Orbit Determination MCQ

Test your knowledge with important Orbit Determination MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Orbit Determination MCQs at Bissoy

• Which of the following statement is incorrect about Julian day?
  ক

  The Julian day count is uniform and continuous and does not involve leap years or different numbers of days in different months

  খ

  The number of days between two events is found by simply subtracting the Julian day of one from that of the other

  গ

  The Julian day begins at noon rather than at midnight so that astronomers observing the heavens at night would not have to deal with a change of date during their watch

  ঘ

  Julian day is more useful for people resident on the Earth
• Julian day number is the number of days since _____
  ক

  December 1, 4713 BC

  খ

  January 1, 2000

  গ

  January 1, 4713 BC

  ঘ

  December 1, 1900
• The system measured by the sun’s passage across the Greenwich meridian is called _____
  ক

  Universal time

  খ

  Apparent Solar time

  গ

  Sidereal time

  ঘ

  Julian day
• Which is not a time system?
  ক

  Julian Day

  খ

  Atomic time

  গ

  Universal time

  ঘ

  Polar time
• Local sidereal time of a site is the time elapsed since the local meridian of the site passed through the vernal equinox.
  ক

  True

  খ

  False
• What is the reference for the Sidereal time?
  ক

  The Sun

  খ

  The centre of the Celestial sphere

  গ

  The Moon

  ঘ

  The Stars
• A solar day comprises of ______
  ক

  12 hours

  খ

  24 hours

  গ

  23 hours 56 mins

  ঘ

  24 hours 4 mins
• Which of the following is a correct statement about time?
  ক

  Time is not a fundamental dimension in science

  খ

  Time can be calculated by the same method throughout the universe

  গ

  The main purpose of time is to define with precession, the exact moment of a phenomenon

  ঘ

  The epoch designates a particular instant described as a day
• What is the time between two successive upper transits of the sun across a local meridian called?
  ক

  Apparent solar day

  খ

  Solar day

  গ

  Sidereal time

  ঘ

  Universal time