code. Signature __________________________________________

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1. For the circuit above, use the properties of an ideal op amp to find Vout. - + 2V 2K 3V 1K 10K Vout
2. Use the properties of an ideal op amp to find all the node voltages. 1K 3V - + 5K - + V out 4K 2K 2K 4K 2V 6K

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3. Given the screen shot and the amplitude modulation process shown above: a. Determine the modulation index. b. Determine the center frequency of the spectrum analyzer. c. Determine the frequency span of the spectrum analyzer. d. Determine the power in the upper sideband. 0.5cos(1000t) V

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Unformatted text preview: 0.8V cos(2 25,000 t )V v am (t) 4. Given the above amplitude modulated signal answer the questions below. a. Determine the frequency of the original modulating signal. b. Determine the carrier frequency. c. Calculate the modulation index. d. Calculate the antenna length required to efficiently transmit this signal. e. Calculate the inductor value required to tune to this signal with a 1nF capacitor. Volts t t t t v m )] 5000 2 cos( 3 ) 3000 2 cos( 2 ) 1000 2 cos( 1 [ ) ( + + = 5. Given the amplitude modulation process is shown above. a. Plot the magnitude spectrum of the am signal. b. Determine the power in the carrier, upper sideband, and lower sideband. v m (t) 8V cos(2 600,000 t ) v am (t)...
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## This test prep was uploaded on 03/20/2008 for the course ECE 200 taught by Professor Escuti during the Fall '07 term at N.C. State.

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sample test 3 - 0.8V cos(2 25,000 t )V v am (t) 4. Given...

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