Communication Systems In Modulation, “carrier” is Speech voltage to be transmitted Resultant wave Voltage with constant frequency, phase or amplitude Voltage for which frequency, phase or amplitude is varied Speech voltage to be transmitted Resultant wave Voltage with constant frequency, phase or amplitude Voltage for which frequency, phase or amplitude is varied ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The disadvantage of FM over AM is that Large bandwidth is required Noise is very high for high frequency High modulating power is needed High output power is needed Large bandwidth is required Noise is very high for high frequency High modulating power is needed High output power is needed ANSWER DOWNLOAD EXAMIANS APP
Communication Systems The colour of an object is decided by The wavelength transmitted through it None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour The wavelength transmitted through it None of these Reflected colour for opaque object and wavelength transmitted through it for transparent objects The reflected colour ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For telegraphy the most commonly used modulation system is Single tone modulation Two tone modulation PCM FSK Single tone modulation Two tone modulation PCM FSK ANSWER DOWNLOAD EXAMIANS APP
Communication Systems For a plate-modulated class C amplifier the plate supply voltage is E. The maximum plate cathode voltage could be almost high as 4E 2E 6E 3E 4E 2E 6E 3E ANSWER DOWNLOAD EXAMIANS APP
Communication Systems Leak type bias is used in plate modulated class C amplifier to Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping Prevent over modulation Increase the bandwidth Prevent excessive grid current Prevent tuned circuit damping Prevent over modulation ANSWER DOWNLOAD EXAMIANS APP
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