16. T = Ki is the torque equation of a:
    

1. 1. PMMC instrument
      

   
   
   

   2. Rectifier instrument
      

   
   
   

   3. Moving iron instrument
      

   
   
   

   4. D’ Arsonval instrument

   
   
   

---

1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   NA

---

17. The instrument transformers are normally used to extend the range of:
    

1. 1. Moving iron instruments
      

   
   
   

   2. Electorstatic instruments
      

   
   
   

   3. Induction instruments
      

   
   
   

   4. Can be used with any of the three

   
   
   

---

1. View Hint View Answer Discuss in Forum

   The instrument transformers are normally used to extend the range of induction instruments.
   

   Correct Option: C

   The instrument transformers are normally used to extend the range of induction instruments.
   

---

---

18. The dielectric loss of capacitance can be measured by:
    

1. 1. Hay bridge
      

   
   
   

   2. Schering bridge
      

   
   
   

   3. Maxwell bridge
      

   
   
   

   4. Anderson bridge

   
   
   

---

1. View Hint View Answer Discuss in Forum

   The dielectric loss of capacitance can be measured by schering bridge.

   Correct Option: B

   The dielectric loss of capacitance can be measured by schering bridge.

---

19. The internal resistance of the ammeter should ideally be:
    

1. 1. Zero
      

   
   
   

   2. Very large
      

   
   
   

   3. Very small
      

   
   
   

   4. Infinite

   
   
   

---

1. View Hint View Answer Discuss in Forum

   The internal resistance of the ammeter should ideally be zero.

   Correct Option: A

   The internal resistance of the ammeter should ideally be zero.

---

---

20. The deflection of hot wire instruments depends on:
    

1. 1. Instantaneous value of alternating current
      

   
   
   

   2. Average value of current
      

   
   
   

   3. r.m.s. value of alternating current
      

   
   
   

   4. None of the above

   
   
   

---

1. View Hint View Answer Discuss in Forum

   The deflection of not wire instruments depends on r.m.s. value of alternating current.

   Correct Option: C

   The deflection of not wire instruments depends on r.m.s. value of alternating current.

---