Measurement of Time


Units And Dimensions - Concepts
Class - RRB Technician Grade I Signal Subjects
 
 
Concept Explanation
 

Measurement of Time

Measurement of Time: In the beginning, people used calendars to keep a track of years, which were divided into months and days.

  •  Later, people started keeping track of the time of the day. They started building various instruments to divide the day into smaller parts.
  •  An instrument used to measure time is called a clock.
  •   People used instruments such as sundials and hourglass to keep track of time. The movement of the shadow changed direction with the movement of the sun across the sky, was used to make crude sundials.
  •  An hourglass consisted of two rounded glass bulbs connected by a narrow neck of glass. The top bulb was filled with sand and a measured amount of sand particles streamed down from the top bulb into the bottom bulb, giving the time.
  • Sample Questions
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    Question : 1

    Which of the following should be used to record time most accurately.

    Right Option : B
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    Question : 2

    In the S.I. system of units the unit of length is

    Right Option : A
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    Explanation
    Question : 3

    1 Minute is equal ___________________ seconds.

    Right Option : C
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