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CS601 Current Midterm Paper Fall 2013 File 3


Shared by Hira Ghumam


Mine todays paper of cs601
Mcqs (20 marks)
Q21. Define the Audio frequency spectrum?(2 marks)
Answer:
Audio frequency spectrum is measured in Hertz's (Hz) and tells the range of audible audio. The human hearing range is usually 20-20000Hz, but especially the audibility of the top end of the spectrum declines with age. Most software analyzers measure between 0 Hz and 16000-24000kHz
Q22.Explain the function of  DCE,DTE in the network?(2 marks)
Answer:
DTE(Data terminal Equiment)
DCE(Data circuit terminating Equiment )

Q23.we have an audio signal with a BW of 10HZ .what is the BW needed if we Modulate the signalusing AM? (3 marks)
Answer: AM=Twice of band width
BW=Band width
BW=2*10HZ=20KHZ
AM=20KHZ
Q24.write the degree when the cycle is complete in the frequency modulation?
1)Full cycle
2)Half cycle
3)Quarter cycle              (3 marks)
Q25.In the radio transmition when we  convert anolge signal in to the digital signal which senior is required explain ?(5marks)
Q26.Explain the convertion Digital to analog in
Efect of Baud rate
Efect of noise
Efect of tranmision speed

Best of luck all
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