Fundamentals Of Protective Relaying

10 Questions

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Fundamentals Of Protective Relaying

SGP Quiz1


Questions and Answers
  • 1. 
    How much % the reliability of the relay manufacturer provides?
    • A. 

      80%

    • B. 

      90%

    • C. 

      95

    • D. 

      100

  • 2. 
    In distance Protection how many electrical parameters relay measures? 
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 3. 
    In induction relays, Torque is produced due to [Blank] between the rotating flux and the eddy current
  • 4. 
    The quantities by which the relay operates
    • A. 

      Current

    • B. 

      Voltage

    • C. 

      Temperature

    • D. 

      Distance

    • E. 

      Speed

  • 5. 
    [Blank]scheme is a scheme that operates for a fault within its zone. The differential protection scheme is the best example of this type of protection scheme.
  • 6. 
    In which relays measured ac quantity are sequentially sampled and converted into numeric form
    • A. 

      Numerical

    • B. 

      Digital

    • C. 

      Static

    • D. 

      Electromagnetic

  • 7. 
    The zones of protection are overlapped
    • A. 

      To protect  all equipment

    • B. 

      To have minimum relays and CB

    • C. 

      To avoid blind spot

    • D. 

      For transmission lines 

  • 8. 
    Attracted armature type relays can be energized either by AC or DC supply.
    • A. 

      True

    • B. 

      False

  • 9. 
    Faults occurring are mostly are
    • A. 

      LL

    • B. 

      LLG

    • C. 

      LG

    • D. 

      LLL

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