86. Which of the following AM techniques provide the advantages of greater signal power and reduction of bandwidth?
    

1. 1. DSB-SC
      

   
   
   

   2. SSB
      

   
   
   

   3. USB
      

   
   
   

   4. None

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

87. Completely suppressed carrier transmission is—
    

1. 1. cheaper in cost
      

   
   
   

   2. simpler in design
      

   
   
   

   3. never produced commercially
      

   
   
   

   4. None of these
      

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

---

88. Which of the following techniques is acceptable for voice communication?
    

1. 1. DSB-SC
      

   
   
   

   2. SSB
      

   
   
   

   3. Both (A) and (B)
      

   
   
   

   4. None of these

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---

89. 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

---

---

90. 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

---