221. The advantage of SSB-SC system is that it provides—
     

1. 1. Higher frequency of transmission
      

   
   
   

   2. Better quality of communication
      

   
   
   

   3. Simpler and inexpensive circuitry
      

   
   
   

   4. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

---

222. The SSB modulator is known as—
     

1. 1. Balanced modulator
      

   
   
   

   2. Product modulator
      

   
   
   

   3. Amplitude modulator
      

   
   
   

   4. None of these
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

---

223. In phase-shift SSB modulator, the input signals one of the balanced modulators are phase-shifted by—
     

1. 1. 45°
      

   
   
   

   2. 90°
      

   
   
   

   3. 180º
      

   
   
   

   4. 30°

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

224. The VSB signal is produced form the DSB signal by employing—
     

1. 1. Simpler filters
      

   
   
   

   2. Balanced modulator
      

   
   
   

   3. Ring modulator
      

   
   
   

   4. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

225. The DSB-SC signal is detected by—
     

1. 1. removing the carrier
      

   
   
   

   2. removing one sideband
      

   
   
   

   3. re-injecting the carrier
      

   
   
   

   4. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---