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WBCS Main Examination 2023 — Paper IV: General Studies II · Question 120 of 200

Q120
General ScienceComputer Awareness & Technology
Which type of modulation is employed in India for radio transmission?
  1. a.Amplitude modulation
  2. b.Frequency modulation
  3. c.Pulse modulation
  4. d.Phase modulation

No option is correct as printed — this question is disputed. WBPSC awarded the mark to all candidates: two correct options — India uses both AM (MW/SW) and FM for radio broadcasting.

Radio broadcasting in India uses both amplitude modulation (All India Radio's medium- and short-wave services) and frequency modulation (FM stations), so (A) and (B) are both correct. The Commission therefore awarded the mark to all candidates.

Q119 Whole paperQ121