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    Quiz Questions On Noise Chapter

    Uploaded by

    Shyam Rajapuram
    1. The document contains 20 multiple choice questions about concepts related to noise in communication systems. Specifically, it covers topics like television standards, bandwidth, noise power spectral density, pre-emphasis, signal-to-noise ratios, and receiver models. 2. The questions test understanding of key noise-related terms and specifications used in television, radio broadcasting, and modulation/demodulation systems including aspects like scanning lines, aspect ratios, bandwidths, signal-to-noise ratios, and receiver filter characteristics. 3. Common concepts assessed include definitions of figures of merit, representation of different noise sources, applications of pre-emphasis, and signal and noise levels at different points in modulation/demodulation systems.

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    Quiz Questions On Noise Chapter

    Uploaded by

    Shyam Rajapuram
    40 views3 pages
    1. The document contains 20 multiple choice questions about concepts related to noise in communication systems. Specifically, it covers topics like television standards, bandwidth, noise power spectral density, pre-emphasis, signal-to-noise ratios, and receiver models. 2. The questions test understanding of key noise-related terms and specifications used in television, radio broadcasting, and modulation/demodulation systems including aspects like scanning lines, aspect ratios, bandwidths, signal-to-noise ratios, and receiver filter characteristics. 3. Common concepts assessed include definitions of figures of merit, representation of different noise sources, applications of pre-emphasis, and signal and noise levels at different points in modulation/demodulation systems.

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    1. The document contains 20 multiple choice questions about concepts related to noise in communication systems. Specifically, it covers topics like television standards, bandwidth, noise power spectral density, pre-emphasis, signal-to-noise ratios, and receiver models. 2. The questions test understanding of key noise-related terms and specifications used in television, radio broadcasting, and modulation/demodulation systems including aspects like scanning lines, aspect ratios, bandwidths, signal-to-noise ratios, and receiver filter characteristics. 3. Common concepts assessed include definitions of figures of merit, representation of different noise sources, applications of pre-emphasis, and signal and noise levels at different points in modulation/demodulation systems.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    40 views3 pages

    Quiz Questions On Noise Chapter

    Uploaded by

    Shyam Rajapuram
    1. The document contains 20 multiple choice questions about concepts related to noise in communication systems. Specifically, it covers topics like television standards, bandwidth, noise power spectral density, pre-emphasis, signal-to-noise ratios, and receiver models. 2. The questions test understanding of key noise-related terms and specifications used in television, radio broadcasting, and modulation/demodulation systems including aspects like scanning lines, aspect ratios, bandwidths, signal-to-noise ratios, and receiver filter characteristics. 3. Common concepts assessed include definitions of figures of merit, representation of different noise sources, applications of pre-emphasis, and signal and noise levels at different points in modulation/demodulation systems.

    Copyright:

    © All Rights Reserved
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    of 3

    Quiz questions on Noise chapter

    1. The number of scanning lines used for the transmission of TV signal as per American
    standard is
    a) 525 b) 565 c) 255 d) none
    2. The number of scanning lines in even field is
    a) 262 b)262.5 c) 525 d) none
    3. Aspect ratio of television is ration of
    a) height to width b) width to height c)width to diagonal d)none
    4. The time taken for a frame to be scanned is
    a) 60 sec b)1/60 sec c)30 sec d)1/30 sec
    5. Band width of video signal is
    a) 4.21 GHz b) 4.21MHz c)4.21kHz d)None
    6. IF bandwidth in FM radio broadcasting is
    a)10.7 KHz b) 10.7 MHz c) 200 kHz d)None
    7. Power spectral density of white noise is
    a) No/2 Hz/W b) No/2 W/Hz c) No/2 kW/Hz d) none
    8. Figure of Merit of formula is
    a)SNRO/SNRI b) SNRO/SNRC c) SNRI/SNRC d) none
    9. Narrow band noise is represented by
    a) ni ( t ) cos ( 2 π f c t ) + nq ( t ) sin ( 2 π f c t ) b) ni ( t ) cos ( 2 π f c t ) −nq ( t ) sin ( 2 π f c t ) c)
    none
    10. Figure of merit for SSB receiver is
    a) 1 b) ½ c) 0.1 d) none
    11. Pre-emphasis is
    a) boosting higher frequencies of the modulating signal b) boosting higher
    frequencies of modulated signal c) none
    12. Pre-emphasis is used at the
    a) transmitter b) receiver c) channel d) none
    13. SNRC is defined as the ratio of
    a) average power of the modulated signal to the average power of noise within message
    bandwidth
    b) average power of the modulated signal to the average power of noise both measured at
    the band pass filter (IF filter) output
    c) average power of the demodulated signal to the average power of noise both measured at
    the demodulator output.
    d) none
    14. SNRI is defined as the ratio of
    a) average power of the modulated signal to the average power of noise within message
    bandwidth
    b) average power of the modulated signal to the average power of noise both measured
    at the band pass filter (IF filter) output
    c) average power of the demodulated signal to the average power of noise both measured at
    the demodulator output.
    d) none
    15. SNRO is defined as the ratio of
    a) average power of the modulated signal to the average power of noise within message
    bandwidth
    b) average power of the modulated signal to the average power of noise both measured at the
    band pass filter (IF filter) output
    c) average power of the demodulated signal to the average power of noise both
    measured at the demodulator output.
    d) none
    16. Noise at the output of BPF (IF filter) is a
    a) white noise
    b) narrow band noise
    c) none
    17. The signal component at the output of LPF in DSBSC noisy receiver model is
    a) Acm(t)
    b) ½ Acm(t)
    c) ½ nI(t)
    d) none
    18. The signal power at the output of LPF in DSBSC noisy receiver model is
    a) Ac2P
    b) ¼ Ac2P
    c) ½ Ac2P
    d) none
    19. The mid band frequency of BPF (IF filter) in USB-SSB receiver model is
    a) fc
    b) fc+W
    c) fc –W/2
    d) fc+W/2
    20. Figure of merit for single tone modulation in AM receiver for modulation index of 1 is
    a) 1 b) ½ c)1/3 d)1/4

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