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For a low level AM system, the amplifiers modulated stage must be
linear devices
linear devices
See lessA telephone channel requires a bandwidth of about
3 khz
3 khz
See lessA cordless telephone using separate frequencies for transmission in base and portable units is known as
duplex arrangement
duplex arrangement
See lessFor attenuation of high frequencies we should use
shunt capacitance
shunt capacitance
See lessA modem is classified as low speed if data rate handled is
upto 600 bps
upto 600 bps
See lessA woofer should be fed from the input through a
low pass filter
low pass filter
See lessWhich of the following is an indirect way of generating FM?
armstrong modulator
armstrong modulator
See lessWhen the length of antenna is a whole wavelength
the radiation at right angles is zero
the radiation at right angles is zero
See lessCircular polarization
is useful in reducing depolarization effect on received wave
is useful in reducing depolarization effect on received wave
See lessAn FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz.
113
113
See less