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  9. Q64

SSC CPO (SI in Delhi Police & CAPFs) 2025 · Question 64 of 323

Read the following statements regarding different modulation techniques: 1. In Amplitude Modulation (AM), the bandwidth of the modulated signal is twice the modulating signal frequency. 2. Frequency Modulation (FM) typically consumes less power than AM for the same coverage area. 3. Phase Modulation (PM) is equivalent to Frequency Modulation (FM) when the modulating signal is integrated before applying to the phase modulator. Which of the above statements are correct? विभिन्न मॉडुलन तकनीकों के संबंध में निम्नलिखित कथनों को पढ़ें: 1. आयाम मॉडुलन (AM) में, मॉडुलित सिग्नल की बैंडविड्थ मॉडुलन सिग्नल की आवृत्ति से दोगुनी होती है। 2. आवृत्ति मॉडुलन (FM) समान कवरेज क्षेत्र के लिए AM की तुलना में आमतौर पर कम बिजली की खपत करता है। 3. जब मॉडुलन सिग्नल को चरण मॉडुलक पर लागू करने से पहले एकीकृत किया जाता है, तो चरण मॉडुलन (PM) आवृत्ति मॉडुलन (FM) के समतुल्य होता है। उपरोक्त में से कौन से कथन सही हैं?

  1. A1 only
  2. B2 and 3 onlyCorrect
  3. C1 and 3 only
  4. D1, 2 and 3 1, 2 और 3

Answer: B. 2 and 3 only

Official answer key verified. Detailed explanation coming soon.

Source: SSC CPO 2025 Paper-I (09-Dec-2025 Shift 1) — testbook compilation via allexampyqs.com · reliable-secondary

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