111. Gate characteristic of a thyristor—

1. 1. is a straight line passing through origin
      

   
   
   

   2. is of the type V_g = a + b I_g

   
   
   

   3. is a curve between V_g and I_g

   
   
   

   4. has a spread between two curves of V_g – I_g.

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

112. In an SCR, anode current flows over a narrow region near the gate during—
     

1. 1. delay time t_d
      
      

   
   
   

   2. rise time t_r and spread time t_p

   
   
   

   3. t_d and t_p

   
   
   

   4. t_d and t_r

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

---

113. Turn-on time for an SCR is 10 μ sec. If an inductance is inserted in the anode circuit, then the turn-on time will be—

1. 1. 10 μ sec

   
   
   

   2. less than 10 μ sec

   
   
   

   3. more than 10 μ sec

   
   
   

   4. about 10 μ sec

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   NA

---

114. Turn-off time of an SCR is measured from the instant—
     

1. 1. anode current becomes zero

   
   
   

   2. anode voltage becomes zero

   
   
   

   3. anode voltage and anode current become zero at the same time

   
   
   

   4. gate current becomes zero

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   NA

---

---

115. For an SCR with turn-on time of 5 microsecond, an ideal trigger pulse should have—
     

1. 1. short rise time with pulse width = 3 μ sec

   
   
   

   2. long rise time with pulse width = 6 μ sec

   
   
   

   3. short rise time with pulse width = 6 μ sec

   
   
   

   4. long rise time with pulse width = 3 μ sec

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

---