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Which one of the following is analog?
pwm
pwm
See lessThe disadvantage of FM over AM is that
large bandwidth is required
large bandwidth is required
See lessFor telegraphy the most commonly used modulation system is
fsk
fsk
See lessCommercial Frequency deviation of FM is
75 khz
75 khz
See lessThe colour of an object is decided by
reflected colour for opaque object and wavelength transmitted through it for transparent objects
reflected colour for opaque object and wavelength transmitted through it for
transparent objects
See lessIn Pulse Code Modulation system
large bandwidth is required
large bandwidth is required
See lessWhich of the following statements is correct?
convex lens has positive focal power and concave lens have negative focal power
convex lens has positive focal power and concave lens have negative focal power
See lessIn Modulation, “carrier” is
voltage for which frequency, phase or amplitude is varied
voltage for which frequency, phase or amplitude is varied
See lessTo eliminate ghosts in the picture
change the antenna orientation of location
change the antenna orientation of location
See lessWhich of the following does not cause losses in optical fibre cables?
stepped index operation
stepped index operation
See less