In commercial FM broadcasting, the maximum frequency deviation is normally 75 KHz
Description : What is the deviation ratio for an FM-phone signal having a maximum frequency swing of plus or minus 5 kHz and accepting a maximum modulation rate of 3kHz? A. 60 B. 0.16 C. 0.6 D. 1.66
Last Answer : D. 1.66
Description : What is meant by the term modulation index? A. The processor index. B. The ratio between the deviation of a frequency modulated signal and the modulating frequency. C. The FM signal-to-noise ratio. D. The ratio of the maximum carrier frequency deviation to the highest audio modulating frequency.
Last Answer : B. The ratio between the deviation of a frequency modulated signal and the modulating frequency.
Description : In a FM system, the maximum deviation is 75KHz. Find bandwidth for modulating frequency i. fm=500Hz ii. fm=5KHz iii. fm=10KHz Draw conclusion for bandwidth of FM from answer.
Last Answer : Given deviation∆=75kHz i) fm=500Hz bandwidth B.W=2(∆+fm) =2(75k+500)=151kHz ii). fm=5KHz bandwidth B.W=2(∆+fm) =2(75k+5k)=160KHz iii) fm=10KHz bandwidth B.W=2(∆+fm) =2(75k+10k)=170KHz As the modulating frequency increases bandwidth also increases.
Description : Compare narrow band FM with wide-band FM w.r.t. following points. (i) Modulation index (ii) Maximum deviation (iii)Range of modulating frequency (iv)Application
Last Answer : Sr. No Parameters Narrow band FM Wide band FM 1 Modulation index Less than or slightly greater than 1 Greater than 1 2 Maximum deviation ... like police wireless, ambulance etc. Entertainment broadcasting can be used for high quality music transmission
Description : The allowable deviation ratio of commercial FM broadcast. A. 25 B. 15 C. 5 D. 75
Last Answer : C. 5
Description : The frequency range of FM radio is
Last Answer : The frequency range of FM radio is 88MHz to 108MHz
Description : What is the approximate bandwidth of an FM system with 10 kHz of modulating frequency and a 150 kHz of frequency deviation? A. 300 kHz B. 320 kHz C. 150 kHz D. 200 kHz
Last Answer : B. 320 kHz
Description : For FM signal, the frequency deviation
Last Answer : For FM signal, the frequency deviation Independent of the modulation frequency
Description : The modulation index of a FM Signal having modulating frequency 2 KHz and Max deviation is 10 KHz, is: - a) 2 b) 5 c) 3 d) 4
Last Answer : The modulation index of a FM Signal having modulating frequency 2 KHz and Max deviation is 10 KHz, is: - 5
Description : Cellular radios use FM with a maximum deviation of A. ±30 khz B. ±75 khz C. ±25 khz D. ±12 khz
Last Answer : D. ±12 khz
Description : Define modulation index in FM. What is maximum value of deviation ratio.
Last Answer : Modulation Index of FM: It is defined as the ratio of Frequency Deviation (δ) to the modulating signal frequency (fm). (OR)
Description : For television broadcasting, what frequency is employed normally? -Do You Know?
Last Answer : answer:
Description : For television broadcasting, what frequency is employed normally?
Last Answer : 30 – 300 MHz
Description : ______ polarization is employed in FM broadcasting A. Horizontal B. Vertical C. Circular D. Bidirectional
Last Answer : A. Horizontal
Description : Which does not use vertical polarization antenna? A. AM Broadcasting B. FM Broadcasting C. Mobile Communications D. Satellite Communications
Last Answer : B. FM Broadcasting
Description : The carrier swing necessary to provide 80% modulation in the FM broadcasting band is __________. A. 150 kHz B. 120 kHz C. 60 kHz D. 75 kHz
Last Answer : B. 120 kHz
Description : ECE Board Exam March 1996 The method of generating FM used by broadcasting station is A. direct B. all of these C. indirect D. insertion
Last Answer : C. indirect
Description : Indicate which one of the following is NOT an advantage of FM over AM? (1) Better noise immunity is provided (2) Lower bandwidth is required (3) The transmitted power is more useful (4) Less modulating power is required
Last Answer : Indicate which one of the following is NOT an advantage of FM over AM? (1) Better noise immunity is provided (2) Lower bandwidth is required (3) The transmitted power is more useful (4) Less modulating power is required
Description : Theoretical bandwidth requirement for FM system is: (1) Same as that of the modulating signal bandwidth (2) Twice of modulating signal Bandwidth (3) Thrice as of modulating signal Bandwidth (4) Infinite
Last Answer : Theoretical bandwidth requirement for FM system is: Infinite
Last Answer : In AM the amplitude of carrier components remains constant, while in FM it does not remain constant.
Description : How can I fix this Mic gain pot inside President Grant 2 premium for FM deviation as broken what can I replace it with?
Last Answer : See if your library has a Howard W. Sams Photofacts folder forthat unit to determine the correct part.
Description : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is
Last Answer : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is 32 Kbits/sec
Last Answer : The maximum Usable Frequency is dependent on the electron density of the ionospheric layer.
Description : What is meant by the term deviation ratio? A. The ratio of the audio modulating frequency to the center carrier frequency. B. The ratio of the maximum carrier frequency deviation to the highest ... . D. The ratio of the highest audio modulating frequency to the average audio modulating frequency.
Last Answer : B. The ratio of the maximum carrier frequency deviation to the highest audio modulating frequency.
Description : What is meant by the term deviation ratio? A. The ratio of the carrier center frequency to the audio modulating frequency B. The ratio of the highest audio modulating frequency to the ... audio modulation frequency D. The ratio of the audio modulating frequency to the center carrier frequency
Last Answer : C. The ratio of the maximum carrier frequency deviation to the highest audio modulation frequency
Description : The distribution of heights of American women aged 18 to 24 is approximately normally distributed with a mean of 65.5 inches and standard deviation of 2.5 inches. Calculate the z-score for a woman six feet tall. a. 2.60 b. 4.11 c. 1.04 d. 1.33
Last Answer : a. 2.60
Description : Provided that the ACT is reasonably normally distributed with a mean of 18 and standard deviation of 6, determine the proportion of students with a 33 or higher. a. 0.0062 b. 0.0109 c. 0.0124 d. 0.0217
Last Answer : a. 0.0062
Description : Given IQ scores are approximately normally distributed with a mean of 100 and standard deviation of 15, the proportion of people with IQs above 130 is: a. 95% b. 68% c. 5% d. 2.5%
Last Answer : d. 2.5%
Description : What modulation is normally used with digital data? A. AM B. FM C. SSB D. QPSK
Last Answer : D. QPSK
Description : What is the WAVELENGTH of the carrier wave, in meters, of a radio station which is broadcasting at a frequency of 100 megahertz?
Last Answer : ANSWER: 3 METERS
Description : The Ku frequency band used in satellite communication (for uplink and downlink) is: (1) 14 GHz and 11 GHz (2) 30 GHz and 20 GHz (3) 70 GHz and 50 GHz (4) 60 GHz and 45 GHz
Last Answer : The Ku frequency band used in satellite communication (for uplink and downlink) is: 14 GHz and 11 GHz
Description : The frequency range 30MHz - 300MHz is (A) medium frequency (B) very high frequency (C) super high frequency (D) Infrared frequency
Last Answer : The frequency range 30MHz - 300MHz is very high frequency
Description : In a radio transmitter, the frequency of the crystal oscillator will be stable for a long time if the quality factor of the crystal resonator is (a) > 100 (b) > 500 (c) > 1000 (d) > 20000
Last Answer : In a radio transmitter, the frequency of the crystal oscillator will be stable for a long time if the quality factor of the crystal resonator is > 1000
Description : A rectangular waveguide is 4.2 cm by 1.85 cm. The cut-off frequency of the dominant mode through this waveguide is (a) 3.57 GHz (b) 3.75 GHz (c) 3.70 MHz (d) 3.57 MHz
Last Answer : A rectangular waveguide is 4.2 cm by 1.85 cm. The cut-off frequency of the dominant mode through this waveguide is 3.57 GHz
Description : For an antenna to be frequency-independent, it should expand or contract in proportion to the (a) gain (b) directivity (c) wavelength (d) impedance
Last Answer : For an antenna to be frequency-independent, it should expand or contract in proportion to the impedance
Description : A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is _____kHz. (A) 50000 (B) 0.2 (C) 600 (D) 5
Last Answer : A tuned circuit has a Q of 100 at its resonant frequency of 500 kHz. Its bandwidth is 5 kHz.
Description : The signal is extended from 96KHz to 100KHz, so the minimum sampling frequency required is (a) 8KHz (b) 200KHz (c) 4KHz (d) 100KHz
Last Answer : 200KHZ
Last Answer : If a wave has frequency of 2 Hz, it has a period of 1/2 s.
Last Answer : In CCIR system B standard, the line frequency 15,625 lines/sec.
Last Answer : In the telephone, the dial tone has a frequency of 33 Hz.
Description : How do I find the mean and standard deviation from a frequency table?
Last Answer : Do you have a graphing calculator?
Description : Refer to the deviation of the operating frequency of a crystal oscillator from its nominal value due to temperature variations. A. Drift B. Flash over C. Frequency deviation D. Deviation ratio
Last Answer : A. Drift
Description : What is meant by frequency deviation?
Last Answer : The difference between the carrier frequency of an fm signal and its maximum frequency excursion when modulated.
Description : In the event of an act of unlawful interference, which of the following is the correct procedure to be taken by the pilot in command? a. Squawk 7700 if the situation requires and continue ... the flight plan, climb or descend to altitudes that differ from the normal cruising altitudes by 1000ft
Last Answer : c. Squawk 7500 (or 7700 if required) and broadcast a warning if the situation forces deviation from the cleared flight plan
Description : What would happen if you plugged an FM transmitter into a radio's headphone jack and set the radio to the transmitter's transmitting frequency?
Last Answer : You would get a positive feedback loop, probably resulting in an audible tone. The amplitude would be limited by the transmitter’s modulation limiter, so all you’d have is a very ordinary oscillator.
Description : What is the FM frequency in the world ?
Last Answer : FM frequency worldwide is 87.5-108.0 Hz
Description : What is the channel number of an FM station with a carrier frequency of 99.5 MHz? A. 256 B. 258 C. 257 D. 259
Last Answer : B. 258
Description : An FM receiver whose intermediate frequency is 10.7 MHz, is experiencing image channel interference from a station transmitting on 121.1 MHz. If the local oscillator is tracking above, the receiver is tuned to A. 131.8 MHz B. 110.4 MHz C. 142.5 MHz D. 99.7 MHz
Last Answer : D. 99.7 MHz
Description : What is a frequency discriminator? A. A circuit for filtering two closely adjacent signals B. A circuit for detecting FM signals C. An FM generator D. An automatic bandswitching circuit.
Last Answer : B. A circuit for detecting FM signals
Description : Both frequency and phase modulation utilize ________ modulation A. Phase B. AM and FM C. Digital D. Angle
Last Answer : D. Angle