Grade 12 - Module 3

10 Questions | Total Attempts: 77

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Grade 12 - Module 3 - Quiz

Questions and Answers
  • 1. 
    A timer is a
    • A. 

      Watch

    • B. 

      Clock

    • C. 

      Special clock

    • D. 

      Non of the above

  • 2. 
    The picture shows a 
    • A. 

      Clock

    • B. 

      Watch

    • C. 

      Mud clock

    • D. 

      Sand clock

  • 3. 
    One of then is not a Timer
    • A. 

      Mechanical Timer

    • B. 

      Electro mechanical timer

    • C. 

      Software timer

    • D. 

      Microprocessors

  • 4. 
    The advantage of mechanical timer is
    • A. 

      Inaccurate

    • B. 

      Less cost

    • C. 

      High cost

    • D. 

      Very small

  • 5. 
    Electro mechnaical timers are used for 
    • A. 

      Flasher

    • B. 

      Christmas decoration

    • C. 

      House lighting

    • D. 

      Both a and b

  • 6. 
    One of the timer is high precsion timer
    • A. 

      Mechanical timer

    • B. 

      Digital timer

    • C. 

      Electro mechanical timer

    • D. 

      Normal timer

  • 7. 
    An ON delay timer is used for
    • A. 

      To ON a Lamp after a time

    • B. 

      To OFF a lamp after a time

    • C. 

      To ON a lamp before the time

    • D. 

      Non of the above

  • 8. 
    The OFF delay timer is used 
    • A. 

      To ON a Lamp after a time

    • B. 

      To OFF a lamp after a time

    • C. 

      To OFF a lamp before the time

    • D. 

      All of the above

  • 9. 
    The symbol shown here is a 
    • A. 

      On Delay timer - N. O

    • B. 

      OFF Delay timer - N. O

    • C. 

      On Delay timer - N. C

    • D. 

      OFF Delay timer - N. C

  • 10. 
    The symbol shown here is 
    • A. 

      ON delay NC

    • B. 

      OFF delay NC

    • C. 

      ON Delay NO

    • D. 

      OFF delay NO

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